8 bpp indexed RGB to 24bpp RGB image

[coolshashi]

Hello

I have an image thats 8 bits per pixel, that also has a palette that 256 colors. ( RGB[256] )

Is there an ipp function that gives me a 24bpp image replcing each ot the 8bpp data with color it indexes into?

Shashi

[Thomas_Jensen1]

I have been using iplConvertFromDIBSep from 7.0.6.060\ipp-samples\image-processing\ipl-ipp to load complex DIB/BMPs. It handles 8bit palletized RGB BMP files.

I see that the latest IPP samples BMP decoder does not handle palettes at all.

[Sergey_K_Intel]

Hi Shashi,

It looks like you need to use ippiLUT_8u_C1R function to substitute pixel colors with RGB values and then use ippiDup_8u_C1C3R function to produce 24-bit image from 8-bit, i.e. 3 channels from 1 channel. It also looks like pLevels 256-byte array can be just your RGB table.

Regards,
Sergey