• Temporal Disparity

    From Francois LE COAT@21:1/5 to All on Thu Jan 14 18:15:40 2021
    Hi,

    I recently found that you can compute a "temporal disparity" from two successive images. With an image sequence, performing the perspective registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

    <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    Happy New Year 2021.

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Fri Jan 22 20:00:02 2021
    Hi,

    Francois LE COAT writes:
    I recently found that you can compute a "temporal disparity" from two successive images. With an image sequence, performing the perspective registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

        <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    In this demonstration I used the Farneback optical-flow method, to
    perform the perspective registration of the sequence. That is giving
    a good approximation of the "temporal disparity" in u and v, meaning horizontally and vertically.

    To perform a better approximation of the "temporal disparity", I also
    used the OpenCV DualTVL1 optical-flow method, in replacement of
    Farneback method. The result is far better, but it computes slowly...

    <https://www.youtube.com/watch?v=jJ97h4KZOb8>

    Farneback method is computed in approximately 6 hours for 2500 images
    of the drone sequence. While DualTVL1 is computing in about 32 hours
    for 2500 images. This is a long computation on the Macintosh, without
    GPU, for a 2 minutes 30img/sec video sequence.

    You may better appreciate what is meaning "temporal disparity" for now.

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Tue Feb 2 18:22:11 2021
    Hi,

    Francois LE COAT writes:
    I recently found that you can compute a "temporal disparity" from two successive images. With an image sequence, performing the perspective registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

        <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    To explain what I'm doing I've done a WEB page that is not yet finished:

    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Thu Feb 18 17:30:12 2021
    Hi,

    Francois LE COAT writes:
    I recently found that you can compute a "temporal disparity" from two
    successive images. With an image sequence, performing the perspective
    registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

         <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    To explain what I'm doing I've done a WEB page that is not yet finished:

    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>

    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Tue Mar 16 17:00:01 2021
    Hi,

    Francois LE COAT writes:
    I recently found that you can compute a "temporal disparity" from two
    successive images. With an image sequence, performing the perspective
    registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

         <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    To explain what I'm doing I've done a WEB page that is not yet finished:

    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>

    I recently worked a little further on the trajectory of the drone ...

    <https://www.youtube.com/watch?v=3PdUvGDCbQc>

    Instead of using uniquely Ry (yaw) and Tz (translation), I also used
    Tx (translation) and Rz (roll) to reconstruct the trajectory. I couldn't
    use Ty (translation) and Rx (pitch) because it is not looking like a
    valid camera displacement. I have no real explanation.

    But the aspect of the drone's trajectory is looking better ...

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Wed Apr 21 15:15:07 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ?

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Thu Apr 22 18:15:35 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ?

    NASA and Jet Propulsion Lab are showing static video like this one ...

    <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into Ingenuity helicopter ? This looks like surveillance video, but we need
    to see the cinematic from the flight. The camera should be moving =)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Mon Apr 26 16:35:12 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking about >>> to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ?

    NASA and Jet Propulsion Lab are showing static video like this one ...

        <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into Ingenuity helicopter ? This looks like surveillance video, but we need
    to see the cinematic from the flight. The camera should be moving =)

    This is better. We can now see static pictures from Ingenuity's camera:

    <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique!

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Wed May 5 15:15:04 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking
    about
    to apply the same computations with the flight of Ingenuity on Mars... >>>>
    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video
    sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ?

    NASA and Jet Propulsion Lab are showing static video like this one ...

         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into
    Ingenuity helicopter ? This looks like surveillance video, but we need
    to see the cinematic from the flight. The camera should be moving =)

    This is better. We can now see static pictures from Ingenuity's camera:

        <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique!

    Here you can see Ingenuity on Mars in 3D before its first flight...

    <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). There's a lot of FPV videos on Earth, but viewed from Mars none at all !
    That would be a dataset everyone would like for image processing =)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Sat May 15 19:19:17 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking
    about
    to apply the same computations with the flight of Ingenuity on Mars... >>>>>
    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video
    sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ?

    NASA and Jet Propulsion Lab are showing static video like this one ...

         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into >>> Ingenuity helicopter ? This looks like surveillance video, but we need
    to see the cinematic from the flight. The camera should be moving =)

    This is better. We can now see static pictures from Ingenuity's camera:

         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique!

    Here you can see Ingenuity on Mars in 3D before its first flight...

        <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). There's a lot of FPV videos on Earth, but viewed from Mars none at all !
    That would be a dataset everyone would like for image processing =)

    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is
    not accompanied with an helicopter like the NASA "Ingenuity" is. But
    that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos
    from those. All the videos are produced with the "Perseverance" cameras.

    So Americans are not better than Chinese, because we can't view anything
    from the flying helicopter's cameras. This is really such a shame. The
    vision community is thankless to the NASA and its lack of shared videos.

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Thu May 20 17:30:05 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is
    applied to a drone flying in Vosges a few days ago. I was thinking >>>>>> about
    to apply the same computations with the flight of Ingenuity on
    Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video
    sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ? >>>>
    NASA and Jet Propulsion Lab are showing static video like this one ... >>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded
    into
    Ingenuity helicopter ? This looks like surveillance video, but we need >>>> to see the cinematic from the flight. The camera should be moving =)

    This is better. We can now see static pictures from Ingenuity's camera:

         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique!

    Here you can see Ingenuity on Mars in 3D before its first flight...

         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV).
    There's a lot of FPV videos on Earth, but viewed from Mars none at all !
    That would be a dataset everyone would like for image processing =)

    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is
    not accompanied with an helicopter like the NASA "Ingenuity" is. But
    that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos
    from those. All the videos are produced with the "Perseverance" cameras.

    So Americans are not better than Chinese, because we can't view anything
    from the flying helicopter's cameras. This is really such a shame. The
    vision community is thankless to the NASA and its lack of shared videos.

    For its sixth flight, the "Ingenuity" helicopter will not be filmed by
    the "Perseverance" rover, said the NASA today. Does it means that we
    will be able to see videos from the cameras embedded on the helicopter?
    That would be a huge step forward, in the history of flights on Mars =)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Fri May 28 15:16:48 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>



    I've completed the WEB page I mentioned. This image processing is >>>>>>> applied to a drone flying in Vosges a few days ago. I was
    thinking about
    to apply the same computations with the flight of Ingenuity on
    Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video
    sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos ? Does the
    cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect ? >>>>>
    NASA and Jet Propulsion Lab are showing static video like this one ... >>>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded >>>>> into
    Ingenuity helicopter ? This looks like surveillance video, but we need >>>>> to see the cinematic from the flight. The camera should be moving =)

    This is better. We can now see static pictures from Ingenuity's camera: >>>>
         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique! >>>
    Here you can see Ingenuity on Mars in 3D before its first flight...

         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). >>> There's a lot of FPV videos on Earth, but viewed from Mars none at all ! >>> That would be a dataset everyone would like for image processing =)

    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is
    not accompanied with an helicopter like the NASA "Ingenuity" is. But
    that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos
    from those. All the videos are produced with the "Perseverance" cameras.

    So Americans are not better than Chinese, because we can't view anything
    from the flying helicopter's cameras. This is really such a shame. The
    vision community is thankless to the NASA and its lack of shared videos.

    For its sixth flight, the "Ingenuity" helicopter will not be filmed by
    the "Perseverance" rover, said the NASA today. Does it means that we
    will be able to see videos from the cameras embedded on the helicopter?
    That would be a huge step forward, in the history of flights on Mars =)

    There was an incident during the sixth flight of Ingenuity on Mars...

    <https://www.youtube.com/watch?v=pKUAsuXF6EA>

    Let's hope there will have a color video for the seventh flight =)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Sun Jun 27 12:00:01 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>

    I've completed the WEB page I mentioned. This image processing is >>>>>>>> applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars... >>>>>>>>
    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the
    viewpoint of Perseverance, from a distance about of 100 meters.
    But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos? Does the >>>>>>> cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect? >>>>>>
    NASA and Jet Propulsion Lab are showing static video like this one... >>>>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into >>>>>> Ingenuity helicopter? This looks like surveillance video, but we need >>>>>> to see the cinematic from the flight. The camera should be moving =) >>>>>
    This is better. We can now see static pictures from Ingenuity's camera: >>>>>
         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique! >>>>
    Here you can see Ingenuity on Mars in 3D before its first flight...

         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). >>>> There's a lot of FPV videos on Earth, but viewed from Mars none at all! >>>> That would be a dataset everyone would like for image processing =)

    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is
    not accompanied with an helicopter like the NASA "Ingenuity" is. But
    that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos
    from those. All the videos are produced with the "Perseverance" cameras. >>>
    So Americans are not better than Chinese, because we can't view anything >>> from the flying helicopter's cameras. This is really such a shame. The
    vision community is thankless to the NASA and its lack of shared videos.

    For its sixth flight, the "Ingenuity" helicopter will not be filmed by
    the "Perseverance" rover, said the NASA today. Does it means that we
    will be able to see videos from the cameras embedded on the helicopter?
    That would be a huge step forward, in the history of flights on Mars =)

    There was an incident during the sixth flight of Ingenuity on Mars...

        <https://www.youtube.com/watch?v=pKUAsuXF6EA>

    Let's hope there will have a color video for the seventh flight =)

    If you read the comment from the NASA about the 8th flight of Ingenuity:

    <https://mars.nasa.gov/technology/helicopter/status/308>

    you understand that there was no color camera acquisition for the 7th
    and the 8th flight on Mars. This was due to the incident on the 6th
    flight, and a conflict between acquisition of the two embedded cameras.
    Let's hope for subsequent flights of the helicopter, that NASA has fixed
    the horodating problem. Let's hope we will have a color video from Mars.

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Sat Jul 31 17:05:12 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is >>>>>>>>> applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the >>>>>>>> viewpoint of Perseverance, from a distance about of 100 meters. >>>>>>>> But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos? Does the >>>>>>>> cameras attached to the device are filming, or taking static
    pictures only ? Are we going to see Ingenuity from a dynamic aspect? >>>>>>>
    NASA and Jet Propulsion Lab are showing static video like this one... >>>>>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into
    Ingenuity helicopter? This looks like surveillance video, but we need >>>>>>> to see the cinematic from the flight. The camera should be moving =) >>>>>>
    This is better. We can now see static pictures from Ingenuity's camera: >>>>>>
         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique! >>>>>
    Here you can see Ingenuity on Mars in 3D before its first flight...

         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). >>>>> There's a lot of FPV videos on Earth, but viewed from Mars none at all! >>>>> That would be a dataset everyone would like for image processing =)

    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is
    not accompanied with an helicopter like the NASA "Ingenuity" is. But
    that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos >>>> from those. All the videos are produced with the "Perseverance" cameras. >>>>
    So Americans are not better than Chinese, because we can't view anything >>>> from the flying helicopter's cameras. This is really such a shame. The >>>> vision community is thankless to the NASA and its lack of shared videos. >>>
    For its sixth flight, the "Ingenuity" helicopter will not be filmed by
    the "Perseverance" rover, said the NASA today. Does it means that we
    will be able to see videos from the cameras embedded on the helicopter?
    That would be a huge step forward, in the history of flights on Mars =)

    There was an incident during the sixth flight of Ingenuity on Mars...

         <https://www.youtube.com/watch?v=pKUAsuXF6EA>

    Let's hope there will have a color video for the seventh flight =)

    If you read the comment from the NASA about the 8th flight of Ingenuity:

    <https://mars.nasa.gov/technology/helicopter/status/308>

    you understand that there was no color camera acquisition for the 7th
    and the 8th flight on Mars. This was due to the incident on the 6th
    flight, and a conflict between acquisition of the two embedded cameras.
    Let's hope for subsequent flights of the helicopter, that NASA has fixed
    the horodating problem. Let's hope we will have a color video from Mars.

    For 10th flight over Mars, Ingenuity followed an elaborate trajectory...

    <https://www.youtube.com/watch?v=QiF9VJJamkE>

    NASA planned to take color pictures of remarkable points on ground.
    Since 9th flight, there was grey level sequences from navigation
    camera, and color pictures from a few sites. This is interesting!

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Sun Aug 15 17:00:55 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>


    I've completed the WEB page I mentioned. This image processing is >>>>>>>>>> applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>

    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the >>>>>>>>> viewpoint of Perseverance, from a distance about of 100 meters. >>>>>>>>> But I haven't seen videos from both cameras embedded on the
    helicopter Ingenuity itself. Will there be such videos? Does the >>>>>>>>> cameras attached to the device are filming, or taking static >>>>>>>>> pictures only ? Are we going to see Ingenuity from a dynamic aspect? >>>>>>>>
    NASA and Jet Propulsion Lab are showing static video like this one... >>>>>>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into
    Ingenuity helicopter? This looks like surveillance video, but we need >>>>>>>> to see the cinematic from the flight. The camera should be moving =) >>>>>>>
    This is better. We can now see static pictures from Ingenuity's camera: >>>>>>>
         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique! >>>>>>
    Here you can see Ingenuity on Mars in 3D before its first flight... >>>>>>
         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV). >>>>>> There's a lot of FPV videos on Earth, but viewed from Mars none at all! >>>>>> That would be a dataset everyone would like for image processing =) >>>>>
    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is >>>>> not accompanied with an helicopter like the NASA "Ingenuity" is. But >>>>> that is not a problem, because NASA is not sharing videos from its
    flying robot. There's two cameras on "Ingenuity" but we have no videos >>>>> from those. All the videos are produced with the "Perseverance" cameras. >>>>>
    So Americans are not better than Chinese, because we can't view anything >>>>> from the flying helicopter's cameras. This is really such a shame. The >>>>> vision community is thankless to the NASA and its lack of shared videos. >>>>
    For its sixth flight, the "Ingenuity" helicopter will not be filmed by >>>> the "Perseverance" rover, said the NASA today. Does it means that we
    will be able to see videos from the cameras embedded on the helicopter? >>>> That would be a huge step forward, in the history of flights on Mars =) >>>
    There was an incident during the sixth flight of Ingenuity on Mars...

         <https://www.youtube.com/watch?v=pKUAsuXF6EA>

    Let's hope there will have a color video for the seventh flight =)

    If you read the comment from the NASA about the 8th flight of Ingenuity:

    <https://mars.nasa.gov/technology/helicopter/status/308>

    you understand that there was no color camera acquisition for the 7th
    and the 8th flight on Mars. This was due to the incident on the 6th
    flight, and a conflict between acquisition of the two embedded cameras.
    Let's hope for subsequent flights of the helicopter, that NASA has fixed
    the horodating problem. Let's hope we will have a color video from Mars.

    For 10th flight over Mars, Ingenuity followed an elaborate trajectory...

        <https://www.youtube.com/watch?v=QiF9VJJamkE>

    NASA planned to take color pictures of remarkable points on ground.
    Since 9th flight, there was grey level sequences from navigation
    camera, and color pictures from a few sites. This is interesting!

    I've been concerned by 11th flight over planet Mars yesterday August
    14th, after Ingenuity helicopter happened August 4th...

    <https://www.youtube.com/watch?v=50fccs79W1A>

    RAW separated images were released by the NASA at the location:

    <https://mars.nasa.gov/mars2020/multimedia/raw-images/?af=HELI_NAV,HELI_RTE#raw-images>

    Then Aurélien Genin put online a MPEG 4 video at the location:

    <https://twitter.com/RevesdEspace/status/1426147951693402114>

    August 13th. I worked on this video. It takes a delay between the
    day of the flight, and final result here. But this video comes
    from a very distant location in space!

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Fri Nov 5 18:45:08 2021
    Hi,

    Francois LE COAT writes:
    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/temporal_disparity.html>

    I've completed the WEB page I mentioned. This image processing is >>>>>>>>>>> applied to a drone flying in Vosges a few days ago. I was thinking about
    to apply the same computations with the flight of Ingenuity on Mars...

    <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity> >>>>>>>>>>>
    The autonomous drone is landing today, and we'll have video sequences =)

    There's a lot of videos showing Ingenuity flying, seen from the >>>>>>>>>> viewpoint of Perseverance, from a distance about of 100 meters. >>>>>>>>>> But I haven't seen videos from both cameras embedded on the >>>>>>>>>> helicopter Ingenuity itself. Will there be such videos? Does the >>>>>>>>>> cameras attached to the device are filming, or taking static >>>>>>>>>> pictures only ? Are we going to see Ingenuity from a dynamic >>>>>>>>>> aspect?

    NASA and Jet Propulsion Lab are showing static video like this one... >>>>>>>>>
         <https://mars.nasa.gov/embed/25838/>

    Are we going to see dynamic video, taken from both cameras embedded into
    Ingenuity helicopter? This looks like surveillance video, but we need >>>>>>>>> to see the cinematic from the flight. The camera should be moving =) >>>>>>>>
    This is better. We can now see static pictures from Ingenuity's camera:

         <https://mars.nasa.gov/embed/25846/>

    Are we going to see a real film, from the camera? This would be unique!

    Here you can see Ingenuity on Mars in 3D before its first flight... >>>>>>>
         <https://www.youtube.com/watch?v=YdKjHs9wJRM>

    That would be unique if we can see Ingenuity in First Person View (FPV).
    There's a lot of FPV videos on Earth, but viewed from Mars none at all! >>>>>>> That would be a dataset everyone would like for image processing =) >>>>>>
    Chinese rover "Zhuhong" landed a few hours ago on Mars. This robot is >>>>>> not accompanied with an helicopter like the NASA "Ingenuity" is. But >>>>>> that is not a problem, because NASA is not sharing videos from its >>>>>> flying robot. There's two cameras on "Ingenuity" but we have no videos >>>>>> from those. All the videos are produced with the "Perseverance" cameras. >>>>>>
    So Americans are not better than Chinese, because we can't view anything >>>>>> from the flying helicopter's cameras. This is really such a shame. The >>>>>> vision community is thankless to the NASA and its lack of shared videos. >>>>>
    For its sixth flight, the "Ingenuity" helicopter will not be filmed by >>>>> the "Perseverance" rover, said the NASA today. Does it means that we >>>>> will be able to see videos from the cameras embedded on the helicopter? >>>>> That would be a huge step forward, in the history of flights on Mars =) >>>>
    There was an incident during the sixth flight of Ingenuity on Mars...

         <https://www.youtube.com/watch?v=pKUAsuXF6EA>

    Let's hope there will have a color video for the seventh flight =)

    If you read the comment from the NASA about the 8th flight of Ingenuity: >>>
    <https://mars.nasa.gov/technology/helicopter/status/308>

    you understand that there was no color camera acquisition for the 7th
    and the 8th flight on Mars. This was due to the incident on the 6th
    flight, and a conflict between acquisition of the two embedded cameras.
    Let's hope for subsequent flights of the helicopter, that NASA has fixed >>> the horodating problem. Let's hope we will have a color video from Mars.

    For 10th flight over Mars, Ingenuity followed an elaborate trajectory...

         <https://www.youtube.com/watch?v=QiF9VJJamkE>

    NASA planned to take color pictures of remarkable points on ground.
    Since 9th flight, there was grey level sequences from navigation
    camera, and color pictures from a few sites. This is interesting!

    I've been concerned by 11th flight over planet Mars yesterday August
    14th, after Ingenuity helicopter happened August 4th...

        <https://www.youtube.com/watch?v=50fccs79W1A>

    RAW separated images were released by the NASA at the location:

    <https://mars.nasa.gov/mars2020/multimedia/raw-images/?af=HELI_NAV,HELI_RTE#raw-images>

    Then Aurélien Genin put online a MPEG 4 video at the location:

    <https://twitter.com/RevesdEspace/status/1426147951693402114>

    August 13th. I worked on this video. It takes a delay between the
    day of the flight, and final result here. But this video comes
    from a very distant location in space!

    Aurélien Genin shared rectified images of the 14th flight of Ingenuity:

    <https://twitter.com/Astro_Aure/status/1455284564499341319>

    This is interesting because the cadence is higher with 7 images/s. So reconstructed 3D localization of the helicopter is now more precise...

    <https://www.youtube.com/watch?v=OkclJd3Fmv0>

    Ingenuity flew Oct. 24th and the mission is not yet fully accomplished!

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Francois LE COAT@21:1/5 to Francois LE COAT on Mon Jan 15 19:50:37 2024
    Hi,
    Happy New Year 2024 :-)

    Francois LE COAT writes:
    I recently found that you can compute a "temporal disparity" from two successive images. With an image sequence, performing the perspective registration of the sequence, you can obtain a disparity measure. That
    means depth with only one camera, though disparity is usually measured
    by binocular vision. This appears in the following demonstration...

        <https://www.youtube.com/watch?v=nvfHlw3gHS0>

    A drone is flying between a forest of trees in the French Vosges. Thanks
    to the optical-flow measured on successive images, the "temporal
    disparity" reveals the forest of trees... You take a reference image,
    and the optical-flow is obtained on two rectified images, then the
    reference is changed when inter-correlation drops below 60%. You can
    perceive the relief in depth with a unique camera, over time.

    Happy New Year 2021.

    A WEB page was made to illustrate the "Temporal Disparity" experiment...

    When we want to determine the movement, there are two simplifying
    hypotheses. Either the camera is fixed, and the observed scene is
    moving. Or the camera moves, and the scene is static. In the general
    case, the camera and the scene are moving, and it is necessary to
    segment static and dynamic elements of what is observed. In this case
    the camera is fixed, and it observes the person who is located in front
    of the computer and moving. The goal of the experiment is to reconstruct
    the visible relief, by "monocular depth"...

    <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/profondeur.html>

    That is to say we obtain the depth (inversely proportional to the
    disparity) by measuring the optical-flow, with a single camera, tough
    this measurement is classically made by binocular vision (for disparity)

    Regards,

    --
    Dr. François LE COAT
    CNRS - Paris - France
    <https://hebergement.universite-paris-saclay.fr/lecoat>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)