vue component for multiple image comparison
vue-image-diff
vue component for multiple image comparison.
currently supported only 8bit jpg and png format.
Web-App: https://github.com/whwnsdlr1/image-diff
jsfiddle1: https://jsfiddle.net/whwnsdlr1/xgz21e95/
jsfiddle2: https://jsfiddle.net/whwnsdlr1/84bkq2hy/
Usage
how to include component
in Vue Project
<template>
...
<vue-image-diff :data="data" :options="options" :options-tool-bar="optionsToolBar" />
...
</template>
<script>
import VueImageDiff from 'vue-image-diff'
export default {
...
components: {
'vue-image-diff': VueImageDiff
}
...
}
</script>
in html
<body>
<script src="vue.js"></script><!-- include vue.js first! -->
<script src="VueImageDiff.js"></script>
...
<vue-image-diff :data=data :options=options :options-tool-bar=optionsToolBar />
...
</body>
arguments structure
data is array of object.
data = [
{
name: 'korea Mountains', // String: text to show overlay region
blob: blob, // Blob: ImageBlob to show
ext: 'jpg' // String: 'jpg' or 'png'
params: {author: 'fxgsell'}, // Object, (optional): default value is {}. text to show overlay region
id: id // String, (optional): default value is created by uuid4(). unique id
}
]
options is object
options = {
coord: {
x: 0, // Number, (optional): default value is 0. coordinate x
y: 0 // Number, (optional): default value is 0. coordinate y
},
zoom: 1, // Number, (optional): default value is calculate by windows. zoom, scale value. 1 is original scale
voi: {
windowCenter: 127, // Number, (optional): default value is 127. range (0, 255]. adjust brightness
windowWidth: 256 // Number, (optional): default value is 256. range (1, 256]. adjust contrast
},
predefinedImageSize: {
width: undefined, // Number or undefined, (optional): default value in undefined. width to be resized. if not set, other images are resized based on the first image size.
height: undefined // Number or undefined, (optional): default value in undefined. height to be resized. if not set, other images are resized based on the first image size.
},
diff: {
activate: false, // Bool, (optional): default value is false. flag to show diff ovelary
reference: {
id: undefined, // String or undefined, (optional): default value is undefined. base image to diff. if not set, it is selected as the first image.
},
tolerance: 1, // Number, (optional): default value is 1. range [1, 441]. if difference value(Mean Square Error) is greater than or equal tolerance, pixel is set difference-tag. opposite, set same-tag less than tolerance. 
opacity: 0.7, // Number, (optional): default value is 0.7. range (0, 1). opacity of diff overlay
colors: {
same: new Uint8ClampedArray([0, 0, 255]), // Array, (optional): default value is [0, 0, 255]. color rgb of same-tag pixel
diff: new Uint8ClampedArray([255, 0, 0]) // Array, (optional): default value is [0, 0, 255]. color rgb of diff-tag pixel
}
},
style: {
borderWidth: 1, // Number, (optional): default value is [1, infty). border width between frames.
borderColor: new Uint8ClampedArray([255, 0, 0]), // Array, (optional): default value is [255, 0, 0]. color rgb of border
showOverlayText: true, // Bool, (optional): default value is true. flag to show overlay text
frameRowCount: 3 // Number or undefined, (optional): default value is undefined. range [1, infty). frame row count. if not set, calcuate by data length.
}
}
optionsToolBar is object
optToolBar = {
show: true, // Bool, (optional)
pan: {
show: true, // Bool, (optional)
disabled: false // Bool, (optional)
},
zoom: {
show: true, // Bool, (optional)
disabled: false // Bool, (optional)
},
diff: {
show: true, // Bool, (optional)
ref: {
show: true // Bool, (optional)
},
tolerance: {
show: true // Bool, (optional)
}
}
}
functions
- open Control panel: openControlPanel()
Control
- mouse & touch drag - panning
- mouse wheel & pinch to zoom - zoom in / out
- mouse doubleclick - change reference image for diff
Browser support - (tested)
- Google Chrome 77+
- Google Chrome 77+ on Android 9+
- Mozilla FireFox 68+
Project setup
Build
build project as below
git clone https://github.com/whwnsdlr1/vue-image-diff
cd vue-image-diff
yarn run build