Closed lm124757 closed 7 years ago
From some materials, I learned about chromatic aberration which may cause the problem. But I didn't see any code about fixing this issue in Surround360. Does the point gray camera dealing well with this problem?
https://en.wikipedia.org/wiki/Purple_fringing
It's an optical property of the lens. Best you can do is take it to an external program like Davinci Resolve, chromakey the purple color and de-saturate it.
Did anyone meet the following issue? raw_data.zip note: Since github doesn't support tiff, so I put the raw image into zip file.
I captured the picture with my own camera, and ran the Raw2Rgb from Surround360 isp module. But there exist some purple around the lamps in ceiling. For a more accurate describing for pixel color ,I run the program with bilinear demosaicing. And the camera isp setting args are listed as follow. "CameraIsp" : { "serial" : 0, "name" : "my camera", "bitsPerPixel" : 12, "width" : 1952, "height" : 1218, "compandingLut" : [[0.0, 0.0, 0.0], [0.5, 0.5, 0.5], [1.0, 1.0, 0.0]], "blackLevel" : [5.0, 5.0, 5.0], "vignetteRollOff" : [[1.0, 1.0, 1.0], [1.0, 1.0, 1.0], [1.0, 1.0, 1.0], [1.0, 1.0, 1.0]], "whiteBalanceGain" : [1.4509, 1, 1.6244], "stuckPixelThreshold" : 5, "stuckPixelDarknessThreshold" : 0.11, "stuckPixelRadius" : 0, "denoise" : 0.6, "denoiseRadius" : 2, "ccm" : [[1.780370, -0.523295, -0.258075], [-0.706706, 1.994845, -0.288210], [-0.013212, -0.600956, 1.581960]], "sharpenning" : [0, 0, 0], "saturation" : 1.1, "contrast" : 1.0, "lowKeyBoost" : [-0.2, -0.2, -0.2], "highKeyBoost" : [0.2, 0.2, 0.2], "gamma" : [0.4545, 0.4545, 0.4545], "bayerPattern" : "RGGB" }
I had changed the blackLevel, whiteBalanceGain and other args in different values, but the purple couldn't be removed anyway. Does anyone know about the reason? Thanks.