├── .gitattributes ├── .github └── FUNDING.yml ├── LICENSE ├── README.md ├── images └── Funny-Minion-Quotes.jpg ├── index.html ├── js ├── tesseract-core.asm.js ├── tesseract-core.wasm.js ├── tesseract-ocr.js └── tesseract.min.js └── style └── ocr.css /.gitattributes: -------------------------------------------------------------------------------- 1 | # Auto detect text files and perform LF normalization 2 | * text=auto 3 | -------------------------------------------------------------------------------- /.github/FUNDING.yml: -------------------------------------------------------------------------------- 1 | ko_fi: bensonruan 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2019 Benson Ruan 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Tesseract OCR 2 | Extract text from image in browser using javascript library tesseract.js 3 | 4 | ## Live Demo 5 | **[https://bensonruan.com/image-to-text-ocr-with-tesseract-js/](https://bensonruan.com/image-to-text-ocr-with-tesseract-js/)** 6 | 7 | ![tesseract-demo](https://bensonruan.com/wp-content/uploads/2023/06/tesseract-ocr-demo.gif) 8 | 9 | ## Installing 10 | Clone this repository to your local computer 11 | ``` bash 12 | git https://github.com/bensonruan/Tesseract-OCR.git 13 | ``` 14 | Point your localhost to the cloned root directory 15 | 16 | Browse to http://localhost/index.html 17 | 18 | 19 | ## Library 20 | * [jquery](https://code.jquery.com/jquery-3.3.1.min.js) - JQuery 21 | * [tesseract.js](https://github.com/naptha/tesseract.js) - Javascript library that gets words in almost any language out of images 22 | 23 | 24 | ## Support me 25 | [![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/W7W6METMY) 26 | -------------------------------------------------------------------------------- /images/Funny-Minion-Quotes.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/bensonruan/Tesseract-OCR/d1eddc50a5899167aa2ad51327e023b9050394bd/images/Funny-Minion-Quotes.jpg -------------------------------------------------------------------------------- /index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Tesseract.js OCR demo 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
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113 | 114 | 115 | 116 | -------------------------------------------------------------------------------- /js/tesseract-ocr.js: -------------------------------------------------------------------------------- 1 | $( document ).ready(function() { 2 | var inputs = document.querySelectorAll( '.inputfile' ); 3 | Array.prototype.forEach.call( inputs, function( input ) 4 | { 5 | var label = input.nextElementSibling, 6 | labelVal = label.innerHTML; 7 | 8 | input.addEventListener( 'change', function( e ) 9 | { 10 | var fileName = ''; 11 | if( this.files && this.files.length > 1 ) 12 | fileName = ( this.getAttribute( 'data-multiple-caption' ) || '' ).replace( '{count}', this.files.length ); 13 | else 14 | fileName = e.target.value.split( '\\' ).pop(); 15 | 16 | if( fileName ){ 17 | label.querySelector( 'span' ).innerHTML = fileName; 18 | 19 | let reader = new FileReader(); 20 | reader.onload = function () { 21 | let dataURL = reader.result; 22 | $("#selected-image").attr("src", dataURL); 23 | $("#selected-image").addClass("col-12"); 24 | } 25 | let file = this.files[0]; 26 | reader.readAsDataURL(file); 27 | startRecognize(file); 28 | } 29 | else{ 30 | label.innerHTML = labelVal; 31 | $("#selected-image").attr("src", ''); 32 | $("#selected-image").removeClass("col-12"); 33 | $("#arrow-right").addClass("fa-arrow-right"); 34 | $("#arrow-right").removeClass("fa-check"); 35 | $("#arrow-right").removeClass("fa-spinner fa-spin"); 36 | $("#arrow-down").addClass("fa-arrow-down"); 37 | $("#arrow-down").removeClass("fa-check"); 38 | $("#arrow-down").removeClass("fa-spinner fa-spin"); 39 | $("#log").empty(); 40 | } 41 | }); 42 | 43 | // Firefox bug fix 44 | input.addEventListener( 'focus', function(){ input.classList.add( 'has-focus' ); }); 45 | input.addEventListener( 'blur', function(){ input.classList.remove( 'has-focus' ); }); 46 | }); 47 | }); 48 | 49 | $("#startLink").click(function () { 50 | var img = document.getElementById('selected-image'); 51 | startRecognize(img); 52 | }); 53 | 54 | function startRecognize(img){ 55 | $("#arrow-right").removeClass("fa-arrow-right"); 56 | $("#arrow-right").addClass("fa-spinner fa-spin"); 57 | $("#arrow-down").removeClass("fa-arrow-down"); 58 | $("#arrow-down").addClass("fa-spinner fa-spin"); 59 | recognizeFile(img); 60 | } 61 | 62 | function progressUpdate(packet){ 63 | var log = document.getElementById('log'); 64 | 65 | if(log.firstChild && log.firstChild.status === packet.status){ 66 | if('progress' in packet){ 67 | var progress = log.firstChild.querySelector('progress') 68 | progress.value = packet.progress 69 | } 70 | }else{ 71 | var line = document.createElement('div'); 72 | line.status = packet.status; 73 | var status = document.createElement('div') 74 | status.className = 'status' 75 | status.appendChild(document.createTextNode(packet.status)) 76 | line.appendChild(status) 77 | 78 | if('progress' in packet){ 79 | var progress = document.createElement('progress') 80 | progress.value = packet.progress 81 | progress.max = 1 82 | line.appendChild(progress) 83 | } 84 | 85 | 86 | if(packet.status == 'done'){ 87 | log.innerHTML = '' 88 | var pre = document.createElement('pre') 89 | pre.appendChild(document.createTextNode(packet.data.text.replace(/\n\s*\n/g, '\n'))) 90 | line.innerHTML = '' 91 | line.appendChild(pre) 92 | $(".fas").removeClass('fa-spinner fa-spin') 93 | $(".fas").addClass('fa-check') 94 | } 95 | 96 | log.insertBefore(line, log.firstChild) 97 | } 98 | } 99 | 100 | function recognizeFile(file){ 101 | $("#log").empty(); 102 | const corePath = window.navigator.userAgent.indexOf("Edge") > -1 103 | ? 'js/tesseract-core.asm.js' 104 | : 'js/tesseract-core.wasm.js'; 105 | 106 | 107 | const worker = new Tesseract.TesseractWorker({ 108 | corePath, 109 | }); 110 | 111 | worker.recognize(file, 112 | $("#langsel").val() 113 | ) 114 | .progress(function(packet){ 115 | console.info(packet) 116 | progressUpdate(packet) 117 | 118 | }) 119 | .then(function(data){ 120 | console.log(data) 121 | progressUpdate({ status: 'done', data: data }) 122 | }) 123 | } -------------------------------------------------------------------------------- /js/tesseract.min.js: -------------------------------------------------------------------------------- 1 | !function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.Tesseract=e():t.Tesseract=e()}(window,function(){return function(t){var e={};function r(n){if(e[n])return e[n].exports;var i=e[n]={i:n,l:!1,exports:{}};return 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e.comment&&(this.w=e.comment),e.deflateOptions&&(this.l=e.deflateOptions)),this.l||(this.l={})}I.prototype.h=function(){var t,e,r,n,o,a,f,u,h=new(s?Uint8Array:Array)(32768),c=0,l=this.input,p=this.c,m=this.filename,y=this.w;if(h[c++]=31,h[c++]=139,h[c++]=8,t=0,this.g.fname&&(t|=L),this.g.fcomment&&(t|=C),this.g.fhcrc&&(t|=R),h[c++]=t,e=(Date.now?Date.now():+new Date)/1e3|0,h[c++]=255&e,h[c++]=e>>>8&255,h[c++]=e>>>16&255,h[c++]=e>>>24&255,h[c++]=0,h[c++]=B,this.g.fname!==i){for(f=0,u=m.length;f>>8&255),h[c++]=255&a;h[c++]=0}if(this.g.comment){for(f=0,u=y.length;f>>8&255),h[c++]=255&a;h[c++]=0}return this.g.fhcrc&&(r=65535&d(h,0,c),h[c++]=255&r,h[c++]=r>>>8&255),this.l.outputBuffer=h,this.l.outputIndex=c,h=(o=new w(l,this.l)).h(),c=o.b,s&&(c+8>h.buffer.byteLength?(this.a=new Uint8Array(c+8),this.a.set(new Uint8Array(h.buffer)),h=this.a):h=new Uint8Array(h.buffer)),n=d(l,i,i),h[c++]=255&n,h[c++]=n>>>8&255,h[c++]=n>>>16&255,h[c++]=n>>>24&255,u=l.length,h[c++]=255&u,h[c++]=u>>>8&255,h[c++]=u>>>16&255,h[c++]=u>>>24&255,this.c=p,s&&c>>=1){case 0:var e=this.input,r=this.c,a=this.a,f=this.b,u=e.length,h=i,c=a.length,l=i;switch(this.e=this.j=0,r+1>=u&&n(Error("invalid uncompressed block header: LEN")),h=e[r++]|e[r++]<<8,r+1>=u&&n(Error("invalid uncompressed block header: NLEN")),h===~(e[r++]|e[r++]<<8)&&n(Error("invalid uncompressed block header: length verify")),r+h>e.length&&n(Error("input buffer is broken")),this.q){case D:for(;f+h>a.length;){if(h-=l=c-f,s)a.set(e.subarray(r,r+l),f),f+=l,r+=l;else for(;l--;)a[f++]=e[r++];this.b=f,a=this.f(),f=this.b}break;case z:for(;f+h>a.length;)a=this.f({B:2});break;default:n(Error("invalid inflate mode"))}if(s)a.set(e.subarray(r,r+h),f),f+=h,r+=h;else for(;h--;)a[f++]=e[r++];this.c=r,this.b=f,this.a=a;break;case 1:this.r(et,nt);break;case 2:var p,d,m,y,g=it(this,5)+257,b=it(this,5)+1,w=it(this,4)+4,x=new(s?Uint8Array:Array)(F.length),E=i,A=i,_=i,k=i,U=i;for(U=0;U=M?8:255>=M?9:279>=M?7:8;var Q,tt,et=v(Z),rt=new(s?Uint8Array:Array)(30);for(Q=0,tt=rt.length;Q=f&&n(Error("input buffer is broken")),i|=s[a++]<>>e,t.e=o-e,t.c=a,r}function ot(t,e){for(var r,i,o=t.j,s=t.e,a=t.input,f=t.c,u=a.length,h=e[0],c=e[1];s=u);)o|=a[f++]<>>16)>s&&n(Error("invalid code length: "+i)),t.j=o>>i,t.e=s-i,t.c=f,65535&r}function st(t){this.input=t,this.c=0,this.G=[],this.R=!1}function at(t){if("string"==typeof t){var e,r,n=t.split("");for(e=0,r=n.length;e>>0;t=n}for(var i,o=1,s=0,a=t.length,f=0;0>>0}function ft(t,e){var r,i;switch(this.input=t,this.c=0,!e&&(e={})||(e.index&&(this.c=e.index),e.verify&&(this.V=e.verify)),r=t[this.c++],i=t[this.c++],15&r){case ut:this.method=ut;break;default:n(Error("unsupported compression method"))}0!=((r<<8)+i)%31&&n(Error("invalid fcheck flag:"+((r<<8)+i)%31)),32&i&&n(Error("fdict flag is not supported")),this.J=new N(t,{index:this.c,bufferSize:e.bufferSize,bufferType:e.bufferType,resize:e.resize})}N.prototype.r=function(t,e){var r=this.a,n=this.b;this.A=t;for(var i,o,s,a,f=r.length-258;256!==(i=ot(this,t));)if(256>i)n>=f&&(this.b=n,r=this.f(),n=this.b),r[n++]=i;else for(a=G[o=i-257],0=f&&(this.b=n,r=this.f(),n=this.b);a--;)r[n]=r[n++-s];for(;8<=this.e;)this.e-=8,this.c--;this.b=n},N.prototype.Q=function(t,e){var r=this.a,n=this.b;this.A=t;for(var i,o,s,a,f=r.length;256!==(i=ot(this,t));)if(256>i)n>=f&&(f=(r=this.f()).length),r[n++]=i;else for(a=G[o=i-257],0f&&(f=(r=this.f()).length);a--;)r[n]=r[n++-s];for(;8<=this.e;)this.e-=8,this.c--;this.b=n},N.prototype.f=function(){var t,e,r=new(s?Uint8Array:Array)(this.b-32768),n=this.b-32768,i=this.a;if(s)r.set(i.subarray(32768,r.length));else for(t=0,e=r.length;tt;++t)i[t]=i[n+t];return this.b=32768,i},N.prototype.S=function(t){var e,r,n,i=this.input.length/this.c+1|0,o=this.input,a=this.a;return t&&("number"==typeof t.B&&(i=t.B),"number"==typeof t.M&&(i+=t.M)),2>i?r=(n=(o.length-this.c)/this.A[2]/2*258|0)e&&(this.a.length=e),t=this.a),this.buffer=t},st.prototype.i=function(){for(var t=this.input.length;this.c>>0,d(e,i,i)!==m&&n(Error("invalid CRC-32 checksum: 0x"+d(e,i,i).toString(16)+" / 0x"+m.toString(16))),a.Z=f=(y[b++]|y[b++]<<8|y[b++]<<16|y[b++]<<24)>>>0,(4294967295&e.length)!==f&&n(Error("invalid input size: "+(4294967295&e.length)+" / "+f)),this.G.push(a),this.c=b}this.R=o;var v,w,x,E=this.G,A=0,_=0;for(v=0,w=E.length;v>>0!==at(t)&&n(Error("invalid adler-32 checksum"))),t};var ut=8;function ht(t,e){this.input=t,this.a=new(s?Uint8Array:Array)(32768),this.k=ct.t;var r,n={};for(r in!e&&(e={})||"number"!=typeof e.compressionType||(this.k=e.compressionType),e)n[r]=e[r];n.outputBuffer=this.a,this.I=new w(this.input,n)}var ct=A;function lt(t,e){var r;return r=new ht(t).h(),e||(e={}),e.H?r:yt(r)}function pt(t,e){var r;return t.subarray=t.slice,r=new ft(t).i(),e||(e={}),e.noBuffer?r:yt(r)}function dt(t,e){var r;return t.subarray=t.slice,r=new I(t).h(),e||(e={}),e.H?r:yt(r)}function mt(t,e){var r;return t.subarray=t.slice,r=new st(t).i(),e||(e={}),e.H?r:yt(r)}function yt(t){var e,n,i=new r(t.length);for(e=0,n=t.length;e>24&255,f[u++]=a>>16&255,f[u++]=a>>8&255,f[u++]=255&a,f},e.deflate=function(e,r,n){t.nextTick(function(){var t,i;try{i=lt(e,n)}catch(e){t=e}r(t,i)})},e.deflateSync=lt,e.inflate=function(e,r,n){t.nextTick(function(){var t,i;try{i=pt(e,n)}catch(e){t=e}r(t,i)})},e.inflateSync=pt,e.gzip=function(e,r,n){t.nextTick(function(){var t,i;try{i=dt(e,n)}catch(e){t=e}r(t,i)})},e.gzipSync=dt,e.gunzip=function(e,r,n){t.nextTick(function(){var t,i;try{i=mt(e,n)}catch(e){t=e}r(t,i)})},e.gunzipSync=mt}).call(this)}).call(this,r(2),r(1).Buffer)},function(t,e,r){(function(e){function n(t,e){return function(t){if(Array.isArray(t))return t}(t)||function(t,e){var r=[],n=!0,i=!1,o=void 0;try{for(var s,a=t[Symbol.iterator]();!(n=(s=a.next()).done)&&(r.push(s.value),!e||r.length!==e);n=!0);}catch(t){i=!0,o=t}finally{try{n||null==a.return||a.return()}finally{if(i)throw o}}return r}(t,e)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}var i=r(46),o=r(5);t.exports=function(t,r){var s=arguments.length>2&&void 0!==arguments[2]?arguments[2]:70,a=e.from(r),f=o(a),u=0,h=null,c=null,l=0,p=0;if(f&&"image/bmp"===f.mime){var d=i.decode(a);h=t._malloc(d.data.length*Uint8Array.BYTES_PER_ELEMENT),t.HEAPU8.set(d.data,h),l=d.width,p=d.height,u=4}else{var m=t._malloc(a.length*Uint8Array.BYTES_PER_ELEMENT);t.HEAPU8.set(a,m),c=t._pixReadMem(m,a.length),0===t.getValue(c+28,"i32")&&t.setValue(c+28,s,"i32");var y=n(Array(2).fill(0).map(function(e,r){return t.getValue(c+4*r,"i32")}),2);l=y[0],p=y[1]}return{w:l,h:p,bytesPerPixel:u,data:h,pix:c}}}).call(this,r(1).Buffer)},function(t,e,r){var n=r(47),i=r(48);t.exports={encode:n,decode:i}},function(t,e,r){(function(e){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 e(this.offset+this.rgbSize);this.pos=0,t.write(this.flag,this.pos,2),this.pos+=2,t.writeUInt32LE(this.fileSize,this.pos),this.pos+=4,t.writeUInt32LE(this.reserved,this.pos),this.pos+=4,t.writeUInt32LE(this.offset,this.pos),this.pos+=4,t.writeUInt32LE(this.headerInfoSize,this.pos),this.pos+=4,t.writeUInt32LE(this.width,this.pos),this.pos+=4,t.writeInt32LE(-this.height,this.pos),this.pos+=4,t.writeUInt16LE(this.planes,this.pos),this.pos+=2,t.writeUInt16LE(this.bitPP,this.pos),this.pos+=2,t.writeUInt32LE(this.compress,this.pos),this.pos+=4,t.writeUInt32LE(this.rgbSize,this.pos),this.pos+=4,t.writeUInt32LE(this.hr,this.pos),this.pos+=4,t.writeUInt32LE(this.vr,this.pos),this.pos+=4,t.writeUInt32LE(this.colors,this.pos),this.pos+=4,t.writeUInt32LE(this.importantColors,this.pos),this.pos+=4;for(var r=0,n=3*this.width+this.extraBytes,i=0;i0){var a=this.pos+i*n+3*this.width;t.fill(0,a,a+this.extraBytes)}}return t},t.exports=function(t,e){return void 0===e&&(e=100),{data:new r(t).encode(),width:t.width,height:t.height}}}).call(this,r(1).Buffer)},function(t,e,r){(function(e){function r(t,e){if(this.pos=0,this.buffer=t,this.is_with_alpha=!!e,this.bottom_up=!0,this.flag=this.buffer.toString("utf-8",0,this.pos+=2),"BM"!=this.flag)throw new Error("Invalid BMP File");this.parseHeader(),this.parseRGBA()}r.prototype.parseHeader=function(){if(this.fileSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.reserved=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.offset=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.headerSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.width=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.height=this.buffer.readInt32LE(this.pos),this.pos+=4,this.planes=this.buffer.readUInt16LE(this.pos),this.pos+=2,this.bitPP=this.buffer.readUInt16LE(this.pos),this.pos+=2,this.compress=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.rawSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.hr=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.vr=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.colors=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.importantColors=this.buffer.readUInt32LE(this.pos),this.pos+=4,16===this.bitPP&&this.is_with_alpha&&(this.bitPP=15),this.bitPP<15){var t=0===this.colors?1<=0?this.height-1:-this.height;for(r=this.height-1;r>=0;r--){for(var n=this.bottom_up?r:this.height-1-r,i=0;i>7-a&1];this.data[s+4*a]=0,this.data[s+4*a+1]=f.blue,this.data[s+4*a+2]=f.green,this.data[s+4*a+3]=f.red}0!=e&&(this.pos+=4-e)}},r.prototype.bit4=function(){if(2==this.compress){var t=function(t){var r=this.palette[t];this.data[e]=0,this.data[e+1]=r.blue,this.data[e+2]=r.green,this.data[e+3]=r.red,e+=4};this.data.fill(255);for(var e=0,r=this.bottom_up?this.height-1:0,n=!1;e>4),1&u&&u+1>1&1)&&this.pos++}}else for(u=0;u>4),n=!n}}else{var h=Math.ceil(this.width/2),c=h%4;for(a=this.height-1;a>=0;a--){var l=this.bottom_up?a:this.height-1-a;for(s=0;s>4,d=15&o,m=this.palette[p];if(this.data[e]=0,this.data[e+1]=m.blue,this.data[e+2]=m.green,this.data[e+3]=m.red,2*s+1>=this.width)break;m=this.palette[d],this.data[e+4]=0,this.data[e+4+1]=m.blue,this.data[e+4+2]=m.green,this.data[e+4+3]=m.red}0!=c&&(this.pos+=4-c)}}},r.prototype.bit8=function(){if(1==this.compress){var t=function(t){var r=this.palette[t];this.data[e]=0,this.data[e+1]=r.blue,this.data[e+2]=r.green,this.data[e+3]=r.red,e+=4};this.data.fill(255);for(var e=0,r=this.bottom_up?this.height-1:0;e=0;s--){var h=this.bottom_up?s:this.height-1-s;for(o=0;o=0;r--){for(var n=this.bottom_up?r:this.height-1-r,i=0;i>5&e)/e*255|0,f=(o>>10&e)/e*255|0,u=o>>15?255:0,h=n*this.width*4+4*i;this.data[h]=u,this.data[h+1]=s,this.data[h+2]=a,this.data[h+3]=f}this.pos+=t}},r.prototype.bit16=function(){var t=this.width%2*2;this.maskRed=31744,this.maskGreen=992,this.maskBlue=31,this.mask0=0,3==this.compress&&(this.maskRed=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskGreen=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskBlue=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.mask0=this.buffer.readUInt32LE(this.pos),this.pos+=4);for(var e=[0,0,0],r=0;r<16;r++)this.maskRed>>r&1&&e[0]++,this.maskGreen>>r&1&&e[1]++,this.maskBlue>>r&1&&e[2]++;e[1]+=e[0],e[2]+=e[1],e[0]=8-e[0],e[1]-=8,e[2]-=8;for(var n=this.height-1;n>=0;n--){for(var i=this.bottom_up?n:this.height-1-n,o=0;o>e[1],u=(s&this.maskRed)>>e[2],h=i*this.width*4+4*o;this.data[h]=0,this.data[h+1]=a,this.data[h+2]=f,this.data[h+3]=u}this.pos+=t}},r.prototype.bit24=function(){for(var t=this.height-1;t>=0;t--){for(var e=this.bottom_up?t:this.height-1-t,r=0;r=0;t--)for(var e=this.bottom_up?t:this.height-1-t,r=0;r=0;t--)for(e=this.bottom_up?t:this.height-1-t,r=0;r0&&void 0!==arguments[0]?arguments[0]:{};!function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}(this,t),this.worker=null,this.options=n({},f.defaultOptions,r),["corePath","workerPath","langPath"].forEach(function(t){s.not.undefined(r[t])&&(e.options=n({},e.options,i({},t,a(r[t]))))}),this._currentJob=null,this._queue=[]}var e,r,c;return e=t,(r=[{key:"recognize",value:function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"eng",r=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return this._sendJob("recognize",t,e,r)}},{key:"detect",value:function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return this._sendJob("detect",t,"osd",e)}},{key:"recv",value:function(t){this._currentJob.id===t.jobId?this._currentJob.handle(n({},t,{data:"resolve"===t.status&&"recognize"===t.action?u(t.data):t.data})):console.warn("Job ID ".concat(t.jobId," not known."))}},{key:"dequeue",value:function(){this._currentJob=null,this._queue.length&&this._queue[0]()}},{key:"terminate",value:function(){this.worker&&f.terminateWorker(this),this.worker=null,this._currentJob=null,this._queue=[]}},{key:"_sendJob",value:function(t,e,r,n){var i=this;return this._delay(function(o){o.send(t,{image:e,langs:r,params:n,options:i.options})})}},{key:"_delay",value:function(t){var e=this;s.null(this.worker)&&(this.worker=f.spawnWorker(this,this.options));var r=new h(this);return this._queue.push(function(){e._queue.shift(),e._currentJob=r,t(r)}),s.null(this._currentJob)&&this.dequeue(),r}}])&&o(e.prototype,r),c&&o(e,c),t}();t.exports=c},function(t,e){t.exports=function(t){return new Uint8Array(atob(t).split("").map(function(t){return t.charCodeAt(0)}))}},function(t,e,r){var n=r(14),i=n.OEM,o=n.PSM;t.exports={defaultOptions:{langPath:"https://tessdata.projectnaptha.com/4.0.0"},defaultParams:{tessedit_ocr_engine_mode:i.LSTM_ONLY,tessedit_pageseg_mode:o.SINGLE_BLOCK,tessedit_char_whiltelist:"",tessjs_create_pdf:"0",tessjs_create_hocr:"1",tessjs_create_tsv:"1",tessjs_create_box:"0",tessjs_create_unlv:"0",tessjs_create_osd:"0",tessjs_textonly_pdf:"0",tessjs_pdf_name:"tesseract.js-ocr-result",tessjs_pdf_title:"Tesseract.js OCR Result",tessjs_pdf_auto_download:!0,tessjs_pdf_bin:!1,tessjs_image_rectangle_left:0,tessjs_image_rectangle_top:0,tessjs_image_rectangle_width:-1,tessjs_image_rectangle_height:-1}}},function(t){t.exports={name:"tesseract.js",version:"2.0.0-alpha.13",description:"Pure Javascript Multilingual OCR",main:"src/index.js",unpkg:"dist/tesseract.min.js",jsdelivr:"dist/tesseract.min.js",scripts:{start:"node scripts/server.js",build:"rimraf dist && webpack --config scripts/webpack.config.prod.js",prepublishOnly:"npm run build",wait:"wait-on http://localhost:3000/package.json",test:"npm-run-all -p -r start test:all","test:all":"npm-run-all wait test:browser:* test:node","test:node":"nyc mocha --exit --bail --require ./scripts/test-helper.js ./tests/*.test.js","test:browser-tpl":"mocha-headless-chrome -a incognito -a no-sandbox -a disable-setuid-sandbox -t 300000","test:browser:detect":"npm run test:browser-tpl -- -f ./tests/detect.test.html","test:browser:recognize":"npm run test:browser-tpl -- -f ./tests/recognize.test.html",lint:"eslint src",postinstall:"opencollective-postinstall || true"},browser:{"./src/node/index.js":"./src/browser/index.js"},author:"",contributors:["jeromewu"],license:"Apache-2.0",devDependencies:{"@babel/core":"^7.4.5","@babel/preset-env":"^7.4.5",acorn:"^6.1.1","babel-loader":"^8.0.6",cors:"^2.8.5",eslint:"^5.9.0","eslint-config-airbnb":"^17.1.0","eslint-plugin-import":"^2.14.0","eslint-plugin-jsx-a11y":"^6.1.2","eslint-plugin-react":"^7.11.1","expect.js":"^0.3.1",express:"^4.16.4",mocha:"^5.2.0","mocha-headless-chrome":"^2.0.2","npm-run-all":"^4.1.5",nyc:"^13.1.0",rimraf:"^2.6.3","wait-on":"^3.2.0",webpack:"^4.26.0","webpack-cli":"^3.1.2","webpack-dev-middleware":"^3.4.0"},dependencies:{axios:"^0.18.0","check-types":"^7.4.0","is-url":"1.2.2","node-fetch":"^2.3.0","opencollective-postinstall":"^2.0.2","resolve-url":"^0.2.1","tesseract.js-core":"^2.0.0-beta.10","tesseract.js-utils":"^1.0.0-beta.8"},repository:{type:"git",url:"https://github.com/naptha/tesseract.js.git"},bugs:{url:"https://github.com/naptha/tesseract.js/issues"},homepage:"https://github.com/naptha/tesseract.js",collective:{type:"opencollective",url:"https://opencollective.com/tesseractjs"}}},function(t,e){function r(t){for(var e=1;e div { 2 | color: #313131; 3 | border-top: 1px solid #dadada; 4 | padding: 9px; 5 | display: flex; 6 | } 7 | #log > div:first-child { 8 | border: 0; 9 | } 10 | .status { 11 | min-width: 250px; 12 | } 13 | #log { 14 | border: 1px solid #dadada; 15 | padding: 10px; 16 | min-height: 200px; 17 | } 18 | .image-container img{ 19 | border: 1px solid #dadada; 20 | } 21 | progress { 22 | display: block; 23 | width: 100%; 24 | transition: opacity 0.5s linear; 25 | } 26 | progress[value="1"] { 27 | opacity: 0.5; 28 | } 29 | select { 30 | padding: 12px 5px; 31 | width: 209px; 32 | } 33 | 34 | .inputfile { 35 | width: 0.1px; 36 | height: 0.1px; 37 | opacity: 0; 38 | overflow: hidden; 39 | position: absolute; 40 | z-index: -1; 41 | } 42 | 43 | .inputfile + label { 44 | max-width: 80%; 45 | font-size: 1.25rem; 46 | /* 20px */ 47 | font-weight: 700; 48 | text-overflow: ellipsis; 49 | white-space: nowrap; 50 | cursor: pointer; 51 | display: inline-block; 52 | overflow: hidden; 53 | padding: 0.625rem 1.25rem; 54 | /* 10px 20px */ 55 | } 56 | 57 | .no-js .inputfile + label { 58 | display: none; 59 | } 60 | 61 | .inputfile:focus + label, 62 | .inputfile.has-focus + label { 63 | outline: 1px dotted #000; 64 | outline: -webkit-focus-ring-color auto 5px; 65 | } 66 | 67 | .inputfile + label * { 68 | /* pointer-events: none; */ 69 | /* in case of FastClick lib use */ 70 | } 71 | 72 | .inputfile + label svg { 73 | width: 1em; 74 | height: 1em; 75 | vertical-align: middle; 76 | fill: currentColor; 77 | margin-top: -0.25em; 78 | /* 4px */ 79 | margin-right: 0.25em; 80 | /* 4px */ 81 | } 82 | 83 | 84 | /* style 1 */ 85 | 86 | .inputfile-1 + label { 87 | color: #f1e5e6; 88 | background-color: #d3394c; 89 | } 90 | 91 | .inputfile-1:focus + label, 92 | .inputfile-1.has-focus + label, 93 | .inputfile-1 + label:hover { 94 | background-color: #722040; 95 | } 96 | 97 | #arrow-right , 98 | #arrow-down { 99 | font-size: 3em; 100 | } 101 | 102 | #arrow-right { 103 | position: absolute; 104 | top: 60px; 105 | } 106 | #arrow-down{ 107 | width: 50px; 108 | margin: 10px auto; 109 | } 110 | 111 | #arrow-right.fa-arrow-right , 112 | #arrow-right.fa-spin , 113 | #arrow-down.fa-arrow-down , 114 | #arrow-down.fa-spin { 115 | color: #d3394c; 116 | } 117 | 118 | .fa-check{ 119 | color:green; 120 | } 121 | 122 | #log pre { 123 | white-space: pre-wrap; /* css-3 */ 124 | white-space: -moz-pre-wrap; /* Mozilla, since 1999 */ 125 | white-space: -pre-wrap; /* Opera 4-6 */ 126 | white-space: -o-pre-wrap; /* Opera 7 */ 127 | word-wrap: break-word; /* Internet Explorer 5.5+ */ 128 | } 129 | 130 | #startLink{ 131 | text-decoration: underline; 132 | margin-top: 100px; 133 | } 134 | 135 | @media screen and (min-width: 992px) { 136 | #startPre{ 137 | position: absolute; 138 | top: 50px; 139 | padding: 20px; 140 | } 141 | } --------------------------------------------------------------------------------