JavaScript像素级图像比较库：pixelmatch
fkd27
9年前
最小，最简单，和最快的JavaScript 像素级图像比较库，主要设计用于回归测试的对比截图。
API
pixelmatch(img1, img2, output, width, height[, threshold, antialiasing])
- img1,img2— Image data of the images to compare (BufferorUint8Array).
- output— Image data to write the diff to.
- width,height— Width and height of the images. Note that all three images need to have the same dimensions.
- threshold— Matching threshold, ranges from0to1. Smaller values make the comparison more sensitive.0.005by default.
- antialiasing— Radius of antialiasing to ignore in pixels.1by default.
Compares two images, writes the output diff and returns the number of mismatched pixels.
Command line
Pixelmatch comes with a binary that works with PNG images:
pixelmatch image1.png image2.png output.png 0.005 1
Install
Install with NPM:
npm install pixelmatch
To build a browser-compatible version, clone the repository locally, then run:
npm install -g browserify browserify -s pixelmatch index.js > pixelmatch.js