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ssim.js - npm Package Compare versions

Comparing version 2.3.2 to 2.4.0

4

dist/ssim.js

@@ -1,2 +0,2 @@

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t=0===this.colors?1<<this.bitPP:this.colors;this.palette=new Array(t);for(var i=0;i<t;i++){var e=this.buffer.readUInt8(this.pos++),r=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++),o=this.buffer.readUInt8(this.pos++);this.palette[i]={red:n,green:r,blue:e,quad:o}}}},e.prototype.parseBGR=function(){this.pos=this.offset;try{var t="bit"+this.bitPP,i=this.width*this.height*4;this.data=new Buffer(i),this[t]()}catch(t){console.log("bit decode error:"+t)}},e.prototype.bit1=function(){for(var t=Math.ceil(this.width/8),i=t%4,e=this.height-1;e>=0;e--){for(var r=0;r<t;r++)for(var n=this.buffer.readUInt8(this.pos++),o=e*this.width*4+8*r*4,a=0;a<8&&8*r+a<this.width;a++){var h=this.palette[n>>7-a&1];this.data[o+4*a]=h.blue,this.data[o+4*a+1]=h.green,this.data[o+4*a+2]=h.red,this.data[o+4*a+3]=255}0!=i&&(this.pos+=4-i)}},e.prototype.bit4=function(){for(var t=Math.ceil(this.width/2),i=t%4,e=this.height-1;e>=0;e--){for(var r=0;r<t;r++){var n=this.buffer.readUInt8(this.pos++),o=e*this.width*4+2*r*4,a=n>>4,h=15&n,s=this.palette[a];if(this.data[o]=s.blue,this.data[o+1]=s.green,this.data[o+2]=s.red,this.data[o+3]=255,2*r+1>=this.width)break;s=this.palette[h],this.data[o+4]=s.blue,this.data[o+4+1]=s.green,this.data[o+4+2]=s.red,this.data[o+4+3]=255}0!=i&&(this.pos+=4-i)}},e.prototype.bit8=function(){for(var t=this.width%4,i=this.height-1;i>=0;i--){for(var e=0;e<this.width;e++){var r=this.buffer.readUInt8(this.pos++),n=i*this.width*4+4*e;if(r<this.palette.length){var o=this.palette[r];this.data[n]=o.blue,this.data[n+1]=o.green,this.data[n+2]=o.red,this.data[n+3]=255}else this.data[n]=255,this.data[n+1]=255,this.data[n+2]=255,this.data[n+3]=255}0!=t&&(this.pos+=4-t)}},e.prototype.bit15=function(){for(var t=this.width%3,i=parseInt("11111",2),e=i,r=this.height-1;r>=0;r--){for(var n=0;n<this.width;n++){var o=this.buffer.readUInt16LE(this.pos);this.pos+=2;var 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e=this.buffer.readUInt8(this.pos++),r=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++),o=this.buffer.readUInt8(this.pos++),a=t*this.width*4+4*i;this.data[a]=n,this.data[a+1]=r,this.data[a+2]=e,this.data[a+3]=o}this.pos+=this.width%4}},e.prototype.getData=function(){return this.data},t.exports=function(t){var i=new e(t);return{data:i.getData(),width:i.width,height:i.height}}},function(t,i){function e(t){this.buffer=t.data,this.width=t.width,this.height=t.height,this.extraBytes=this.width%4,this.rgbSize=this.height*(3*this.width+this.extraBytes),this.headerInfoSize=40,this.data=[],this.flag="BM",this.reserved=0,this.offset=54,this.fileSize=this.rgbSize+this.offset,this.planes=1,this.bitPP=24,this.compress=0,this.hr=0,this.vr=0,this.colors=0,this.importantColors=0}e.prototype.encode=function(){var t=new 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instance")}}(),h=r(0),d=h.add2d,l=h.divide2d,s=h.multiply2d,p=h.square2d,v=h.sum2d,w=r(7),y=w.conv2,m=w.imfilter,g=w.normpdf,b=w.ones,x=w.skip2d,T=w.transpose;t.exports={ssim:e}},function(t,n){t.exports={type:"deploy",version:"2.4.0"}},function(t,n){t.exports={windowSize:11,k1:.01,k2:.03,bitDepth:8,downsample:"original",ssim:"fast",maxSize:256}},function(t,n,r){r(28),r(27),t.exports=r(26)}])});

7

package.json

@@ -6,3 +6,3 @@ {

"browser": "dist/ssim.web.js",
"version": "2.3.2",
"version": "2.4.0",
"scripts": {

@@ -66,2 +66,3 @@ "commit": "git-cz",

"image-type": "^2.1.0",
"promiz": "^1.0.5",
"yargs": "^6.5.0"

@@ -80,3 +81,3 @@ },

"codeclimate-test-reporter": "^0.4.0",
"commitizen": "^2.9.0",
"commitizen": "^2.9.2",
"condition-circle": "^1.5.0",

@@ -105,3 +106,3 @@ "core-js": "^2.4.1",

"tap-dot": "^1.0.5",
"webdriverio": "^4.5.0",
"webdriverio": "^4.5.1",
"webpack": "^2.1.0-beta.27"

@@ -108,0 +109,0 @@ },

4

README.md

@@ -80,8 +80,8 @@ [![CircleCI](https://circleci.com/gh/obartra/ssim/tree/master.svg?style=shield)](https://circleci.com/gh/obartra/ssim/tree/master) [![Test Coverage](https://codeclimate.com/github/obartra/ssim/badges/coverage.svg)](https://codeclimate.com/github/obartra/ssim/coverage) [![license](https://img.shields.io/github/license/mashape/apistatus.svg)](https://opensource.org/licenses/MIT)

| Documentation | [![InchCI](https://inch-ci.org/github/obartra/ssim.svg?branch=master)](https://inch-ci.org/github/obartra/ssim) |
| Environments | ![](https://img.shields.io/badge/node-0.12-brightgreen.svg) ![](https://img.shields.io/badge/node-7.2-brightgreen.svg) [![Sauce Test Status](https://saucelabs.com/buildstatus/saucessim-master)](https://saucelabs.com/u/saucessim-master)|
| Environments | ![](https://img.shields.io/badge/node-0.12-brightgreen.svg) ![](https://img.shields.io/badge/node-7.3-brightgreen.svg) [![Sauce Test Status](https://saucelabs.com/buildstatus/saucessim-master)](https://saucelabs.com/u/saucessim-master)|
[![Sauce Browser Matrix](https://saucelabs.com/browser-matrix/saucessim-master.svg)](https://saucelabs.com/u/saucessim-master)
## 💡 Rationale
## 💡 Credits
This project is a direct port of algorithms published by [Wang, et al. 2004](/assets/ssim.pdf) on "Image Quality Assessment: From Error Visibility to Structural Similarity". The original Matlab scripts are available [here](https://ece.uwaterloo.ca/~z70wang/research/iwssim/) with their datasets. To view the steps taken to validate `ssim.js` results, check the [wiki](https://github.com/obartra/ssim/wiki/Results-Validation).

8

src/matlab/rgb2gray.js

@@ -13,3 +13,5 @@ /**

* @method luma
* @param {Number[]} subpixels - The different pixels to use in the following order: r, g, b
* @param {Number} r - The red pixel value
* @param {Number} g - The green pixel value
* @param {Number} b - The blue pixel value
* @returns {Number} lumaValue - The value of the luminance for the [r,g,b] pixel

@@ -20,3 +22,3 @@ * @private

*/
function luma([r, g, b]) {
function luma(r, g, b) {
return Math.round(0.29894 * r + 0.58704 * g + 0.11402 * b);

@@ -46,3 +48,3 @@ }

data[grayIndex] = luma([d[imgIndex], d[imgIndex + 1], d[imgIndex + 2], d[imgIndex + 3]]);
data[grayIndex] = luma(d[imgIndex], d[imgIndex + 1], d[imgIndex + 2], d[imgIndex + 3]);
}

@@ -49,0 +51,0 @@ }

23

src/readpixels.js

@@ -41,5 +41,3 @@ const fs = require('fs');

return new Promise((resolve) => {
resolve(imageData);
});
return imageData;
}

@@ -52,2 +50,3 @@

* @param {string} url - url to load image data from
* @param {function} P - The Promise definition, must be a valid Promises/A+ implementation
* @returns {Promise} promise - A promise that resolves with the image 3D matrix

@@ -58,4 +57,4 @@ * @private

*/
function loadUrl(url) {
return new Promise((resolve, reject) => {
function loadUrl(url, P) {
return new P((resolve, reject) => {
http

@@ -78,2 +77,3 @@ .get(url)

* @param {string} path - File path to load image data from
* @param {function} P - The Promise definition, must be a valid Promises/A+ implementation
* @returns {Promise} promise - A promise that resolves with the image 3D matrix

@@ -84,4 +84,4 @@ * @private

*/
function loadFs(path) {
return new Promise((resolve, reject) => {
function loadFs(path, P) {
return new P((resolve, reject) => {
fs.readFile(path, (err, data) => {

@@ -103,2 +103,3 @@ if (err) {

* @param {string|Buffer} url - A url, file path or buffer to use to load the image data
* @param {function} P - The Promise definition, must be a valid Promises/A+ implementation
* @param {number} [limit=0] - A limit that, if set and both dimensions (width / height) surpass it,

@@ -111,11 +112,11 @@ * will downsize the image to that size on the smallest dimension.

*/
function readpixels(url, limit = 0) {
function readpixels(url, P, limit = 0) {
let bufferPromise;
if (Buffer.isBuffer(url)) {
bufferPromise = Promise.resolve(url);
bufferPromise = P.resolve(url);
} else if (url.indexOf('http://') === 0 || url.indexOf('https://') === 0) {
bufferPromise = loadUrl(url);
bufferPromise = loadUrl(url, P);
} else {
bufferPromise = loadFs(url);
bufferPromise = loadFs(url, P);
}

@@ -122,0 +123,0 @@ return bufferPromise

5

src/readpixels.web.js

@@ -9,2 +9,3 @@ /* eslint-env browser */

* @param {string} url - The url to use to load the image data
* @param {function} P - The Promise definition, must be a valid Promises/A+ implementation
* @param {number} [limit=0] - A limit that, if set and both dimensions (width / height) surpass it,

@@ -16,3 +17,3 @@ * will downsize the image to that size on the smallest dimension.

*/
function readpixels(url, limit = 0) {
function readpixels(url, P, limit = 0) {
const img = new Image();

@@ -22,3 +23,3 @@ const canvas = document.createElement('canvas');

return new Promise((resolve, reject) => {
return new P((resolve, reject) => {
img.onload = () => {

@@ -25,0 +26,0 @@ const { width, height } = getLimitDimensions(img.width, img.height, limit);

2

version.js

@@ -1,1 +0,1 @@

module.exports = { type: 'deploy', "version": "2.3.2"};
module.exports = { type: 'deploy', "version": "2.4.0"};
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