ssim.js - npm Package Compare versions

Comparing version 3.0.0 to 3.1.0

dist/ssim.js

@@ -1,2 +0,131 @@
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a=(o&r)/r*255|0,h=(o>>5&r)/r*255|0,s=(o>>10&r)/r*255|0,f=o>>15?255:0,u=e*this.width*4+4*n;this.data[u]=s,this.data[u+1]=h,this.data[u+2]=a,this.data[u+3]=f}this.pos+=t}},r.prototype.bit16=function(){for(var t=this.width%3,i=parseInt("11111",2),r=i,e=parseInt("111111",2),n=e,o=this.height-1;o>=0;o--){for(var a=0;a<this.width;a++){var h=this.buffer.readUInt16LE(this.pos);this.pos+=2;var s=255,f=(h&r)/r*255|0,u=(h>>5&n)/n*255|0,d=(h>>11)/r*255|0,c=o*this.width*4+4*a;this.data[c]=d,this.data[c+1]=u,this.data[c+2]=f,this.data[c+3]=s}this.pos+=t}},r.prototype.bit24=function(){for(var t=this.height-1;t>=0;t--){for(var i=0;i<this.width;i++){var r=this.buffer.readUInt8(this.pos++),e=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++),o=t*this.width*4+4*i;this.data[o]=n,this.data[o+1]=e,this.data[o+2]=r,this.data[o+3]=255}this.pos+=this.width%4}},r.prototype.bit32=function(){for(var t=this.height-1;t>=0;t--){for(var i=0;i<this.width;i++){var r=this.buffer.readUInt8(this.pos++),e=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]=e,this.data[a+2]=r,this.data[a+3]=o}this.pos+=this.width%4}},r.prototype.getData=function(){return this.data},t.exports=function(t){var i=new r(t);return{data:i.getData(),width:i.width,height:i.height}}},function(t,i){function r(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}r.prototype.encode=function(){var t=new 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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Implements all ssim-specific logic.
+ *
+ * Reproduces the original SSIM matlab scripts. For a direct comparison you may want to check the
+ * scripts contained within `/assets`
+ *
+ * @namespace ssim
+ */
+var math_1 = require("./math");
+var matlab_1 = require("./matlab");
+/**
+ * Generates a SSIM map based on two input image matrices. For images greater than 512 pixels, it
+ * will downsample by default (unless `options.downsample` is set to falsy).
+ *
+ * Images must be a 2-Dimensional grayscale image
+ *
+ * This method produces the same exact output than `assets/ssim.m` when running on Matlab. It's
+ * mathematically equivalent but it is not a line-by-line port. If you want a line-by-line port
+ * check `originalSsim`. Several performance optimizations have been made here to achieve greater
+ * performance.
+ *
+ * @method ssim
+ * @param {Matrix} pixels1 - The reference matrix
+ * @param {Matrix} pixels2 - The second matrix to compare against
+ * @param {Options} options - The input options parameter
+ * @returns {Matrix} ssim_map - A matrix containing the map of computed SSIMs
+ * @public
+ * @memberOf ssim
+ */
+function ssim(pixels1, pixels2, options) {
+    var w = matlab_1.normpdf(getRange(options.windowSize), 0, 1.5);
+    var L = Math.pow(2, options.bitDepth) - 1;
+    var c1 = Math.pow((options.k1 * L), 2);
+    var c2 = Math.pow((options.k2 * L), 2);
+    w = math_1.divide2d(w, math_1.sum2d(w));
+    var wt = matlab_1.transpose(w);
+    var μ1 = matlab_1.conv2(pixels1, w, wt, "valid");
+    var μ2 = matlab_1.conv2(pixels2, w, wt, "valid");
+    var μ1Sq = math_1.square2d(μ1);
+    var μ2Sq = math_1.square2d(μ2);
+    var μ12 = math_1.multiply2d(μ1, μ2);
+    var pixels1Sq = math_1.square2d(pixels1);
+    var pixels2Sq = math_1.square2d(pixels2);
+    var σ1Sq = math_1.subtract2d(matlab_1.conv2(pixels1Sq, w, wt, "valid"), μ1Sq);
+    var σ2Sq = math_1.subtract2d(matlab_1.conv2(pixels2Sq, w, wt, "valid"), μ2Sq);
+    var σ12 = math_1.subtract2d(matlab_1.conv2(math_1.multiply2d(pixels1, pixels2), w, wt, "valid"), μ12);
+    if (c1 > 0 && c2 > 0) {
+        return genSSIM(μ12, σ12, μ1Sq, μ2Sq, σ1Sq, σ2Sq, c1, c2);
+    }
+    return genUQI(μ12, σ12, μ1Sq, μ2Sq, σ1Sq, σ2Sq);
+}
+exports.ssim = ssim;
+/**
+ * Generates a range of distances of size `2n+1` with increments of 1 and centered at 0.
+ *
+ * @example `getRange(2) => [2 1 0 1 2]
+ * @method getRange
+ * @param {Number} size - The maximum distance from the center
+ * @returns {Matrix} out - The generated vector
+ * @private
+ * @memberOf ssim
+ */
+function getRange(size) {
+    var offset = Math.floor(size / 2);
+    var data = new Array(offset * 2 + 1);
+    for (var x = -offset; x <= offset; x++) {
+        data[x + offset] = Math.abs(x);
+    }
+    return {
+        data: data,
+        width: data.length,
+        height: 1
+    };
+}
+/**
+ * Generates the ssim_map based on the intermediate values of the convolutions of the input with the
+ * gaussian filter.
+ *
+ * These methods apply when K1 or K2 are not 0 (non UQI)
+ *
+ * @method genSSIM
+ * @param {Matrix} μ12 - The cell-by cell multiplication of both images convolved
+ * with the gaussian filter
+ * @param {Matrix} σ12 - The convolution of cell-by cell multiplication of both
+ * images minus μ12
+ * @param {Matrix} μ1Sq - The convolution of image1 with the gaussian filter squared
+ * @param {Matrix} μ2Sq - The convolution of image2 with the gaussian filter squared
+ * @param {Matrix} σ1Sq - The convolution of image1^2, minus μ1Sq
+ * @param {Matrix} σ2Sq - The convolution of image2^2, minus μ2Sq
+ * @param {Number} c1 - The first stability constant
+ * @param {Number} c2 - The second stability constant
+ * @returns {Matrix} ssim_map - The generated map of SSIM values at each window
+ * @private
+ * @memberOf ssim
+ */
+function genSSIM(μ12, σ12, μ1Sq, μ2Sq, σ1Sq, σ2Sq, c1, c2) {
+    var num1 = math_1.add2d(math_1.multiply2d(μ12, 2), c1);
+    var num2 = math_1.add2d(math_1.multiply2d(σ12, 2), c2);
+    var denom1 = math_1.add2d(math_1.add2d(μ1Sq, μ2Sq), c1);
+    var denom2 = math_1.add2d(math_1.add2d(σ1Sq, σ2Sq), c2);
+    return math_1.divide2d(math_1.multiply2d(num1, num2), math_1.multiply2d(denom1, denom2));
+}
+/**
+ * Generates the Universal Quality Index (UQI) ssim_map based on the intermediate values of the
+ * convolutions of the input with the gaussian filter.
+ *
+ * These methods apply when K1 or K2 are 0 (UQI)
+ *
+ * @method genUQI
+ * @param {Matrix} μ12 - The cell-by cell multiplication of both images convolved
+ * with the gaussian filter
+ * @param {Matrix} σ12 - The convolution of cell-by cell multiplication of both
+ * images minus μ12
+ * @param {Matrix} μ1Sq - The convolution of image1 with the gaussian filter squared
+ * @param {Matrix} μ2Sq - The convolution of image2 with the gaussian filter squared
+ * @param {Matrix} σ1Sq - The convolution of image1^2, minus μ1Sq
+ * @param {Matrix} σ2Sq - The convolution of image2^2, minus μ2Sq
+ * @returns {Matrix} ssim_map - The generated map of SSIM values at each window
+ * @private
+ * @memberOf ssim
+ */
+function genUQI(μ12, σ12, μ1Sq, μ2Sq, σ1Sq, σ2Sq) {
+    var numerator1 = math_1.multiply2d(μ12, 2);
+    var numerator2 = math_1.multiply2d(σ12, 2);
+    var denominator1 = math_1.add2d(μ1Sq, μ2Sq);
+    var denominator2 = math_1.add2d(σ1Sq, σ2Sq);
+    return math_1.divide2d(math_1.multiply2d(numerator1, numerator2), math_1.multiply2d(denominator1, denominator2));
+}
+//# sourceMappingURL=ssim.js.map

dist/ssim.web.js

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o=0;o<t.width;o++)n[(d+e)*t.width+o]=r.data[i.mod(d,r.height)*t.width+o];return{data:n,width:t.width,height:a}}e.padarray=function(t,e,r,i){var d=e[0],o=e[1];return t.height>=d&&t.width>=o?function(t,e){for(var r=e[0],i=e[1],a=t.width+2*i,n=t.height+2*r,d=new Array(a*n),o=-r;o<0;o++){for(var h=-i;h<0;h++)d[(o+r)*a+h+i]=t.data[(Math.abs(o)-1)*t.width+Math.abs(h)-1];for(h=0;h<t.width;h++)d[(o+r)*a+h+i]=t.data[(Math.abs(o)-1)*t.width+h];for(h=t.width;h<t.width+i;h++)d[(o+r)*a+h+i]=t.data[(Math.abs(o)-1)*t.width+2*t.width-h-1]}for(o=0;o<t.height;o++){for(h=-i;h<0;h++)d[(o+r)*a+h+i]=t.data[o*t.width+Math.abs(h)-1];for(h=0;h<t.width;h++)d[(o+r)*a+h+i]=t.data[o*t.width+h];for(h=t.width;h<t.width+i;h++)d[(o+r)*a+h+i]=t.data[o*t.width+2*t.width-h-1]}for(o=t.height;o<t.height+r;o++){for(h=-i;h<0;h++)d[(o+r)*a+h+i]=t.data[(2*t.height-o-1)*t.width+Math.abs(h)-1];for(h=0;h<t.width;h++)d[(o+r)*a+h+i]=t.data[(2*t.height-o-1)*t.width+h];for(h=t.width;h<t.width+i;h++)d[(o+r)*a+h+i]=t.data[(2*t.height-o-1)*t.width+2*t.width-h-1]}return{data:d,width:a,height:n}}(t,[d,o]):n(a(t,o),d)}},function(t,e,r){"use strict";var i=this&&this.__assign||function(){return(i=Object.assign||function(t){for(var e,r=1,i=arguments.length;r<i;r++)for(var a in e=arguments[r])Object.prototype.hasOwnProperty.call(e,a)&&(t[a]=e[a]);return t}).apply(this,arguments)};Object.defineProperty(e,"__esModule",{value:!0});var a=r(1),n=r(0),d=r(17),o=r(18),h=r(19),u=r(20),f=r(21),l={fast:d.ssim,original:o.originalSsim,bezkrovny:h.bezkrovnySsim};function c(t){var e=i(i({},f.defaults),t);return function(t){if(Object.keys(t).forEach((function(t){if(!(t in f.defaults))throw new Error('"'+t+'" is not a valid option')})),"k1"in t&&("number"!=typeof t.k1||t.k1<0))throw new Error("Invalid k1 value. Default is "+f.defaults.k1);if("k2"in t&&("number"!=typeof t.k2||t.k2<0))throw new Error("Invalid k2 value. Default is "+f.defaults.k2);if(!(t.ssim in l))throw new Error("Invalid ssim option (use: "+Object.keys(l).join(", ")+")")}(e),e}function s(t,e,r){var i=(new Date).getTime(),d=function(t){var e=t[0],r=t[1],i=t[2];return l[i.ssim](e,r,i)}(function(t){var e=t[0],r=t[1],i=t[2],a=u.downsample([e,r],i);return[a[0],a[1],i]}(function(t){var e=t[0],r=t[1],i=t[2];return[a.rgb2gray(e),a.rgb2gray(r),i]}(function(t){var e=t[0],r=t[1],i=t[2];if(e.width!==r.width||e.height!==r.height)throw new Error("Image dimensions do not match");return[e,r,i]}([t,e,c(r)]))));return{ssim_map:d,mssim:n.mean2d(d),performance:(new Date).getTime()-i}}e.ssim=s,e.default=s},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(0);e.fspecial=function(t,e,r){void 0===e&&(e=3),void 0===r&&(r=1.5);var a=function(t,e){for(var r=t.data,i=t.width,a=t.height,n=new Array(r.length),d=0;d<r.length;d++)n[d]=Math.exp(-r[d]/(2*Math.pow(e,2)));return{data:n,width:i,height:a}}(function(t){for(var e=2*t+1,r=new Array(Math.pow(e,2)),i=0;i<e;i++)for(var a=0;a<e;a++)r[i*e+a]=Math.pow(i-t,2)+Math.pow(a-t,2);return{data:r,width:e,height:e}}(e=(e-1)/2),r),n=i.sum2d(a);return i.divide2d(a,n)}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(8),a=r(9),n=r(0),d=r(7);e.imfilter=function(t,e,r,o){return void 0===r&&(r="symmetric"),void 0===o&&(o="same"),t=function(t,e,r,d){if(t=a.padarray(t,n.floor([e/2,r/2]),d),0===i.mod(e,2)&&(t.data=t.data.slice(0,-t.width),t.height--),0===i.mod(r,2)){for(var o=[],h=0;h<t.data.length;h++)(h+1)%t.width!=0&&o.push(t.data[h]);t.data=o,t.width--}return t}(t,e.width,e.height,r),o=function(t){return"same"===t&&(t="valid"),t}(o),d.filter2(e,t,o)}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.normpdf=function(t,e,r){var i=t.data,a=t.width,n=t.height;void 0===e&&(e=0),void 0===r&&(r=1);for(var d=new Array(i.length),o=0;o<i.length;o++){var h=(i[o]-e)/r;d[o]=Math.exp(-Math.pow(h,2)/2)/(2.5066282746310007*r)}return{data:d,width:a,height:n}}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.rgb2gray=function(t){for(var e,r,i,a=t.data,n=t.width,d=t.height,o=new Array(n*d),h=0;h<d;h++)for(var u=0;u<n;u++){var f=u+h*n,l=4*f;o[f]=(e=a[l],r=a[l+1],i=a[l+2],Math.round(.29894*e+.58704*r+.11402*i))}return{data:o,width:n,height:d}}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.skip2d=function(t,e,r){for(var i=e[0],a=e[1],n=e[2],d=r[0],o=r[1],h=r[2],u=Math.ceil((h-d)/o),f=Math.ceil((n-i)/a),l=new Array(u*f),c=0;c<f;c++)for(var s=0;s<u;s++){var v=i+c*a,w=d+s*o;l[c*u+s]=t.data[v*t.width+w]}return{data:l,width:u,height:f}}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.transpose=function(t){for(var e=t.data,r=t.width,i=t.height,a=new Array(r*i),n=0;n<i;n++)for(var d=0;d<r;d++)a[d*i+n]=e[n*r+d];return{data:a,height:r,width:i}}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(0),a=r(1);e.ssim=function(t,e,r){var n=a.normpdf(function(t){for(var e=Math.floor(t/2),r=new Array(2*e+1),i=-e;i<=e;i++)r[i+e]=Math.abs(i);return{data:r,width:r.length,height:1}}(r.windowSize),0,1.5),d=Math.pow(2,r.bitDepth)-1,o=Math.pow(r.k1*d,2),h=Math.pow(r.k2*d,2);n=i.divide2d(n,i.sum2d(n));var u=a.transpose(n),f=a.conv2(t,n,u,"valid"),l=a.conv2(e,n,u,"valid"),c=i.square2d(f),s=i.square2d(l),v=i.multiply2d(f,l),w=i.square2d(t),g=i.square2d(e),p=i.subtract2d(a.conv2(w,n,u,"valid"),c),y=i.subtract2d(a.conv2(g,n,u,"valid"),s),m=i.subtract2d(a.conv2(i.multiply2d(t,e),n,u,"valid"),v);return o>0&&h>0?function(t,e,r,a,n,d,o,h){var u=i.add2d(i.multiply2d(t,2),o),f=i.add2d(i.multiply2d(e,2),h),l=i.add2d(i.add2d(r,a),o),c=i.add2d(i.add2d(n,d),h);return i.divide2d(i.multiply2d(u,f),i.multiply2d(l,c))}(v,m,c,s,p,y,o,h):function(t,e,r,a,n,d){var o=i.multiply2d(t,2),h=i.multiply2d(e,2),u=i.add2d(r,a),f=i.add2d(n,d);return i.divide2d(i.multiply2d(o,h),i.multiply2d(u,f))}(v,m,c,s,p,y)}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(0),a=r(1);e.originalSsim=function(t,e,r){var n=a.fspecial("gaussian",r.windowSize,1.5),d=Math.pow(2,r.bitDepth)-1,o=Math.pow(r.k1*d,2),h=Math.pow(r.k2*d,2);n=i.divide2d(n,i.sum2d(n));var u=a.filter2(n,t,"valid"),f=a.filter2(n,e,"valid"),l=i.square2d(u),c=i.square2d(f),s=i.multiply2d(u,f),v=i.square2d(t),w=i.square2d(e),g=i.subtract2d(a.filter2(n,v,"valid"),l),p=i.subtract2d(a.filter2(n,w,"valid"),c),y=i.subtract2d(a.filter2(n,i.multiply2d(t,e),"valid"),s);if(o>0&&h>0){var m=i.add2d(i.multiply2d(s,2),o),b=i.add2d(i.multiply2d(y,2),h),M=i.add2d(i.add2d(l,c),o),_=i.add2d(i.add2d(g,p),h);return i.divide2d(i.multiply2d(m,b),i.multiply2d(M,_))}var j=i.multiply2d(s,2),O=i.multiply2d(y,2),P=i.add2d(l,c),k=i.add2d(g,p);return i.divide2d(i.multiply2d(j,O),i.multiply2d(P,k))}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(0),a=r(1);function n(t,e,r){var a=t.data,n=e.data,d=r.bitDepth,o=r.k1,h=r.k2,u=Math.pow(2,d)-1,f=Math.pow(o*u,2),l=Math.pow(h*u,2),c=i.average(a),s=i.average(n),v=i.variance(a,c),w=i.variance(n,s);return(2*c*s+f)*(2*i.covariance(a,n,c,s)+l)/((Math.pow(c,2)+Math.pow(s,2)+f)*(v+w+l))}e.bezkrovnySsim=function(t,e,r){for(var i=r.windowSize,d=Math.floor(t.width/i),o=Math.floor(t.height/i),h=new Array(d*o),u=0,f=0;f<t.height;f+=i)for(var l=0;l<t.width;l+=i){var c=Math.min(i,t.width-l),s=Math.min(i,t.height-f),v=a.sub(t,l,s,f,c),w=a.sub(e,l,s,f,c);h[u++]=n(v,w,r)}return{data:h,width:d,height:o}}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=r(0),a=r(1);function n(t,e,r){var i=a.imfilter(t,e,"symmetric","same");return a.skip2d(i,[0,r,i.height],[0,r,i.width])}e.downsample=function(t,e){return"original"===e.downsample?function(t,e,r){void 0===r&&(r=256);var d=Math.min(t.width,e.height)/r,o=Math.round(d);if(o>1){var h=a.ones(o);t=n(t,h=i.divide2d(h,i.sum2d(h)),o),e=n(e,h,o)}return[t,e]}(t[0],t[1],e.maxSize):t}},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.defaults={windowSize:11,k1:.01,k2:.03,bitDepth:8,downsample:"original",ssim:"fast",maxSize:256}}])}));
+//# sourceMappingURL=ssim.web.js.map

package.json

 {
   "name": "ssim.js",
   "description": "JavaScript implementation of the SSIM algorithm",
-  "main": "dist/ssim.js",
-  "browser": "dist/ssim.web.js",
-  "version": "3.0.0",
+  "main": "dist/index",
+  "typings": "dist/index",
+  "browser": "dist/ssim.web",
+  "version": "3.1.0",
   "scripts": {
+    "format-all": "git ls-files {src,spec}*.{js,json} | xargs yarn format",
+    "format": "prettier --write --single-quote --no-semi --trailing-comma es5",
     "commit": "git-cz",
-    "cover": "babel-istanbul cover blue-tape spec/unit/{*,**/*}.spec.js",
-    "cover:check": "babel-istanbul check",
-    "test": "blue-tape spec/unit/{*,**/*}.spec.js | tap-dot",
-    "test:perf": "blue-tape spec/perf/{*,**/*}.spec.js",
-    "test:web": "node spec/web/sauce.js",
-    "e2e": "npm-run-all --parallel e2e:*",
-    "e2e:live": "blue-tape spec/e2e_dist/live.spec.js | tap-dot || exit 1",
-    "e2e:ivc": "blue-tape spec/e2e_dist/ivc.spec.js | tap-dot || exit 1",
-    "test:watch": "nodemon node_modules/.bin/blue-tape spec/unit/{*,**/*}.spec.js",
-    "docs": "jsdoc --pedantic -c .jsdoc . --readme README.md",
-    "docs:check": "./ci/doc.sh",
+    "test": "jest --testTimeout=500000",
     "lint": "eslint .",
-    "build": "npm-run-all --parallel build:*",
-    "build:node": "webpack",
-    "build:web": "webpack --config webpack.config.web.js",
-    "build:test": "babel spec/helpers --out-dir spec/helpers_dist/ && babel spec/e2e --out-dir spec/e2e_dist/ && webpack --config webpack.config.web.test.js",
-    "watch": "webpack --watch",
-    "codeclimate": "cat ./coverage/lcov.info | codeclimate-test-reporter",
-    "semantic-release": "semantic-release pre && npm publish && semantic-release post"
+    "build": "rm -rf dist && tsc && webpack --mode=production",
+    "semantic-release": "semantic-release"
   },
@@ -48,5 +36,2 @@ "repository": {
   },
-  "bin": {
-    "ssim": "./cli.js"
-  },
   "files": [
@@ -57,53 +42,37 @@ "package.json",
     "src",
-    "version.js",
-    "cli.js",
     "dist"
   ],
   "homepage": "https://github.com/obartra/ssim#readme",
-  "dependencies": {
-    "bmp-js": "^0.0.3",
-    "canvas": "^1.6.2",
-    "image-type": "^3.0.0",
-    "promiz": "^1.0.5",
-    "yargs": "^6.6.0"
-  },
   "devDependencies": {
-    "@bubltechnology/customizable-commit-analyzer": "^1.0.0",
-    "babel-cli": "^6.22.2",
-    "babel-core": "^6.22.1",
-    "babel-istanbul": "^0.12.1",
-    "babel-loader": "^6.2.10",
-    "babel-preset-es2015": "^6.22.0",
-    "babel-preset-es2016": "^6.22.0",
-    "benchmark": "^2.1.3",
-    "blue-tape": "^1.0.0",
-    "codeclimate-test-reporter": "^0.4.0",
-    "commitizen": "^2.9.5",
-    "condition-circle": "^1.5.0",
-    "core-js": "^2.4.1",
-    "cz-conventional-changelog": "^1.2.0",
-    "eslint": "^3.14.0",
-    "eslint-config-airbnb": "^14.0.0",
-    "eslint-plugin-import": "^2.2.0",
-    "eslint-plugin-jsx-a11y": "^3.0.2",
-    "eslint-plugin-react": "^6.9.0",
-    "http-server": "^0.9.0",
-    "inchjs": "^0.4.1",
-    "jsdoc": "^3.4.3",
-    "json-loader": "^0.5.4",
-    "ngrok": "^2.2.5",
-    "nodemon": "^1.11.0",
-    "npm-install-version": "^6.0.1",
-    "npm-run-all": "^4.0.1",
-    "saucelabs": "^1.3.0",
-    "semantic-release": "^6.3.2",
-    "semantic-release-cli": "^3.0.3",
-    "tap-dot": "^1.0.5",
-    "webdriverio": "^4.6.1",
-    "webpack": "^2.1.0-beta.27"
+    "@semantic-release/commit-analyzer": "6.3.3",
+    "@semantic-release/github": "5.5.5",
+    "@semantic-release/npm": "5.3.5",
+    "@types/jest": "24.0.25",
+    "@types/node": "13.1.1",
+    "benchmark": "2.1.4",
+    "bmp-js": "0.1.0",
+    "canvas": "2.6.1",
+    "commitizen": "4.0.3",
+    "condition-circle": "2.0.2",
+    "core-js": "3.6.1",
+    "cz-conventional-changelog": "3.0.2",
+    "eslint": "6.8.0",
+    "eslint-config-airbnb": "18.0.1",
+    "eslint-config-prettier": "6.9.0",
+    "eslint-plugin-import": "2.19.1",
+    "eslint-plugin-jsx-a11y": "6.2.3",
+    "eslint-plugin-react": "7.17.0",
+    "image-type": "4.1.0",
+    "jest": "24.9.0",
+    "nodemon": "2.0.2",
+    "prettier": "1.19.1",
+    "request": "2.88.0",
+    "semantic-release": "15.14.0",
+    "semantic-release-cli": "5.2.3",
+    "ts-jest": "24.2.0",
+    "ts-loader": "6.2.1",
+    "typescript": "3.7.4",
+    "webpack": "4.41.5",
+    "webpack-cli": "3.3.10"
   },
-  "release": {
-    "verifyConditions": "condition-circle",
-    "analyzeCommits": "@bubltechnology/customizable-commit-analyzer"
-  },
   "config": {
@@ -114,2 +83,2 @@ "commitizen": {
   }
-}
+}

README.md

@@ -1,2 +0,2 @@
-[![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)
+[![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) [![npm](https://img.shields.io/npm/v/ssim.js.svg)](https://www.npmjs.com/package/ssim.js)
 
@@ -9,10 +9,10 @@ # SSIM.JS
 
-|                                       |                                       |                                       |
-| ------------------------------------  | ------------------------------------- | ------------------------------------- |
+|                                                                                            |                                                                                            |                                                                                            |
+| ------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------ |
 | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q1.gif)    | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q0988.gif) | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q0913.gif) |
-| Original, MSE = 0, SSIM = 1           | MSE = 144, SSIM = 0.988               | MSE = 144, SSIM = 0.913               |
+| Original, MSE = 0, SSIM = 1                                                                | MSE = 144, SSIM = 0.988                                                                    | MSE = 144, SSIM = 0.913                                                                    |
 | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q0840.gif) | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q0694.gif) | ![](https://raw.githubusercontent.com/obartra/ssim/master/spec/samples/einstein/Q0662.gif) |
-| MSE = 144, SSIM = 0.840               | MSE = 144, SSIM = 0.694               | MSE = 142, SSIM = 0.662               |
+| MSE = 144, SSIM = 0.840                                                                    | MSE = 144, SSIM = 0.694                                                                    | MSE = 142, SSIM = 0.662                                                                    |
 
-*Table extracted from http://www.cns.nyu.edu/~lcv/ssim/*
+_Table extracted from http://www.cns.nyu.edu/~lcv/ssim/_
 
@@ -25,44 +25,23 @@ ## 🖥 Install
 
-This will install the node, web and CLI versions.
+You can also use the web version directly from [unpkg](https://unpkg.com)'s CDN: `https://unpkg.com/ssim.js@{{version}}/dist/ssim.web.js`.
 
-Install it globally (`npm install -g`) to make `ssim` available on your path.
-
-You can also use the web version directly from [unpkg](https://unpkg.com)'s CDN: `https://unpkg.com/ssim.js@{{semver}}`.
-
 ## 📝 Usage
 
-[Playground](https://ssim-comparison.gomix.me/) for Node and Web versions.
+Check out the [playground](https://ssim-comparison.gomix.me/) for node and web usage examples.
 
-Node:
+SSIM.js takes in 2 image buffers and optional options parameter. You can find all options available [here](https://github.com/obartra/ssim/wiki/Usage#options).
 
-```javascript
+For examples on how to implement image loading strategies for both node and the web, check out [this wiki page](https://github.com/obartra/ssim/wiki/Node-and-Browsers).
 
-import ssim from 'ssim.js';
+```js
+import ssim from "ssim.js";
 
-ssim('./img1.jpg', './img2.jpg')
-  .then(({ mssim, performance }) => console.log(`SSIM: ${mssim} (${performance}ms)`))
-  .catch(err => console.error('Error generating SSIM', err));
-```
+const img1 = loadImage("./img1.jpg");
+const img2 = loadImage("./img2.jpg");
 
-Browser:
+const { mssim, performance } = ssim(img1, img2);
 
-```html
-  <script src="https://unpkg.com/ssim.js@^2.0.0"></script>
-  <script>
-    ssim('/img1.jpg', '/img2.jpg')
-      .then(function(out) {
-        console.log('SSIM:', out.mssim, '(', out.performance, 'ms)');
-      })
-      .catch(function(err) {
-        console.error('Error generating SSIM', err);
-      });
-  </script>
+console.log(`SSIM: ${mssim} (${performance}ms)`);
 ```
 
-CLI:
-
-```shell
-$ ./node_modules/.bin/ssim ./img1.jpg ./img2.jpg
-```
-
 ## 📖 Documentation
@@ -72,18 +51,13 @@
 
-The code is fully documented and a hosted version is available [here](https://doclets.io/obartra/ssim/master).
+The code is fully documented but feel free to create an issue [here](https://github.com/obartra/ssim/issues/new) if you have any questions.
 
 ## 🏁 Metrics
 
-| Process       | Status    |
-|---------------|-----------|
-| Code Quality  | [![Code Climate](https://codeclimate.com/github/obartra/ssim/badges/gpa.svg)](https://codeclimate.com/github/obartra/ssim) [![Issue Count](https://codeclimate.com/github/obartra/ssim/badges/issue_count.svg)](https://codeclimate.com/github/obartra/ssim) |
-| Versioning    | [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/) [![npm](https://img.shields.io/npm/v/ssim.js.svg)](https://www.npmjs.com/package/ssim.js) |
-| Dependencies  | [![Known Vulnerabilities](https://snyk.io/test/github/obartra/ssim/badge.svg)](https://snyk.io/test/github/obartra/ssim) [![DavidDM](https://david-dm.org/obartra/ssim.svg)](https://david-dm.org/obartra/ssim) |
-| 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-7.4-brightgreen.svg) [![Sauce Test Status](https://saucelabs.com/buildstatus/saucessim-master)](https://saucelabs.com/u/saucessim-master)|
+| Process      | Status                                                                                                                                                                                                                                                                                                |
+| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Versioning   | [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/) |
+| Dependencies | [![Known Vulnerabilities](https://snyk.io/test/github/obartra/ssim/badge.svg)](https://snyk.io/test/github/obartra/ssim) [![DavidDM](https://david-dm.org/obartra/ssim.svg)](https://david-dm.org/obartra/ssim)                                                                                       |
 
-[![Sauce Browser Matrix](https://saucelabs.com/browser-matrix/saucessim-master.svg)](https://saucelabs.com/u/saucessim-master)
-
 ## 💡 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).

New alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Fixed alerts

Network access

Supply chain risk

This module accesses the network.

Found 1 instance in 1 package

Uses eval

Supply chain risk

Package uses dynamic code execution (e.g., eval()), which is a dangerous practice. This can prevent the code from running in certain environments and increases the risk that the code may contain exploits or malicious behavior.

Found 1 instance in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Minified code

Quality

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

318083

increased by119.2%

Dependency count

0

decreased by-100%

Dev dependency count

30

decreased by-9.09%

Number of package files

98

increased by226.67%

Lines of code

4914

increased by110.36%

Number of low quality alerts

0

decreased by-100%

Number of low supply chain risk alerts

0

decreased by-100%

Number of medium supply chain risk alerts

1

decreased by-80%

Worsened metrics

Number of lines in readme file

61

decreased by-29.89%

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