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Questions tagged [text-recognition]

314 questions
21
votes
3 answers

C/C++/Objective-C text recognition library

Does anyone know of any free/open-source text recognition libraries in C/C++/Objective-C? Basically something that can scan an image, and read out all of the plain text.
Andy White
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2 answers

Scene Text Image Super-Resolution for OCR

I am working on an OCR system. A challenge that I'm facing for recognizing the text within ROI is due to the shakiness or motion effect shot or text that is not focus due to angle positions. Please consider the following demo sample If you notice…
Innat
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17
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1 answer

Google Vision API does not recognize single digits

I have a project that make use of Google Vision API DOCUMENT_TEXT_DETECTION in order to extract text from document images. Often the API has troubles in recognizing single digits, as you can see in this image: I suppose that the problem could be…
Davide Biraghi
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17
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2 answers

Google Cloud Vision - Numbers and Numerals OCR

I've been trying to implement an OCR program with Python that reads numbers with a specific format, XXX-XXX. I used Google's Cloud Vision API Text Recognition, but the results were unreliable. Out of 30 high-contrast 1280 x 1024 bmp images, only a…
NigelJL
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17
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1 answer

Google Mobile Vision Text API Example

I am currently writing code that should be able to view a picture of text and then extract the text from the picture for android based devices. I did some research online and found that Google provides their own API called "Mobile Vision" (a package…
Andrew
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16
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3 answers

Mathematica's TextRecognize not up to par

Please take a look at the screenshot below and see if you can tell me why this won't work. The examples in on the reference page for TextRecognize look pretty impressive, I don't think recognizing single letters like this should be a problem. I've…
C. E.
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16
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2 answers

Can we use Yolo to detect and recognize text in a image

Currently I am using a deep learing model which is called "Yolov2" for object detection, and I want to use it to extract text and use save it in disk, but i don't know how to do that, if anyone know more about that, please advice me I use…
Kamel BOUYACOUB
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15
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6 answers

Google Mobile Vision library not downloading

I am trying to implement the Google Mobile Vision TextRecogniser API into my app, to read text off a given Image. When I try to use the feature, I get this error: W/DynamiteModule: Local module descriptor class for…
user7541761
11
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1 answer

How to get position of text in an image using Mobile Vision API?

How to get the position of text on the screen in an image using Mobile Vision API, and how to draw a rectangle around them? Example:
VINNUSAURUS
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10
votes
5 answers

Which library to use to extract text from images?

I am writing a program that when given an image of a low level math problem (e.g. 98*13) should be able to output the answer. The numbers would be black, and the background white. Not a captcha, just an image of a math problem. The math problems…
Entity
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3 answers

JavaScript text recognition and OCR on

I found a web application that recognizes handwritten math equations: http://webdemo.visionobjects.com/equation.html?locale=default I would like to know if someone knows an app or a tutorial or an open source project that implements this…
Elie
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9
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0 answers

How can I implement text recognition on an iOS app?

I'm new to iOS development and I'm trying to make an app that, using the iPhone's camera, recognizes a string of numbers and converts them to text. Is there a module for iOS development that I can easily incorporate into my app? Or is there a…
user2565148
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8
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1 answer

Finding contours with lines of text in OpenCV

I am writing a text recognition program, and I have a problem with sorting contours. The program works fine for one line of text, but when it comes to the whole block of text my program doesn't detect the lines of text like 80% of the time. What…
Anže Mur
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8
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3 answers

Recognizing text from a picture in delphi

i need an advice on how to approach this problem. I have some picture data: *.jpg, *.bmp ... and i need to extract the data from it. The data is alphanumeric text. I work in delphi.
dzibul
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8
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2 answers

Converting Images to Black and White for Image Recognition in R

I'm trying to gain some experience with automatic text recognition and i'm using the package tesseract to perform ocr on some images (i.e. some screenshots I took). To improve the performance of my program's recognition of the prices in the image…
Francesco Dal Pont
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