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resemblejs
Advanced tools
Analyse and compare images with Javascript and HTML5. Resemble.js Demo
npm install resemblejs
bower install resemblejs
Retrieve basic analysis on image.
var api = resemble(fileData).onComplete(function(data){
console.log(data);
/*
{
red: 255,
green: 255,
blue: 255,
brightness: 255
}
*/
});
Use resemble to compare two images.
var diff = resemble(file).compareTo(file2).ignoreColors().onComplete(function(data){
console.log(data);
/*
{
misMatchPercentage : 100, // %
isSameDimensions: true, // or false
dimensionDifference: { width: 0, height: -1 }, // defined if dimensions are not the same
getImageDataUrl: function(){}
}
*/
});
Scale second image to dimensions of the first one:
//diff.useOriginalSize();
diff.scaleToSameSize();
You can also change the comparison method after the first analysis.
// diff.ignoreNothing();
// diff.ignoreColors();
diff.ignoreAntialiasing();
And change the output display style.
resemble.outputSettings({
errorColor: {
red: 255,
green: 0,
blue: 255
},
errorType: 'movement',
transparency: 0.3,
largeImageThreshold: 1200
});
// resembleControl.repaint();
By default, the comparison algorithm skips pixels when the image width or height is larger than 1200 pixels. This is there to mitigate performance issues.
You can switch this modify this behaviour by setting the largeImageThreshold
option to a different value. Set it to 0 to switch it off completely.
Created by James Cryer and the Huddle development team.
FAQs
Image analysis and comparison with HTML5
The npm package resemblejs receives a total of 37,945 weekly downloads. As such, resemblejs popularity was classified as popular.
We found that resemblejs demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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