How can I use the BCGTransform function to treat the 16-bit Image?
Hi ~
I use LabWindowsCVI8.5 and NI Vision to make the treatment of the Image. When I read the "IMAQ Vision for LabWindowsCVI Reference Manual", I found that the imaqBCGTransform function only supports 8-bit Image, while I do the BCG to turn on 16-bit image. Are there solutions to use the BCGTransform function to deal with the 16-bit Image? Or any other feature that could make the correction Gamma, contrast and brightness on the 16-bit Image?
Thank you very much!
because imaqBCGTransform is implemented as a lookup table, we can understand why it is limited to 8-bit images.
Now let's take a look at the definition of each of this mandate (from the NI Vision Concepts documentation):
-brightness: a constant added to the components red, green, and blue pixel of color over color, decoding of the process;
-contrast: a constant multiplication factor applied to the components of the luma and chroma of a pixel of color in color to decoding process.
-gamma correction: expand high gray-level information in an image while removing information of low level of gray. (the chapter on lookup tables gives some examples of corrections gamma)
now that you understand that this transformation is a simple mathematical function, simply calculate the correction for each pixel on your 16-bit images.
I know not the exact formula used by the imaqBCGTransform function, but you should be able to approach by performing some tests on images 8 bits with the original function... or you can make your own formula... or find one on the net... or you can ask someone at home OR you give the formula...
Tags: NI Software
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