View Full Version : Gain problem using .NET in Labview

August 20, 2013, 16:57:05

I have a problem with camera(DMK 23F274) when extracting the 12 bits data from the Y16 when I am changing the the gain. I seem to be not monotonic. For a gain(G) of 146(min) @ 0.01 exp, I obtain a total noise floor of 22772, while increasing to G=200, I have a noise floor of 12353, the to G =300, Noise= 4656. and for G=1000, Noise = 5734.

While when I use the 8bit format, the gain and the noise seems to be monotonic.

Anyone encounter this before?

Thank you.

Stefan Geissler
August 26, 2013, 16:33:49
Please keep in mind: If you use 12 bit, then then last 8 bits are nearly the same bits used in Y800. In 12 bits for more bits are added, so the lowest bit of y800 is now the fourth bit in 12 bit. Therefore, the noise seems to be so high.

November 8, 2013, 10:49:27
Hi Boonping,

I recently bought the DMK 23G274 camera and am starting to program it using Labview. Your questions and Stefan's answers here are already useful to me. Would you agree to exchanging a direct contact? I promise not to abuse it. My e-mail: mazur@hawk.iit.edu