《PHP识别图片主色调.docVIP

[PHP]识别图片主色调 2012-08-07 10:16:52 ????我来说两句? 收藏 ?? 我要投稿 ?? [字体：小 大] 一、适用情景：，根据颜色列出相应图片。 二、主程序及API解释：[php]??php??class MajorColor?{???? //参考颜色???? protected $_colors = null;????????? //容差???? protected $_tolerance = 80;????????? //忽略的颜色???? protected $_ignoreColors = array();????????? //支持的图片类型???? protected $_funcs = array(image/png = imagecreatefrompng, image/jpeg = imagecreatefromjpeg, image/gif = imagecreatefromgif);????????? public function __construct(array $colors = null) {???????? if(null !== $colors) {???????????? $this-_colors = $colors;???????? }???? }????????? public function setColors(array $colors) {???????? $this-_colors = $colors;???? }????????? public function setTolerance($tolerance) {???????? $this-_tolerance = $tolerance;???? }????????? public function setIgnoreColors($colors) {???????? $this-_ignoreColors = $colors;???? }????????? public function _isValidColor($confVal, $val) {???????? if(is_array($confVal)) {???????????? return $val = $confVal[0] $val = $confVal[1];???????? } else {???????????? return $val = $confVal - $this-_tolerance $val = $confVal + $this-_tolerance;???????? }???? }????????? public function getOrderedColors($pic) {???????? $size = getimagesize($pic);???????? if(!$size) {???????????? return false;???????? }????????????????? $width = $size[0];???????? $height = $size[1];???????? $mime = $size[mime];???????? $func = isset($this-_funcs[$mime]) ? $this-_funcs[$mime] : null;???????? if(!$func) {???????????? return false;???????? }????????????????? $im = $func($pic);???????? if(!$im) {???????????? return false;???????? }????????? $total = $width * $height;???????? $nums = array();???????? for($i = 0; $i $width; $i++) {???????????? for($m = 0; $m $height; $m++) {???????????????? $color_index = imagecolorat($im, $i, $m);???????????????? $color_tran = imagecolorsforindex($im, $color_index);???????????????? $alpha = $color_tran[alpha];???????????????? unset($col