5
JS的新功能，也是Node的新功能。 在Safari中運行Tesseract.js（文本識別軟件：http://tesseract.projectnaptha.com）大約需要10秒，並立即開始輸出進度。
節點（v6.9.1）（從終端或通過Electron運行）在CPU開始輸出到控制檯之前將CPU運行至100％，持續4分鐘20秒。然後它幾乎在同一時間結束。Node.js比使用Tesseract.Js的瀏覽器（Safari）慢20倍
推薦哪些故障排除步驟？這對節點常見嗎？
我在日誌中看到的唯一區別是Safari「在緩存eng.traineddata中找到」清除和禁用緩存只會影響最小時間。 已經嘗試了幾個.JPG和.PNG（300-600kb）文件，但結果相同 - 但BMP（3.7MB）提供了17秒的快速響應 - 然後錯誤並沒有完成。 （這是一個 '下一個滴答' 的問題？）
var Tesseract = require('tesseract.js');
var image = "./images/sample.jpg";
function tesseract(){
Tesseract.recognize(image)
.progress(function(message){console.log(message)})
.then(result => console.log(result.text))
}
tesseract();
（編輯迫使輸出格式化爲代碼）
NODE CONSOLE.LOG
>Bash-3.2$ node JustTess.js
*Waits 4+ min and Then*
{ status: 'loading tesseract core' }
{ status: 'loaded tesseract core' }
{ status: 'initializing tesseract', progress: 0 }
pre-main prep time:108 ms
{ status: 'initializing tesseract', progress: 1 }
{ status: 'loading eng.traineddata', progress: 0 }
{ status: 'loading eng.traineddata', progress: 1 }
{ status: 'initializing api', progress: 0 }
{ status: 'initializing api', progress: 0.3 }
{ status: 'initializing api', progress: 0.6 }
{ status: 'initializing api', progress: 1 }
{ status: 'recognizing text', progress: 0 }
{ status: 'recognizing text', progress: 0.014285714 }...
SAFARI CONSOLE.LOG
>[Log] – {status: "loading tesseract core"}
[Log] – {status: "loaded tesseract core"}
[Log] – {status: "initializing tesseract api"}
[Log] pre-main prep time: 115 ms (index.js, line 10)
[Log] – {status: "initialized tesseract api"}
[Log] – {status: "found in cache eng.traineddata"}
[Log] – {status: "loaded eng.traineddata"}
[Log] – {status: "initialized with language"}
[Log] – {status: "recognizing text", progress: 0}
[Log] – {status: "recognizing text", progress: 0.0142}...
NODE與BMP
bash-3.2$ node JustTess.js
*After 17 sec*
{ status: 'initializing tesseract', progress: 0 }
pre-main prep time: 118 ms
{ status: 'initializing tesseract', progress: 1 }
{ status: 'loading eng.traineddata', progress: 0 }
{ status: 'loading eng.traineddata', progress: 1 }
{ status: 'initializing api', progress: 0 }
{ status: 'initializing api', progress: 0.3 }
{ status: 'initializing api', progress: 0.6 }
Error in pixRemoveColormap: pixs must be {1,2,4,8} bpp
Error in pixGetDepth: pix not defined
Error in pixGetWpl: pix not defined
Error in pixCreateHeader: depth must be {1, 2, 4, 8, 16, 24, 32}
Error in pixCreateNoInit: pixd not made
Error in pixCreateTemplateNoInit: pixd not made
Error in pixCreateTemplate: pixd not made
Error in pixCopy: pixd not made
{ status: 'initializing api', progress: 1 }
3
3
/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_modules/tesser
act.js-core/index.js:4
function f(a){throw a;}var h=void 0,i=!0,j=null,k=!1;function aa(){return function(){}}function ba(
a){return function(){return a}}var n,Module;Module||(Module=eval("(function() { try { return Tesser
actCore || {} } catch(e) { return {} } })()"));var ca={},da;for(da in Module)Module.hasOwnProperty(
da)&&(ca[da]=Module[da]);var ea=i,fa=!ea&&i;
^
abort(3) at Error
at Error (native)
at Na (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_mod
ules/tesseract.js-core/index.js:32:26)
at ka (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_mod
ules/tesseract.js-core/index.js:507:108)
at Array.JHa (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/n
ode_modules/tesseract.js-core/index.js:402:25808)
at xd (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_mod
ules/tesseract.js-core/index.js:382:924)
at R.TesseractCore.V.Begin (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programmi
ng/GitHub/ba/node_modules/tesseract.js-core/index.js:511:288)
at DumpLiterallyEverything (/Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programmi
ng/GitHub/ba/node_modules/tesseract.js/src/common/dump.js:13:8)
at /Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_modules
/tesseract.js/src/common/worker.js:121:22
at /Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_modules
/tesseract.js/src/common/worker.js:92:9
at /Users/brent/Library/Mobile Documents/com~apple~CloudDocs/Programming/GitHub/ba/node_modules
/tesseract.js/src/node/lang.js:14:25
If this abort() is unexpected, build with -s ASSERTIONS=1 which can give more information.
在我的節點上嘗試了他們的演示（6.9.1） - 在瀏覽器中工作得很快。只有想到 - 他們需要節點6.8或更高，但你提到6.7。此問題也許與您擁有的相同：https：//github.com/naptha/tesseract.js/issues/53 – Andrey
謝謝。更新了節點，並嘗試使用.png以及相同的結果。這看起來是一樣的問題。再次感謝。 –