Hot Pixels with CMOS? at DVinfo.net

Robert Petersen · July 10th, 2007, 03:47 PM

I've searched everywhere with no avail. Does anyone know if CMOS chips can suffer from "hot pixels" or "stuck pixels" like CCD's? If so, are there pixel masking techniques for them?

John Bosco Jr. · July 15th, 2007, 11:04 PM

I don't know too much on the subject, but, yes, CMOS chips like CCDs can suffer from hot pixels and dead pixels for that matter. Some CMOS chips have a correction method in which the closest neighbor to the bad pixel in a way replaces it. I don't know the technique, but I've had heard of it.

I know in some digital still cameras they have what is called a DFS, dark-frame subtraction, which a dark frame is added to mask the hot pixels.

Robert Petersen · July 16th, 2007, 10:10 AM

Thanks for the information!

July 10th, 2007, 03:47 PM	#1
Robert Petersen Regular Crew Join Date: May 2006 Location: Girard, Ohio Posts: 103	Hot Pixels with CMOS? I've searched everywhere with no avail. Does anyone know if CMOS chips can suffer from "hot pixels" or "stuck pixels" like CCD's? If so, are there pixel masking techniques for them?

July 15th, 2007, 11:04 PM	#2
John Bosco Jr. Major Player Join Date: Jan 2007 Location: Pinellas Park Posts: 232	I don't know too much on the subject, but, yes, CMOS chips like CCDs can suffer from hot pixels and dead pixels for that matter. Some CMOS chips have a correction method in which the closest neighbor to the bad pixel in a way replaces it. I don't know the technique, but I've had heard of it. I know in some digital still cameras they have what is called a DFS, dark-frame subtraction, which a dark frame is added to mask the hot pixels.

July 16th, 2007, 10:10 AM	#3
Robert Petersen Regular Crew Join Date: May 2006 Location: Girard, Ohio Posts: 103	Thanks for the information!