Reply To: Data calibration workflow and processing in APP

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#12906
Haverkamp
Participant

About the BPM (Bad Pixel Map):

Gray pixels mean linear pixels

black pixels are cold pixel

white pixel are hot pixels.

We see a lot of pixels that seem to behave non-linear and can be considered a bit hot. But maybe we are seeing to many and our hot kappa value was too low.

We also see some cold pixels, these are pixels of the raw borders of the sensor. Which you normallys don’t see, but we see them now, since the bad pixel map is a map of the entire sensor.

The BPM image dimensions are different than the image dimensions of the lights. This is due to the fact that the lights of RAW images are always cropped to remove these RAW borders. Check the dimension column in the file list.

You’ll see that the dimensions of the BPM are : 5568×3708

Normal light frames are: 5472×3648

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