This function can be used to pseudo-color the brightest and the darkest pixels in a 16-bit grayscale image.
Declaration:
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AT_ERRCOUNT ACCUAPI MED_display_color_limits(
HIGEAR hIGear,
const INT thresh_low,
const INT low_red,
const INT low_green,
const INT low_blue,
const INT thresh_high,
const INT high_red,
const INT high_green,
const INT high_blue
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | HIGEAR handle to the image. |
| thresh_low | const INT | Set to an INT value for the lower pixel value limit. All pixels at or below this value will be pseudo-colored. |
| low_red | const INT | Set to an INT for the red component of the RGB color that will be used for all pixels below thresh_low. |
| low_green | const INT | Set to an INT for the green component of the RGB color that will be used for all pixels below thresh_low. |
| low_blue | const INT | Set to an INT for the blue component of the RGB color that will be used for all pixels below thresh_low. |
| thresh_high | const INT | Set to an INT value for the upper pixel value limit. All pixels at or above this value will be pseudo-colored. |
| high_red | const INT | Set to an INT for the red component of the RGB color that will be used for all pixels above thresh_high. |
| high_green | const INT | Set to an INT for the green component of the RGB color that will be used for all pixels above thresh_high. |
| high_blue | const INT | Set to an INT for the blue component of the RGB color that will be used for all pixels above thresh_high. |
Return Value:
Returns the number of ImageGear errors that occurred during the function call.
Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Remarks:
This is typically used to clearly see pixel values that are over-saturated (255 and up) or under-saturated (0 and below). However, this function lets you customize the settings for the upper and lower pixel value limits with thresh_low and thresh_high.
The color is applied after the 16x8 display LUT is applied to the image and is not affected by altering this LUT.
Pixels having values at or below thresh_low are colored by low_color and pixels having values at or above thresh_high are colored by high_color. All pixels having values within the 2 limits are set to normal linear gray.
To turn off this effect, set thresh_low to -1 and thresh_high to 256.
This function does not cause the image to be displayed or repainted. It only fills the 16x8 LUT. To display the results of this function, use IG_dspl_image_draw().