/r/PerseveranceRover
On the plains of Jezero, the secrets of Mars' past await us! Follow for the latest news, updates, pretty pics, and community discussion on NASA and the Jet Propulsion Laboratory's most ambitious mission to Mars!
On the plains of Jezero, the secrets of Mars' past await us! Follow for the latest news, updates, pretty pics, and community discussion on NASA and the Jet Propulsion Laboratory's most ambitious mission to Mars!
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/r/PerseveranceRover
Hi all, thanks in advance for any feedback!
I have been working to take the raw .PNGs from the Perseverance descent and landing sequence, colorizing them and exporting the full videos. These are *single* black & white PNGs that use a bayer pattern to record full color info. NASA did release this video that has already compiled these images into video, but the videos are not full screen, there seems to be some file conversion digital compression, and there is some keyframe motion of the videos at one point that make it kind of hard to use in it's entirety. I was hoping to pull together the original images and re-export as a single-channel, fullscreen video with the best quality as possible.
I found this helpful article here (https://mixinglight.com/color-grading-tutorials/processing-mars-rover-images-davinci-resolve/) that provides a simple filter to pull out the color in these images. Follow the link and scroll to the bottom for the instructional video. The filter is a DaVinci Resolve Color Transform Language (DCTL) to interpret these B&W images available on NASA's Perseverance Image Archive and convert them to full color within DaVinci Resolve. However, I don't think the DCTL 100% works, as there is some really significant artifacting in the final images that looks to me like it is related to not quite the correct math behind this DCTL color transformation. Near the end of the video linked above, the DCTL's creator acknowledged that it lacks some of the smoothing and image processing details, leading to the significant pixelation seen here when zoomed into the final, processed image:
Overall, my images look stronger when zoomed out... but when blown-up on a large screen you can really notice the pixelated bayer effect. When compared to the NASA Footage of these events, I simply don't see this kind of pronounced pixelated effect that I believe is associated with a misinterpretation of the original RGB bayer pattern. I am guessing that the debayer DCTL offered online here (MARSDEBAYER_mrk3 is what I used in DaVinci to produce my results) is just not as advanced as whatever NASA is using to help sharpen and improve the overall quality of the image. Maybe?
Does anyone out there know more than me? Essentially, I am just looking for the best possible quality version of all of the various cameras from the descent and landing, in full color.