imaqColorLookup
Usage
int imaqColorLookup(Image* dest, const Image* source, ColorMode mode, const Image* mask, const short* plane1, const short* plane2, const short* plane3);
Purpose
Performs a transformation on an image by replacing each pixel value in a given color plane with the lookup table entry corresponding to that value.
 |
Note This function does not support the CIE L*a*b* and CIE XYZ color modes. |
Image Types Supported
IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| dest | Image* | The destination image. |
| source | const Image* | The image to apply the lookup table to. |
| mode | ColorMode | The color space in which to apply the lookup table. If the image is not in the color space you specify, the function converts the pixels into the specified color space, applies the lookup table, and converts the pixels back to their original color space. |
| mask | const Image* | An optional mask image. This image must be an IMAQ_IMAGE_U8 image. The function applies the lookup to only those pixels in the source image whose corresponding pixels in the mask image are non-zero. Set this parameter to NULL to apply the lookup to the whole image. |
| plane1 | const short* | The lookup table for the first plane of the image. If you set this parameter, the lookup table must contain 256 values. Set this parameter to NULL to leave the first plane unchanged. |
| plane2 | const short* | The lookup table for the second plane of the image. If you set this parameter, the lookup table must contain 256 values. Set this parameter to NULL to leave the second plane unchanged. |
| plane3 | const short* | The lookup table for the third plane of the image. If you set this parameter, the lookup table must contain 256 values. Set this parameter to NULL to leave the third plane unchanged. |
Return Value
| Type |
Description |
|---|---|
| int | On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError(). |
Parameter Discussion
plane1—The color plane depends on the mode, as follows:
| IMAQ_RGB | red plane |
| IMAQ_HSL | hue plane |
| IMAQ_HSV | hue plane |
| IMAQ_HSI | hue plane |
plane2—The color plane depends on mode, as follows:
| IMAQ_RGB | green plane |
| IMAQ_HSL | saturation plane |
| IMAQ_HSV | saturation plane |
| IMAQ_HSI | saturation plane |
plane3—The color plane depends on mode, as follows:
| IMAQ_RGB | blue plane |
| IMAQ_HSL | luminance plane |
| IMAQ_HSV | value plane |
| IMAQ_HSI | intensity plane |