Hello,
i'm trying to get an OCR function into my blazor website. Therefore i have
a js-File(ocr.js) that is creating a Worker that should recognize the
image. The paths are all correct.
My Website is using https with a selfsigned certificate.
Like this, everything works as long as i'm online, but i want the same
functions, when i dont have any internet-Connection. So i tried to add all
path for the worker local.
*Code File ocr.js:*
*var worker = null;var ocrobject = "ocrobject";/* call function work to
create text using chosen image */async function imageToText(Image) {
worker = Tesseract.createWorker({ workerPath:
'lib/tesseract.js/worker.min.js', langPath: /*'source/tessdata/',*/
'lib/tesseract.js', corePath:
'lib/tesseract.js/tesseract-core.wasm.js', /*add logger here*/
logger: m => console.log(m) }); Tesseract.setLogging(true);
await work(Image);}/*function to create text from given image, using
whitelist to specify which characters are allow in the return text*/async
function work(img) { await worker.load(); await
worker.loadLanguage('deu'); await worker.initialize('deu'); await
worker.setParameters({ tessedit_char_whitelist:
'0123456789+()&|/\.-:@abcdefghijklmnopqrstuvwxyzäöüßABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÜ
', }); let result = await worker.detect(img);
console.log(result.data); result = await worker.recognize(img); let
line = result.data.lines.map(e => e.text); console.log(line); let
lineJson = JSON.stringify(line); sessionStorage.setItem(ocrobject,
lineJson); await worker.terminate();}/*Source:
github.com/naptha/tesseract.js*/*
Now i'm getting this error when i'm trying to use the function
"imageToText", when i'm offline:
Uncaught Error: TypeError: Failed to fetch
at createWorker.js:173:15
at e.onmessage (onMessage.js:3:5)
createworker.js is called in the file "tesseract.min.js.map".
Do i need to add more Files to my project so that tesseract can work
offline?Or do i need to change the
"tesseract.min.js"/"tesseract.min.js.map"?
The files i already have you can see in the Image "Solution Explorer".
Windows 10
VS19
.NET 5.0
Thanks to everyone that is trying to help
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