ImageGear Professional for Linux
IG_IP_DCRaw_tone_LUT_build
| ImageGear Professional > API Reference Guide > Core Component API Reference > Core Component Functions Reference > Image Processing Functions > IG_IP_DCRaw_tone_LUT_build |
Builds tone correction LUT.
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AT_ERRCOUNT ACCUAPI IG_IP_DCRaw_tone_LUT_build (
AT_INT ChannelDepth,
AT_DOUBLE Exposure,
AT_DOUBLE Shadows,
HIGLUT* ToneLUT
);
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| Name | Type | Description |
| ChannelDepth | AT_INT | Bit depth of the LUT. |
| Shadows | AT_DOUBLE | Amount by which to move the black point. |
| Exposure | AT_DOUBLE | Exposure compensation, in f/stops. |
| ToneLUT | HIGLUT* | Returns new LUT. |
Returns the number of ImageGear errors that occurred during this function call.
This function does not process image pixels.
The LUT moves image's black point by 2^16 / 1000 * Shadows, and adjusts white point according to Exposure parameter. Exposure parameter is measured in f/stops and works similar to modifying the camera exposure.