The ImagickPixel::getColorValueQuantum() function is an inbuilt function in PHP which is used to get the normalized value of the provided color channel for a given ImagickPixel’s color. The normalized value lies in the quantum range where 65535 is maximum and 0 is lowest on contrary to getColorValue() function where 1 was highest and 0 was lowest.
Syntax:
int ImagickPixel::getColorValueQuantum( int $color )
Parameters:This function accepts a single parameter $color which holds one of COLOR constants.
List of all COLOR constants are given below:
- imagick::COLOR_BLACK (11)
- imagick::COLOR_BLUE (12)
- imagick::COLOR_CYAN (13)
- imagick::COLOR_GREEN (14)
- imagick::COLOR_RED (15)
- imagick::COLOR_YELLOW (16)
- imagick::COLOR_MAGENTA (17)
- imagick::COLOR_OPACITY (18)
- imagick::COLOR_ALPHA (19)
- imagick::COLOR_FUZZ (20)
Return Value: This function returns an integer value containing the value of color.
Exceptions: This function throws ImagickException on error.
Below given programs illustrate the ImagickPixel::getColorValueQuantum() function in PHP:
Program 1:
<?php // Create a new imagickPixel object $imagickPixel = new ImagickPixel('#d4a62a'); // Get the Color value with imagick::COLOR_BLUE $colorValue = $imagickPixel->getColorValueQuantum(imagick::COLOR_BLUE); echo $colorValue; ?> |
Output:
10794
Program 2:
<?php // Create a new imagick object $imagick = new Imagick( // Get the image histogram $histogramElements = $imagick->getImageHistogram(); // Get the 501th pixel $getPixel = $histogramElements[500]; // Get the Color value with imagick::COLOR_GREEN $colorValue = $getPixel->getColorValueQuantum(imagick::COLOR_GREEN); echo $colorValue; ?> |
Output:
26214
Reference: https://www.php.net/manual/en/imagickpixel.getcolorvaluequantum.php
