BCG for 16 bit image

[GaelC]

I need to increase the brightness on a .TIFF image which is in 16bit unsigned. I only have available a BCG for 8bit, and we don't want to use the operators since we want to control the amount of brightness added to the image.

Has anyone got a solution? I saw a post from 2009 with a custom made 16 bit version of the BCG but it didnt work for me.

All suggestions are appreciated.

Thank you.

[GaelC]

I would also like to add that:

-We don't want to lose any data, so we don't want to convert to 8bits.

-We're capturing the images in real time through a CCD camera, so it's actually a stream of images (or camera feed) displayed in the UI that we want to increase/decrease the brightness of.

[GerdW]

Hi Gael,

can you explain the term "BCG"?

When I ask Google it only gives me links to a company (Boston Consulting Group) with just one link in between to Wikipedia explaining "Bacillus Calmette-Guérin"…

[Thoric]

BCG = Brightness Contrast Gamma correction

To change the brightness you are simply multiplying a numerical constant to the image data. Therefore, take your image data as an array of 2D values, use the Multiply primitive to scale by a constant value (try 1.1 for starters), and take this array as your brightened image.