Example of how to obtain the RGB color value of an image in php. _ PHP Tutorial

Php obtains the RGB color value of an image ,. For example, php obtains the RGB color value of an image. for example, php obtains the RGB color value of an image. many Image sites retrieve the main color value of an image based on the image uploaded by the user, then, in the example of getting the RGB color value of the image through face filter php,

Example of obtaining the RGB color value of an image using php

Many image sites retrieve the main color values of the image based on the image uploaded by the user, and then search for the relevant image by color.

Previously, the image was scaled (or mosaic) according to the online method, then each pixel was traversed, and the value of RGB was the most frequently. this was too inefficient and the obtained RGB value was not accurate enough. Then we can find that the average RGB value in the image can be easily obtained using the quantizeImage method of Imagick.

$average = new Imagick("xiaocai.jpg");$average->quantizeImage( 10, Imagick::COLORSPACE_RGB, 0, false, false );$average->uniqueImageColors();function GetImagesColor( Imagick $im ){$colorarr = array();$it = $im->getPixelIterator();$it->resetIterator();while( $row = $it->getNextIteratorRow() ){foreach ( $row as $pixel ){// www.jbxue.com$colorarr[] = $pixel->getColor();}}return $colorarr;}$colorarr = GetImagesColor($average);foreach($colorarr as $val){echo "
";} 

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Examples of retrieving the RGB color value of an image in php. many Image sites retrieve the main color value of the image based on the image uploaded by the user...