graphicsmagick

var buf = require('fs').readFileSync('test.jpg'); gm().in('-page', '+0+0').in(buf,'test.jpg').write('output.jpg', function (err) { if (err) console.log(err); }) in this case i want to pass buffer data as input to the gm.in() method. Below is the link I'm referencing but in it, an image path is used as an input. I want to use buffer data as an input. How can I do this? Tile four images together using Node.js and GraphicsMagick Without modifying the source of GraphicsMagick itself, you can't. The gm module interacts with the GraphicsMagick program through the command line. The arguments you're

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm using nodejs and graphicsmagick to process images with text, then streaming the final jpg to S3. Using postman, I was able to test this flow on my localhost and everything works fine. However, I'm having issues now that I moved it to Elastic Beanstalk. When I post to the endpoint, it uploads a blank file to S3 and there are no errors logged in EB. I think it has something to do with the software but am a bit stuck. Any advice appreciated! Thanks! Top file is from localhost, bottom file is from Elastic Beanstalk: http://cl.ly

I am trying to pipe data from a stream into a child process. var gm = spawn( 'gm convert - -thumbnail 220x165^ -gravity center -extent 220x165 thumb.jpg' ); var rs = fs.createReadStream( 'cow.jpg' ); rs.pipe( gm.stdin ) Do I need to call end on gm for it to work? Also in my real code I am getting the stream from a database. Example of how to stream a request into imagemagick: var image = request.get(req.params.url); var size = req.params.size.split('x'); var args = ['-', '-thumbnail', req.params.size + '^', '-gravity', 'center', '-extent', req.params.size, '-' ]; var convert = spawn('convert',

I have four 256x256 px images: a.jpg, b.jpg, c.jpg and d.jpg. I would like to merge them together to produce 2x2 mosaic image. The resulting image should be also 256x256 px. Like this: +---+---+ | a | b | +---+---+ | c | d | +---+---+ Using plain GraphicsMagick and command line this can be done with gm convert -background black \ -page +0+0 a.jpg \ -page +256+0 b.jpg \ -page +0+256 c.jpg \ -page +256+256 d.jpg \ -minify \ -mosaic output.jpg But the problem is, how to do this using GraphicsMagick within Node.js ? gm('a.jpg') .append('b.jpg') .append('c.jpg') .append('d.jpg') .write('output.jpg'

I am trying to achieve the following: 1) I have a byte array on the java side that represents an image. 2) I need to give my native code access to it. 3) The native code decodes this image using GraphicsMagick and creates a bunch of thumbnails by calling resize. It also calculates a perceptual hash of the image which is either a vector or a unint8_t array. 4) Once I return this data back to the Java side different threads will read it. The thumbnails will be uploaded to some external storage service via HTTP. My questions are: 1) What would be the most efficient way to pass the bytes from Java

GraphicsMagick 的命令概览 ---------------------------------------------------------------------------- [ convert | identify | mogrify | composite | montage | compare | display | animate | import | conjure ] convert：转换图像格式和大小，模糊， 裁剪 ，驱除污点，抖动，临近，图片上画图片，加入新图片，生成 缩略图 等。 identify：描述一个或较多图像文件的格式和特性。 mogrify：按规定尺寸***一个图像，模糊，裁剪，抖动等。Mogrify改写最初的图像文件然后写到一个不同的图像文件。 composite：根据一个图片或多个图片组合生成图片。 montage：创建一些分开的要素图像。在含有要素图像任意的装饰图片，如边框、结构、图片名称等。 compare：在算术上和视觉上评估不同的图片***其它的改造图片。 display：如果你拥有一个X server的系统，它可以按次序的显示图片 animate：利用X server显示动画图片 import：在X server或任何可见的窗口上输出图片文件。 你可以捕获单一窗口，整个的荧屏或任何荧屏的矩形部分。 conjure