This function is used to downshift a chosen range of 8 bits (out of a maximum of 16) to the 256 pixel values that can be shown on an 8-bit display device.

Declaration:

AT_ERRCOUNT ACCUAPI MED_IP_reduce_depth_with_downshift (
        HIGEAR hIGear,
        const UINT downshift
);

Arguments:

Return Value:

Returns the number of ImageGear errors that occurred during the function call.

Supported Raster Image Formats:

Grayscale – 9…16 bpp.

Remarks:

This function is used to downshift a chosen range of 8 bits (out of a maximum of 16) to the 256 pixel values that can be shown on an 8-bit display device. For example, if you set downshift to 8, and the image has 16 bpp, bits 8-15 will be downshifted and used alone as the pixel values.

This function will directly alter the pixel data.

See also MED_IP_reduce_depth_with_LUT().