tesseract

I'm using the popular OCR tessercat fork for android tess-two https://github.com/rmtheis/tess-two . I integrated all the staff and it works etc... But I need to detect only digits, my code for now is: TessBaseAPI baseApi = new TessBaseAPI(); baseApi.init(pathToLngFile, langName); baseApi.setImage(bitmap); String recognizedText = baseApi.getUTF8Text(); baseApi.end(); doSomething(recognizedText); From here https://code.google.com/p/tesseract-ocr/wiki/FAQ#How_do_I_recognize_only_digits ? I'm using version V3, and there ain't code solution instead some command line solution - not relevant for

Does anyone know how to set the character whitelist for Pytesseract? I want it to only output A-z and 0-9. Is this possible? I have the following: img = Image.open('test.jpg') result = pytesseract.image_to_string(img, config='-psm 6') I'm getting other characters like / for a 1 so I would like to limit the options of possible characters. James Vaughn You can accomplish that with the below line. Or you can setup the config file for tesseract to do the same thing Limit characters tesseract is looking for pytesseract.image_to_string(question_img, config="-c tessedit_char_whitelist

I want create new train data using tesseract. So follow step which mentioned in below website. https://blog.cedric.ws/how-to-train-tesseract-301 I got below error while i execute Unicharset in OS X terminal. Command: unicharset_extractor eng.micrtest.exp.box Error: -bash: unicharset_extractor: command not found I have using below software versions OS: OSX EI caption 10.11.1 tesseract 3.04.01 leptonica-1.72 libjpeg 8d : libpng 1.6.21 : libtiff 4.0.6 : lib 1.2.5 is this possible to execute unchaste_extractor command in OSx? Thanks in advance. Problem is "Unicharset_extractor" not install in your

I want to read a specific character sequence with Tesseract like this post : Tesseract OCR: is it possible to force a specific pattern? I have tried bazaar matching pattern in Tesseract with the pattern \d\d\d\A\A and ocr still recognize other words which doesn't match. I have tried to use the "tessedit_char_whitelist" parameter but I can't choose the position of the characters with that. I launch the command : tesseract image.jpg result -l eng bazaar And I have this message : Please provide at least 4 concrete characters at the beginning of the pattern Invalid user pattern \A\A\d\d\d

A friend and I are interested in training the tesseract-OCR engine for a CV project. We tried using some wrappers such as PyTesser and pyocr, but the results are currently not as accurate as we need them to be. As such, we want to try training the tesseract to perform better for our purposes (i.e. identifying text on food labels), but are having some trouble installing the training tools. What we've tried: Looking on the google code website, the 'Compiling' page on the tesseract's google code wiki says the training tools are only available on version 3.03. However, the google code 'Downloads'

I'm using the tesseract OCR plugin for phonegap: https://github.com/jcesarmobile/PhonegapOCRPlugin/i I'm trying to config tesseract to recognize complete dictionary words only. That is: no special characters, no suffixes or prefixes etc. As the tessdata folder from this project doesn't contain any configs I thought I'd set configs on init. Right now I'm trying to set configs by modifying claseAuxiliar.mm but I can't say I've noticed any difference, this might be because the configs are wrong or that I'm setting them wrong. Below are my configs and how I'm currently trying to set them: // init

I use tesseract for detecting characters on image. try { using (var engine = new TesseractEngine(@"C:\Users\ea\Documents\Visual Studio 2015\Projects\ocrtTest", "eng", EngineMode.Default)) { using (var img = Pix.LoadFromFile(testImagePath)) { Bitmap src = (Bitmap)Image.FromFile(testImagePath); using (var page = engine.Process(img)) { var text = page.GetHOCRText(1); File.WriteAllText("test.html", text); //Console.WriteLine("Text: {0}", text); //Console.WriteLine("Mean confidence: {0}", page.GetMeanConfidence()); int p = 0; int l = 0; int w = 0; int s = 0; int counter = 0; using (var iter = page

From what I understand (I could be wrong) Pix.LoadFromFile is the only way to get Pix for processing. is there any other way, such as from a bitmap? I am not professional in tesseract, but you can use the following: Bitmap bmp = (Bitmap)Bitmap.FromFile(MyImgFilePath); Pix img = PixConverter.ToPix(bmp); you can take a look at source code of PixConverter at : https://github.com/charlesw/tesseract/blob/master/src/Tesseract/PixConverter.cs 来源： https://stackoverflow.com/questions/26162169/tesseract-net-process-image-from-memory-object

I'm using Tesseract but I don't know whether it neglects any nontext area and targets text only. Do I have to remove any nontext area as a preprocessing step for better output? karlphillip Tesseract has a pretty good algorithm to detect text, but it will eventually give false-positive matches. Ideally, you would pre-process the image before submitting it to tesseract. Some time ago I engaged in a similar task, so I suggest you take a look at the following material: OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection Executing cv::warpPerspective for a fake deskewing on a set of cv: