Bayer filter applied on IR image from D455
Hello All,
D455 (at firmware: 05.13.00.50) image below is from the IR sensors (configured at 1280x800 resolution and IR images are at Y16 format).
As you see the image below has the bayer filter applied on it. But I don't see this pattern when configured at y8 format. Also this issue was not observed on D415 model (when viewing IR images at y16 format).
Any thoughts?.
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Hi Karthikeyan Yuvraj The link below advises that the D415 camera model has a Bayer pattern filter.
https://github.com/IntelRealSense/librealsense/issues/1070#issuecomment-366405803
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Sorry, I dont understand your reply.
Please let me know on:
1 . why are we getting the bayer pattern on D455 model?
2. Or why is it more visible on D455 compared to D435 and D415?
3. Can I still get clear IR images without the bayer pattern on y16 format IR image from D455?
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Different RealSense camera (D415, D435, D455) use different models of sensor for their left and right infrared imagers.
D415: OV2740
D435: OV9282
D455: OV9782
The link below explains that if 1920x1080 resolution is used with Y16 then the image will be a raw stream without debayering
https://github.com/IntelRealSense/librealsense/issues/1526#issuecomment-399440340
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Thanks MartyX Grover.
We are trying to do calibration on raw images from the D455 camera and then upload the results to the camera itself.
The max resolution for D455 is at 1280x800 (and it does not support 1920x1080).
So at 1280x800 (because 1920x1080 is not supported on D455) and used with Y16, only gives the bayered images. And we can not do the calibration using the bayered images.
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I researched your situation carefully. If you cannot access debayered Y16 images with the D455 camera model then a solution may be to use OpenCV to debayer the images (also referred to as demosaicing in OpenCV).
https://docs.opencv.org/3.4/db/d8c/group__cudaimgproc__color.html#ga7fb153572b573ebd2d7610fcbe64166e
https://stackoverflow.com/questions/63787099/demosaicing-with-opencv
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