How to use the diff function from jimp

index.js

GitHub: ausbitbank/stable-diffusion-discord-bot

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if (msg.attachments.length===2&&msg.attachments[0].content_type.startsWith('image/')&&msg.attachments[1].content_type.startsWith('image/')){
  var attachmentsUrls = msg.attachments.map((u)=>{return u.proxy_url})
  jimp.read(attachmentsUrls[0], (err,img1)=>{
    jimp.read(attachmentsUrls[1], (err,img2)=>{
      var distance = jimp.distance(img1,img2)
      var diff = jimp.diff(img1,img2)
      var newMsg = 'Image 1 hash: `'+img1.hash()+'`\nImage 2 hash: `'+img2.hash()+'`\nHash Distance: `'+distance+'`\nImage Difference: `'+diff.percent*100+' %`'
      diff.image.getBuffer(jimp.MIME_PNG, (err,buffer)=>{
        if(err){debugLog(err)}
        try{bot.createMessage(msg.channel.id, newMsg, {file: buffer, name: 'imgdiff.png'})}catch(err){debugLog(err)}

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karma.conf.js

GitHub: shaka-project/shaka-player

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// The threshold parameter affects the sensitivity of individual pixel
// comparisons.  This diff is only used for visual review, not for
// automated similarity checks, so the threshold setting is not so critical
// as it used to be.
const threshold = 0.10;
const diff = Jimp.diff(oldScreenshot, newScreenshot, threshold);

// Write the diff to disk.  This is used to review when there are changes.
const fullSizeDiff =
    diff.image.clone().resize(width, height, Jimp.RESIZE_BICUBIC);

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+ 10 other calls in file