Fixed pattern noise can be measured in the absence of illumination.
How to prove the absence of illumination in an image?
Dear Anitha Thomas,
Look the link, maybe useful.
https://www.researchgate.net/post/By_image_processing_how_can_i_detect_the_brightness_or_the_light_intensity_of_the_camera_frames
https://www.researchgate.net/post/How_do_I_calculate_Luminance_of_an_Image_in_Lux_measure_in_MATLAB
https://www.cs.sfu.ca/~mark/ftp/Iccv07/iccv07.pdf
Regards,
Shafagat
Thank you shafagat.
look for the light in the darkness
you can use the . i test it, and find it is very good.
I would try a histogram.
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