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PHP中使用Imagick实现各种图片效果实例

PHP教程 Sam 510℃ 0评论

imagick是一个功能强大的图像处理库。

偏置图像:

thumbnailImage($width,$height) 改变图片大小

addNoiseImage(int $noise_type [, int $channel= Imagick::CHANNEL_ALL ]);
功能:
Adds random noise to the image
添加干扰素

Noise constants ( $noise_type 类型)
imagick::NOISE_UNIFORM (integer)
imagick::NOISE_GAUSSIAN (integer)
imagick::NOISE_MULTIPLICATIVEGAUSSIAN (integer)
imagick::NOISE_IMPULSE (integer)
imagick::NOISE_LAPLACIAN (integer)
imagick::NOISE_POISSON (integer)
Channel constants ( $channel 类型)
imagick::CHANNEL_UNDEFINED (integer)
imagick::CHANNEL_RED (integer)
imagick::CHANNEL_GRAY (integer)
imagick::CHANNEL_CYAN (integer)
imagick::CHANNEL_GREEN (integer)
imagick::CHANNEL_MAGENTA (integer)
imagick::CHANNEL_BLUE (integer)
imagick::CHANNEL_YELLOW (integer)
imagick::CHANNEL_ALPHA (integer)
imagick::CHANNEL_OPACITY (integer)
imagick::CHANNEL_MATTE (integer)
imagick::CHANNEL_BLACK (integer)
imagick::CHANNEL_INDEX (integer)
imagick::CHANNEL_ALL (integer)

例子:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->thumbnailImage(100,0);
$image->addNoiseImage(imagick::NOISE_POISSON,imagick::CHANNEL_OPACITY);
echo $image;
?>

annotateImage 创建文本图像

<?php
$image = new Imagick();
$draw = new ImagickDraw();
$pixel = new ImagickPixel( ‘gray’ );
$image->newImage(800, 75, $pixel);
$pixel->setColor(‘black’);
$draw->setFont(‘Bookman-DemiItalic’);
$draw->setFontSize( 30 );
$image->annotateImage($draw, 10, 45, 0, ‘The quick brown fox jumps over the lazy dog’);
$image->setImageFormat(‘png’);
header(‘Content-type: image/png’);
echo $image;
?>

blurImage(float $radius , float $sigma [, int $channel ])
Adds blur filter to image 图像模糊度处理
参数:

int $channel :
imagick::CHANNEL_UNDEFINED (integer)
imagick::CHANNEL_RED (integer)
imagick::CHANNEL_GRAY (integer)
imagick::CHANNEL_CYAN (integer)
imagick::CHANNEL_GREEN (integer)
imagick::CHANNEL_MAGENTA (integer)
imagick::CHANNEL_BLUE (integer)
imagick::CHANNEL_YELLOW (integer)
imagick::CHANNEL_ALPHA (integer)
imagick::CHANNEL_OPACITY (integer)
imagick::CHANNEL_MATTE (integer)
imagick::CHANNEL_BLACK (integer)
imagick::CHANNEL_INDEX (integer)
imagick::CHANNEL_ALL (integer)

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->blurImage(5,3);
echo $image;
?>

borderImage ( mixed $bordercolor , int $width , int $height ) 图片边框处理

charcoalImage ( float $radius , float $sigma ) 图像素描处理
参数说明:
$radius :越小越薄。
$sigma: 越大 墨越深 反之。

chopImage ( int $width , int $height , int $x , int $y )
参数说明:删除一定范围的图像区域
就不做参数说明,一看便知.

colorizeImage( mixed $colorize , mixed $opacity )混合填充颜色
$colorize 颜色
$opacit 透明度

<?php
/*
胶卷底片效果
*/
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->negateImage(false);
$image->colorizeImage(‘#000’,1.0);
echo $image;
?>

embossImage ( float $radius , float $sigma )
功能: 返回一个灰度级3D图像 不太好。

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->embossImage(1,1);
echo $image;
?>

(两张效果图)

flipImage(void)
功能: 创建图像倒影(垂直翻转)

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->flipImage();
echo $image;
?>

flopImage ( void )
功能: 图像水平横向翻转

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->flopImage();
echo $image;
?>

frameImage(mixed $matte_color,int $width, int $height,int $inner_bevel, int $outer_bevel)
功能:创建3D图像边框
参数说明:
$matte_color:颜色
$inner_bevel:边框内部倾斜度
$outer_bevel:外部边框倾斜度

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->frameImage($color,11,11,1,10);
echo $image;
?>

注意事项:
$width(宽度)不能小于$inner_bevel(边框内部倾斜度)
Imagick::gammaImage (float $gamma [,int $channel= Imagick::CHANNEL_ALL])
功能:调整图像灰度系数
参数说明:
float $gamma :灰度系数值
$channel 默认为 Imagick::CHANNEL_ALL
Imagick::CHANNEL_ALL

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->gammaImage(30);
echo $image;
?>

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->gammaImage(30);
echo $image;
?>

gaussianBlurImage ( float $radius , float $sigma [, int $channel= Imagick::CHANNEL_ALL ] )
功能:高斯模糊处理 类似于photo的高斯模糊
参数说明:
float $radius:高斯模糊的半径,像素,不包括中心象素。
float $sigma :高斯的标准偏差,以像素为单位。我觉得这个参数最重要。
int $channel :图像颜色模式。

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->gaussianBlurImage(30,3);
echo $image;
?>

levelImage ( float $blackPoint , float $gamma , float $whitePoint [, int $channel= Imagick::CHANNEL_ALL ] )
功能: 调整图像的色阶(Adjusts the levels of an image)
参数说明

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->levelImage(4,4,4);
echo $image;
?>

例子2:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->levelImage(200,200,200,imagick::CHANNEL_GREEN);
echo $image;
?>

magnifyImage( void )
功能说明:简便的图像等比例放大2倍(Is a convenience method that scales an image proportionally to twice its original size. )

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->magnifyImage ();
echo $image;
?>

medianFilterImage ( float $radius )
功能:特是的滤镜 有点像photoshop 调色刀滤镜

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->medianFilterImage(5);
echo $image;
?>

minifyImage(void)
功能:图小缩小一倍(Scales an image proportionally to half its size)

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->minifyImage();
echo $image;
?>

modulateImage ( float $brightness , float $saturation , float $hue )
功能:控制调整图像的 亮度、饱和度、色调。
参数说明:
float $brightness: 亮度
float $saturation :饱和度
float $hue 色调
例子1:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->modulateImage(100,1,100);
echo $image;
?>

例子2:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$image->modulateImage(250,1,250);
echo $image;
?>

motionBlurImagemotionBlurImage ( float $radius , float $sigma , float $angle [, int $channel= Imagick::CHANNEL_DEFAULT ] )
功能:模拟运动模糊(Simulates motion blur) ,类似photoshop的动感模糊滤镜功能
参数说明:
float $radius: 高斯 半径,不包过中心像素。
float $sigma:标准偏差的高斯,以像素为单位。【重要参数】
float $angle:模糊角度。
int $channel:图像颜色模式。默认为 Imagick::CHANNEL_DEFAULT
例子1:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->motionBlurImage (61,10,10);
echo $image;
?>

例子2:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->motionBlurImage (201,10,100);
echo $image;
?>

oilPaintImage ( float $radius ):
功能说明: 模拟油画滤镜(Simulates an oil painting)
例子:

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->oilPaintImage(1);
echo $image;
?>

radialBlurImage ( float $angle [, int $channel= Imagick::CHANNEL_ALL ] )
功能: 径向模糊(Radial blurs an image)

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->radialBlurImage(30);
echo $image;
?>

raiseImage ( int $width , int $height , int $x , int $y , bool $raise )
功能说明:创建3D图像按钮(Creates a simulated 3d button-like effect)

<?php
ini_set(‘display_errors’,1);
header(‘Content-type: image/jpeg’);
$image = new Imagick(‘1.jpg’);
$color=new ImagickPixel();
$color->setColor(“rgb(220,220,220)”);
$image->raiseImage(10,10,3,5,6);
echo $image;
?>

附1:要求缩小图片尺寸、增加半透明边框,读入exif信息,按指定要求显示在图片上

$towidth = ‘500’;
$toheight = ‘700’; //设置图片调整大小时允许的最大宽度和高度
$sourcefile = ‘./b.jpg’; //定义一个图像文件路径
//$image->writeImage(‘./b.jpg.bak’); //可以备份这个图片
$myimage = new Imagick( $sourcefile ); //读入该图像文件
$exifobject = my_exif( $myimage ); //自写函数,读取exif信息(拍摄数据),按自己的要求排列exif信息,返回对象
//$myimage->setImageFormat(‘jpeg’); //把图片转为jpg格式
$myimage->setCompressionQuality( 100 ); //设置jpg压缩质量,1 – 100
$myimage->enhanceImage(); //去噪点
$sourcewidth = $myimage->getImageWidth(); //获取读入图像原始大小
if ( $sourcewidth > $towidth )
{
$myimage->scaleImage( $towidth, $toheight, true ); //调整图片大小
}
$myimage->raiseImage( 8, 8, 0, 0, 1 ); //加半透明边框
$resizewidth = $myimage->getImageWidth(); //读出调整之后的图片大小
$resizeheight = $myimage->getImageHeight();
$drawback = new ImagickDraw(); //实例化一个绘画对象,绘制半透明黑色背景给exif信息用
$drawback->setFillColor( new ImagickPixel(‘#000000’) ); //设置填充颜色为黑色
$drawback->setFillOpacity( 0.6 ); //填充透明度为0.6,参数0.1-1,1为不透明
$drawback->rectangle( $resizewidth / 2 – 190, $resizeheight – 50, $resizewidth / 2 + 190, $resizeheight – 12 ); //绘制矩形参数,分别为左上角x、y,右下角x、y
$myimage->drawImage( $drawback ); //确认到image中绘制该矩形框
$draw = new ImagickDraw(); //实例化一个绘画对象,绘制exif文本信息嵌入图片中
$draw->setFont( ‘./xianhei.ttf’ ); //设置文本字体,要求ttf或者ttc字体,可以绝对或者相对路径
$draw->setFontSize( 11 ); //设置字号
$draw->setTextAlignment( 2 ); //文字对齐方式,2为居中
$draw->setFillColor( ‘#FFFFFF’ ); //文字填充颜色
$myimage->annotateImage( $draw, $resizewidth / 2, $resizeheight – 39, 0, $exifobject->row1 ); //绘制第一行文本,居中
$myimage->annotateImage( $draw, $resizewidth / 2, $resizeheight – 27, 0, $exifobject->row2 ); //绘制第二行文本,居中
$myimage->annotateImage( $draw, $resizewidth / 2, $resizeheight – 15, 0, $exifobject->row3 ); //绘制第三行文本,居中
/* Output the image with headers */
header( ‘Content-type: image/jpeg’ ); //php文件输出mime类型为jpeg图片
echo $myimage; //在当前php页面输出图片
//$image->writeImage(‘./b.new.jpg’); //如果图片不需要在当前php程序中输出,使用写入图片到磁盘函数,上面的设置header也可以去除
$myimage->clear();
$myimage->destroy(); //释放资源
//自写函数,读取exif信息,返回对象
function my_exif( $myimage )
{
$exifArray = array( ‘exif:Model’ => ‘未知’, ‘exif:DateTimeOriginal’ => ‘未知’, ‘exif:ExposureProgram’ => ‘未知’, ‘exif:FNumber’ => ‘0/10’, ‘exif:ExposureTime’ => ‘0/10’, ‘exif:ISOSpeedRatings’ => ‘未知’,
‘exif:MeteringMode’ => ‘未知’, ‘exif:Flash’ => ‘关闭闪光灯’, ‘exif:FocalLength’ => ‘未知’, ‘exif:ExifImageWidth’ => ‘未知’, ‘exif:ExifImageLength’ => ‘未知’ ); //初始化部分信息,防止无法读取照片exif信息时运算发生错误
$exifArray = $myimage->getImageProperties( “exif:*” ); //读取图片的exif信息,存入$exifArray数组
//如果需要显示原数组可以使用print_r($exifArray);
$r->row1 = ‘相机:’ . $exifArray[‘exif:Model’];
$r->row1 = $r->row1 . ‘ 拍摄时间:’ . $exifArray[‘exif:DateTimeOriginal’];
switch ( $exifArray[‘exif:ExposureProgram’] )
{
case 1:
$exifArray[‘exif:ExposureProgram’] = “手动(M)”;
break; //Manual Control
case 2:
$exifArray[‘exif:ExposureProgram’] = “程序自动(P)”;
break; //Program Normal
case 3:
$exifArray[‘exif:ExposureProgram’] = “光圈优先(A,Av)”;
break; //Aperture Priority
case 4:
$exifArray[‘exif:ExposureProgram’] = “快门优先(S,Tv)”;
break; //Shutter Priority
case 5:
$exifArray[‘exif:ExposureProgram’] = “慢速快门”;
break; //Program Creative (Slow Program)
case 6:
$exifArray[‘exif:ExposureProgram’] = “运动模式”;
break; //Program Action(High-Speed Program)
case 7:
$exifArray[‘exif:ExposureProgram’] = “人像”;
break; //Portrait
case 8:
$exifArray[‘exif:ExposureProgram’] = “风景”;
break; //Landscape
default:
$exifArray[‘exif:ExposureProgram’] = “其它”;
}
$r->row1 = $r->row1 . ‘ 模式:’ . $exifArray[‘exif:ExposureProgram’];
$exifArray[‘exif:FNumber’] = explode( ‘/’, $exifArray[‘exif:FNumber’] );
$exifArray[‘exif:FNumber’] = $exifArray[‘exif:FNumber’][0] / $exifArray[‘exif:FNumber’][1];
$r->row2 = ‘光圈:F/’ . $exifArray[‘exif:FNumber’];
$exifArray[‘exif:ExposureTime’] = explode( ‘/’, $exifArray[‘exif:ExposureTime’] );
if ( ($exifArray[‘exif:ExposureTime’][0] / $exifArray[‘exif:ExposureTime’][1]) >= 1 )
{
$exifArray[‘exif:ExposureTime’] = sprintf( “%.1fs”, (float)$exifArray[‘exif:ExposureTime’][0] / $exifArray[‘exif:ExposureTime’][1] );
} else
{
$exifArray[‘exif:ExposureTime’] = sprintf( “1/%ds”, $exifArray[‘exif:ExposureTime’][1] / $exifArray[‘exif:ExposureTime’][0] );
}
$r->row2 = $r->row2 . ‘ 快门:’ . $exifArray[‘exif:ExposureTime’];
$r->row2 = $r->row2 . ‘ ISO:’ . $exifArray[‘exif:ISOSpeedRatings’];
$exifArray[‘exif:ExposureBiasValue’] = explode( “/”, $exifArray[‘exif:ExposureBiasValue’] );
$exifArray[‘exif:ExposureBiasValue’] = sprintf( “%1.1feV”, ((float)$exifArray[‘exif:ExposureBiasValue’][0] / $exifArray[‘exif:ExposureBiasValue’][1] * 100) / 100 );
if ( (float)$exifArray[‘exif:ExposureBiasValue’] > 0 )
{
$exifArray[‘exif:ExposureBiasValue’] = “+” . $exifArray[‘exif:ExposureBiasValue’];
}
$r->row2 = $r->row2 . ‘ 补偿:’ . $exifArray[‘exif:ExposureBiasValue’];
switch ( $exifArray[‘exif:MeteringMode’] )
{
case 0:
$exifArray[‘exif:MeteringMode’] = “未知”;
break;
case 1:
$exifArray[‘exif:MeteringMode’] = “矩阵”;
break;
case 2:
$exifArray[‘exif:MeteringMode’] = “中央重点平均”;
break;
case 3:
$exifArray[‘exif:MeteringMode’] = “点测光”;
break;
case 4:
$exifArray[‘exif:MeteringMode’] = “多点测光”;
break;
default:
$exifArray[‘exif:MeteringMode’] = “其它”;
}
$r->row2 = $r->row2 . ‘ 测光:’ . $exifArray[‘exif:MeteringMode’];
switch ( $exifArray[‘exif:Flash’] )
{
case 1:
$exifArray[‘exif:Flash’] = “开启闪光灯”;
break;
}
$r->row2 = $r->row2 . ‘ ‘ . $exifArray[‘exif:Flash’];
if ( $exifArray[‘exif:FocalLengthIn35mmFilm’] )
{
$r->row3 = ‘等效焦距:’ . $exifArray[‘exif:FocalLengthIn35mmFilm’] . “mm”;
} else
{
$exifArray[‘exif:FocalLength’] = explode( “/”, $exifArray[‘exif:FocalLength’] );
$exifArray[‘exif:FocalLength’] = sprintf( “%4.1fmm”, (double)$exifArray[‘exif:FocalLength’][0] / $exifArray[‘exif:FocalLength’][1] );
$r->row3 = ‘焦距:’ . $exifArray[‘exif:FocalLength’];
}
$r->row3 = $r->row3 . ‘ 原始像素:’ . $exifArray[‘exif:ExifImageWidth’] . ‘x’ . $exifArray[‘exif:ExifImageLength’] . ‘px’;
if ( $exifArray[‘exif:Software’] )
{
$r->row3 = $r->row3 . ‘ 后期:’ . $exifArray[‘exif:Software’];
}
return $r;
}

附2:处理图片水印

 

转载请注明:PHP笔记 » PHP中使用Imagick实现各种图片效果实例

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