mergeLCH

mergeLCH ( integer Light, integer Chroma, integer Hue, integer Output )

Use this function to merge the Lightness, Chroma and Hue components of a color image into an RGB image according to the LCH color model. If at least one of the component images is of the high-bit depth, the components will merge into a 48-bit RGB image, otherwise a 24-bit RGB image will be created.

Parameters

Light, Chroma, Hue

Integers between 0 and 116 specifying the frame numbers of the Lightness, Chroma and Hue component images respectively. A value of 0 represents the DMA memory buffer of the video device. Values in the range of 100-116 correspond to hidden frames.

Output

An integer between 1 and 116 specifying the frame number of the output RGB image. Values in the range of 100-116 correspond to hidden frames.

Error flags

ERR_OK

The flag set if successful.

ERR_FAILED

The flag set if failed.

Example

This set of statements changes the chrominance of an RGB image by splitting it into the LCH components, offsetting all the pixels in the Chroma component by a value of +64 and then merging the components back into an RGB image.

L=101

C=102

H=103

Off=64

setCurDir("samples")

loadIm (1,"sample14.iwd")

splitLCH (1, L, C, H)

offsetIm (C, C, Off, M_CLIP)

mergeLCH (L, C, H, 2)

Remark

For more information on the LCH color space see setColorSpace.