How can i decompress colored depth that compressed by realsense-ros package
Hi, I want to get the depth frame using L515 with Realsense-ROS ( ROS1 ).
So i saved depth frame using 'colorizer' filters. ( Just depth/distance frame data size was so big to communicate my system, so i had to use colorize compression. )
And i need distance, so i tried to decompress referring Cororization Compression Post ( https://dev.intelrealsense.com/docs/depth-image-compression-by-colorization-for-intel-realsense-depth-cameras )
But i think colorized depth frame's data information is relative distance ( from minimum to maximum at that frame ), not absolute distance.
I attatch the example what i want to explain.
Distance in circle : 6.7m
Distance in circle : 8.8m
But the real distance of that circle is about 1.2m.
So, My question is How can i get the absolute distance from colored depth frame?
Thank you for contacting us.
The depth image compression by colorization white-paper document was a proof-of-concept experiment published some years ago and whilst it is possible to implement the compression, it is now recommended that it not be used and alternative depth compression methods be used instead, such as LZ4, as discussed at #8117
Whilst it is recommended that the paper's compression method not be used, RealSense users are of course able to try it if they wish to do so,
If your preference is to continue with depth compression by colorization then there are limited references available for debugging problems with it unfortunately due to the experimental nature of the paper and the small number of RealSense users who attempted to use it. The best available reference is at the link below.
Intel Customer Support
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