graphicsmagick | 易学教程

IM4Java + GraphicsMagick 实现高清图片剪裁处理

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简单介绍 GraphicsMagick是ImageMagick的一个分支，相对于ImageMagick而言，TA处理速度更快，消耗资源更少。 GraphicsMagick 是一个用来读写、生成超过90种图像格式的工具集合，支持包括 TIFF, JPEG, JPEG-2000,PNG, PDF, PhotoCD, SVG, 和GIF 等图像格式。GraphicsMagick 是基于 ImageMagick 开发的。 im4java是ImageMagick的另一个Java开源接口。与JMagick不同之处在于im4java只是生成与ImageMagick相对应的命令行，然后将生成的命令行传至选中的IM-command（使用java.lang.ProcessBuilder.start()实现）来执行相应的操作。它支持大部分ImageMagick命令，可以针对不同组的图片多次复用同一个命令行。 im4java也是能够高清压缩图片，而且它也特别强大，至少一些基本常见的业务都是可以完美实现的。 Cropper是一款使用简单且功能强大的图片剪裁jQuery插件。该图片剪裁插件支持图片放大缩小，支持鼠标滚轮操作，支持图片旋转，支持触摸屏设备，支持canvas，并且支持跨浏览器使用。技术选型 ImageCropper + GraphicsMagick + im4java + SpringMVC

How can I install GraphicsMagick or ImageMagick on AWS Lambda?

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I am using the gm package for Node.js along with the default ImageMagick installation that is available on AWS Lambda. const gm = require('gm').subClass({ imageMagick: true }); For some reason, the resize functionality fails for certain images. I created an EC2 instance with Amazon Linux AMI (ami-hvm-2016.03.3.x86_64-gp2). I installed the (old) 6.x version of ImageMagick that is available from yum . When I run my script with that install on the EC2 instance, it reproduces the failure I see when the code runs on Lambda, confirming it is something with this version of IM that is causing the

Error: spawn ENOENT while using GM in node

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问题 When I try to resize an image like this: gm('public/uploads/1710410635.jpg') .resize(240, 240) .noProfile() .write('public/uploads/1710410635_t.jpg', function (err) { if (!err) console.log('done'); }); I get this error: events.js:72 throw er; // Unhandled 'error' event ^ Error: spawn ENOENT at errnoException (child_process.js:945:11) at Process.ChildProcess._handle.onexit (child_process.js:736:34) My file structure is as follows: The code is executed in the postnewsitem.js file why is this

How can I install GraphicsMagick or ImageMagick on AWS Lambda?

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问题 I am using the gm package for Node.js along with the default ImageMagick installation that is available on AWS Lambda. const gm = require('gm').subClass({ imageMagick: true }); For some reason, the resize functionality fails for certain images. I created an EC2 instance with Amazon Linux AMI (ami-hvm-2016.03.3.x86_64-gp2). I installed the (old) 6.x version of ImageMagick that is available from yum . When I run my script with that install on the EC2 instance, it reproduces the failure I see

What is the difference between ImageMagick and GraphicsMagick?

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问题 I've found myself evaluating both of these libs. Apart from what the GraphicsMagick comparison says, I see that ImageMagick still got updates and it seems that the two are almost identical. I'm just looking to do basic image manipulation in C++ (i.e. image load, filters, display); are there any differences I should be aware of when choosing between these libraries? 回答1: From what I have read GraphicsMagick is more stable and is faster. I did a couple of unscientific tests and found gm to be