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Questions tagged [text-recognition]

314 questions
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Firebase MLKit text recognition not recognising simple numbers in many cases

Firebase MLKit iOS Text recognition seems to work pretty well if text is formatted in a paragraph or long phrase. However, it fails to work if the numbers are just scattered around which is our case and if there is some line geometry going on…
Kerry
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Scanning invoices using OCR in swift

I am currently working on scanning invoices with OCR scanning. All invoices use the "OCRB" font, and have the same formatting. The bottom of a sample invoice looks like this This is what the user needs to scan. I have tried many different libraries…
Giovanni Palusa
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Not getting efficient result from Tesseract OCR as newocr producing

I am working on an app where i need to identify text from an image and what could be the better way than using Tesseract. As Tesseract is an open source and widely accepted. I have used Tesseract in my app. So, i am getting images from user and then…
Karsh Soni
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Problem with CountVectorizer from scikit-learn package

I have a dataset of movie reviews. It has two columns: 'class' and 'reviews'. I have done most of the routine preprocessing stuff, such as: lowering the characters, removing stop words, removing punctuation marks. At the end of preprocessing, each…
user10726240
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How to read one column texts with Google Cloud Vision API

I have the next document image: When I try to convert the image to text, the result is this: Top Text Ref: Rad: Dte: Ddo: Ejecutivo 76520400300 Banco de Bogotá Luz Adriana Bottom Text The problem is Google API recongnize it like two columns so,…
Julian Solarte
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Extract text using Google Vision Api combined with Credit Card Scanner?

I am trying to understand how text recognition works in Android, so I decided to create an app that can scan credit card and extract info (card number and expiry date). I found this open source: https://github.com/faceterteam/PayCards_Android and I…
Andy K
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How to detect colored text from 6 meters away?

I am using python, PIL, opencv and numpy to detect single color texts (i.e one is red, one is green). I want to detect these colorful text up to 6 meters away during live stream. I have used color detection methods but they did not work after 30-50…
Ender Ayhan
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Recognize Dates In A String

I want a class something like this: public interface IDateRecognizer { DateTime[] Recognize(string s); } The dates might exist anywhere in the string and might be any format. For now, I could limit to U.S. culture formats. The dates would not…
Tim Scott
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Isolate colored text regions in video stream

I want to detect colorful texts from 5-6 meters height in live video. Width of these texts are nearly 30-40 cm. I have used a few methods. For example, one is HSV to detect colors. But it is not useful since HSV value should change when the…
Ender Ayhan
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How can i handle native crash in my app due to Google Ocr lib, during instantiation on TextReconiger?

I am using Google's OCR library to detect text from image in my App. Earlier It was working fine but suddenly it has started giving error. I am getting crash during instantiation on TextReconiger. I am getting this crash on some devices like Samsung…
Radheshyam Singh
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TextRecognizer.isOperational() API always returns false

This question has been asked severally and only suggestions are made. Ill comprehend every suggestion hopefully. the dependency is defined in the manifest
Lucem
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Not able to read text from image using Mobile Vision API

I'm developing a mobile application, where I'm trying to extract meter reading from an image captured by the camera. I have done research and by trial and error, finally decided to use Google's Mobile Vision API instead of tesseract-ocr or OpenCV…
Dhaval Gulhane
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Google Vision api to extract text from a Bitmap

I'm trying to develop an application that extracts text from a screenshot and with these data (numbers and texts) I do something. It works but not as I expected, it isn't accurate at all. The strange thing is that the same screenshot at the same…
BitRulez
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How to improve results recognition with Tesseract?

I am using picture And i want to recognize numbers from it var engine = new TesseractEngine(@"./tessdata", "eng", EngineMode.TesseractOnly); engine.SetVariable("tessedit_char_whitelist", "0123456789"); var img = Pix.LoadFromFile(@"D:/Ex.png"); var…
A191919
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Text mining pdf files/issues with word frequencies

I am trying to mine a pdf of an article with rich pdf encodings and graphs. I noticed that when i mine some pdf documents i get the high frequency words to be phi, taeoe,toe,sigma, gamma etc. It works well with some pdf documents but i get these…
user3570187
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