L_BITMAPCLASS Registered Class:
 Image Processing
  Modifying Intensity Values

For overall brightness and contrast:

L_BM_INTENSITY

L_BM_GAMMACORRECT

L_BM_CONTRAST

L_BM_HISTOEQ

For color changes:

L_BM_HUE

L_BM_SATURATION

L_BM_INVERT

For filtering:

L_BM_INTENSITYDETECT