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Questions tagged [text-recognition]

314 questions
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1 answer

MLKit Text detection on iOS working for photos taken from Assets.xcassets, but not the same photo taken on camera/uploaded from camera roll

I'm using Google's Text detection API from MLKit to detect text from images. It seems to work perfectly on screenshots but when I try to use it on images taken in the app (using AVFoundation) or on photos uploaded from camera roll it spits out a…
J. Oh
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Limit space size in Tesseract

I write in Python, using pytesseract or direct Popen calls if needed. I try to OCR a document with irregular structure, a letter looking like this: The problem is in the .hocr file generated by Tesseract I get lines consisting of left and right…
Dedalus
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Is it possible to set font style of the text which is going to be recognized?

Is it possible to set font style of the text which is going to be recognized? I am implementing an Android application to scan documents with the fixed font. The problem I am experiencing is the incorrect detection 0-digit (the font uses…
Bartosz Ostrowski
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3 answers

Sort TextBlock as top to bottom in vision API

While I am scanning for text using vision API, Overlay return multiple text boxes as unsorted list. So when I read for text by looping them, sometimes I am getting texts in wrong order, ie., text from bottom of the page appears first. Sample code…
Gunaseelan
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1 answer

Using Google's Text Recognition API to detect horizontal lines instead of blocks in images

Is there a way to detect full-sized, horizontal lines (max width) instead of text blocks in images using Google's Text Recognition API? Say, if I wanted to retrieve the total due from a receipt image like this: ... because as of now, the API…
DaveNOTDavid
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W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite not found

I am using Text Recognition API of Google. Even with proper import of its dependencies and internet connection. It shows that error. The Results of my debugging: It works on Android 4.4 Kitkat API 19 + but not lower than it If I try to run it in…
칼인오
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Is there any iphone Class that converts images to text format?

I want to develop an iPhone application that is going to convert some sort of images to text formats. I want to know that is there any built-in library for achieving this purpose?
Veer
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The OCR text recognition camera is not launching

I am working with text recognition on OCR in android. The code I have written have no errors at all, and it also install and create the APK successfully, but i do not know where the problem occurs that it stop activity from launching. It do not even…
Antesoft
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Tesseract - How to extract text from the image for the input coordinates?

I need to input image and coordinates. The text present in the input coordinate must be read as output. How to do this using node-tesseract?
Amy
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Text recognition in Android

I want to automate Whatsapp message sending process(Android). For that I want to use text recognition feature once the Whatsapp is fired from an implicit intent to recognize particular group name to which I want to send that msg. My questions…
Gaurav Singh
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Advise filters to improve text visibility on photo

I need filters to improve text visibility on photo, since it has some noise. Which filters (algorithms) do you know for this purpose? Now, I use monochrome filter but it doesn't improve image quality. I need to filter can determine medium background…
Denis Sologub
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Java - One Character recognition through image

I am trying to use Ocr frameworks to recognize these type of images: These are 2 letters G. I tried using the aocr.jar from asprise, but this code does not seem to do the trick.. import com.asprise.ocr.Ocr; import java.io.File; public class…
dendimiiii
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OCR library to read text from images(preferably python)

I need to read the text from some images, the images are clear and very low on noise. So my original thought was that it should be pretty easy to fetch the text. (little that I know) I tested some python libraries without much success (pytesser) ,…
theAlse
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Text Recognition in Vision Framework: Issue with Multiple Languages

I'm developing an iOS application that uses the Vision framework for Optical Character Recognition (OCR). I have set up a VNRecognizeTextRequest to recognize text from images, and I've specified multiple recognition languages. Here's my code: import…
kenxdrgn
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com.google.firebase.functions.FirebaseFunctionsException: No image present

when i call function annotate image from kotlin code , i get response with firebase Exception . exception message is ===> "com.google.firebase.functions.FirebaseFunctionsException: No image present." i added code like official documentation ==>…
amr eldsoky
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