适用php环境，最好能够安装gm(graphicsmagick),速度比gd快很多
pictureColor.class.php
<?php /**
* 取得图片色系名称
* 参考地址
* http://www.cnblogs.com/codingspace/archive/2010/04/09/1707900.html
* http://www.workwithcolor.com/color-converter-01.htm
* http://www.easyrgb.com/index.php?X=MATH&H=18#text18
*
* 用法
* $obj = new pictureColor();
* echo $obj->colorName('E:\project\lumen\public\t.jpg');
* echo $obj->hexName('E:\project\lumen\public\t.jpg');
*
* @author lock
* @link https://github.com/lock-upme
*/
class pictureColor
{
/**
* GM Lib
*/
public $gm = 'C:\Progra~1\GraphicsMagick-1.3.22-Q8\gm.exe';
/**
* 获取颜色使用库类型
* gd or gm
*/
public $type = 'gd';
/**
* 十六进制
*/
public $hex = array ('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F');
/**
* 获得图片色系
*
* @param string $file
* @return string
*/
public function colorName($file) {
if (empty($file)) { return false; }
$rgb = $this->getRGB($file, $this->type);
$hsl = $this->RGB2HSL($rgb);
return $this->getColorName($hsl);
}
/**
* 取得图片十六进制
*
* @param string $file
* @return string
*/
public function hexName($file) {
if (empty($file)) { return false; }
$rgb = $this->getRGB($file, $this->type);
return $this->RGB2Hex($rgb);
}
/**
* 取得图片RGB
*
* @param string $file
* @param string $type gd/gm
* @return array
*/
public function getRGB($file, $type='gd') {
if (empty($file)) { return false; }
if ($type == 'gd') {
$filext = trim(strtolower(strrchr($file, '.')),'.');
if ($filext == 'jpg' || $filext == 'jpeg') {
$img = ImageCreateFromJpeg($file);
} elseif ($filext == 'png') {
$img = imagecreatefrompng($file);
} elseif ($filext == 'bmp') {
$img = imagecreatefromwbmp($file);
} elseif ($filext == 'gif') {
$img = imagecreatefromgif($file);
}
$w = imagesx($img);
$h = imagesy($img);
$r = $g = $b = 0;
for($y = 0; $y > 16;
$g += $rgb >> 8 & 255;
$b += $rgb & 255;
}
}
$pxls = $w * $h;
$r = (round($r / $pxls));
$g = (round($g / $pxls));
$b = (round($b / $pxls));
/*
$r = dechex (round($r / $pxls));
$g = dechex (round($g / $pxls));
$b = dechex (round($b / $pxls));
return $r.$g.$b;
*/
return array( '0' => $r, '1' => $g, '2' => $b );
} elseif ($type == 'gm') {
//$cmd = $this->gm. " identify -verbose $file | grep Mean | awk -F' ' '{print $3}' | tr -d '()'";
$cmd = $this->gm . " identify -verbose $file";
$res = shell_exec($cmd);
//print_r($res);
preg_match_all('/Mean:\s+[0-9]+\.[0-9]+\s\((.*)\)/', $res, $match);
//print_r($match);
$rgb = $match[1];
if (count($rgb) != 3) { //workaround{TODO:to be fixed}
$rgb['2'] = $rgb['1'] = $rgb['0'];
}
while (list($key, $val) = each($rgb)) {
$rgb[$key] = round($val * 255, 2);
}
return $rgb;
}
}
public function RGB2Hex($rgb) {
$hexColor = '';
$hex = $this->hex;
for($i = 0; $i 16 ) {
$r = $c % 16;
$c = ($c / 16) >> 0;
array_push ( $hexAr, $hex [$r] );
}
array_push ( $hexAr, $hex [$c] );
$ret = array_reverse ( $hexAr );
$item = implode ( '', $ret );
$item = str_pad ( $item, 2, '0', STR_PAD_LEFT );
$hexColor .= $item;
}
return $hexColor;
}
/**
* RGB转HSL
*
* @param array $rgb
* @return array
*/
public function RGB2HSL($rgb) {
list($r, $g, $b) = $rgb;
$r /= 255;
$g /= 255;
$b /= 255;
$max = max($r, $g, $b);
$min = min($r, $g, $b);
$delta = $max - $min;
$l = ($max + $min) / 2;
if ($delta == 0) {
$h = 0;
$s = 0;
} else {
$s = ($l 1 ? -1 : 0);
}
return array($h * 360, $s * 100, $l * 100);
}
/**
* HSL对应颜色名称
*
* @param array $hsl
* @return string
*/
public function getColorName($hsl) {
$colorarr = array(
'0, 100, 50' => '红色',
'30, 100, 50' => '橙色',
'60, 100, 50' => '黄色',
'120, 100, 75' => '绿色',
'240, 100, 25' => '蓝色',
'300, 100, 25' => '紫色',
'255, 152, 191' => '粉红',
//'136, 84, 24' => '棕色',
'0, 0, 50' => '灰色',
'0, 0, 0' => '黑色',
'0, 0, 100' => '白色',
);
$distarr = array();
foreach ($colorarr as $key => $val) {
list($h, $s, $l) = explode(',', $key);
$distarr[$key] = pow(($hsl['0'] - $h), 2) + pow(($hsl['1'] - $s), 2) + pow(($hsl['2'] - $l), 2);
}
asort($distarr);
list($key) = each($distarr);
return $colorarr[$key];
}
}
