tesseract

问题 I have trained tesseract on the terminus font, but no matter what, I can't get it to recognize the 0s. I am using the jTessEditor to create the training tif and boxes. Even when validating, it reads all 0s as 8s. Is there anything I am missing? Here is an example of the 0 and it reading it as 8: I use the following parameters: --psm 10 -c tessedit_char_whitelist=0123456789# --oem 3 -l terminus 来源： https://stackoverflow.com/questions/53090447/tesseract-ocr-confuses-slashed-0-as-8

问题 I am using tess-two library and I wish to convert all the colors other than black in my image to white (Black will be text). Thus making it easier for the tess-two to read the text. I have tried various methods but they are taking too much time as they convert pixel by pixel. Is there a way to achieve this using canvas or anything that give results faster. UPDATE Another problem that came up with this algorithm is that printer doesn't print with the same BLACK and White as in android. So the

问题 I am having the tesseract-android-tools 1.00, please help me to use the interface TessBaseAPI. I juss want to pass one .jpg image to an android application which is having some text as a part of image. then through this tesseract engine i want to extract those text into editable format.. please help to create this application in android... 回答1: Did you ever search in the internet for a manual? There are a lot of hints. Recently someone wrote a small tutorial. Even it is for Ubuntu, but I

问题 I've downloaded an OCR text recognizer from github. My problem is: I want to launch my app without being online, but everytime I install the apk on my phone, it starts downloading the english language and the tesseract OCR engine. I've found an online guide which says I have to create a folder in the assets folder called "tessdata" and put the eng.traineddata and the osd.traineddata in this folder. I've tried but the download process still starts when I install the app for the first time.

问题 I'm trying to train tesseract with Serak Tesseract Trainer:https://code.google.com/p/serak-tesseract-trainer/ and I can't figure out why the following error in the CMD is happening while executing Train Tesseract. Any help? Reading a.tr ... Font id = -1/0, class id = 1/46 on sample 0 font_id >= 0 && font_id < font_id_map_.SparseSize():Error:Assert failed:in file ..\classify\trainingsampleset.cpp, line 622 回答1: Before writing your font data put '\n' char beginig of the file(just hit enter).

问题 I write a snippet using ctypes and tesseract 3.0.2 referring to the example: import ctypes from PIL import Image libname = '/opt/tesseract/lib/libtesseract.so.3.0.2' tesseract = ctypes.cdll.LoadLibrary(libname) api = tesseract.TessBaseAPICreate() rc = tesseract.TessBaseAPIInit3(api, "", 'eng') filename = '/opt/ddl.ddl.exp654.png' text_out = tesseract.TessBaseAPIProcessPages(api, filename, None, 0) result_text = ctypes.string_at(text_out) print result_text It passes filename as a parameter, I

问题 Installed Tesseract to do some OCR testing with Selenium WebDriver (Java). This is my maven dependency for Tess4J <dependency> <groupId>net.sourceforge.tess4j</groupId> <artifactId`enter code here`>tess4j</artifactId> <version>2.0.0</version> <scope>test</scope> </dependency> Installed Tesseract 3.03.00 via brew. Setup TESSDATA_PREFIX to the path /usr/local/Cellar/tesseract/3.04.00/share/tessdata But, actually, when I did the following command sudo find / -name tessdata I found that tessdata

问题 i'm wondering what is the best method to train Tesseract (kind of text/TIFF and so on) for a particular kind of documents, with these particularities: the structure and main text of the documents is always the same the only things that change are 5 alphanumeric codes (THIS ARE THE REAL IMPORTANT THING TO DETECT!) Some of thes codes are bold At the moment I used standard trained datas, I detect the entire text and I extrapolate the codes with some regular expressions. It's okay, but I've got

问题 I wanted to perform text recognition from images and I want to use Python. I installed Anaconda. Now I want to install Tesseract but I also need to install Leptonica. I did not find any clear instruction how to do it in windows. For Leptonica I do not want to install Visual Studio. So could anybody provide clear instructions how to install leptonica and tesseract on Windows without Visual Studio to use in anaconda ? Thanks. 回答1: Here is simple set of steps to have tesseract 3.05 dev version

问题 I am new to tesseract OCR. I tried to convert an image to tif and run it to see what the output from tesseract using cmd in windows, but I couldn't. Can you help me? What will be command to use? Here is my sample image: 回答1: The simplest tesseract.exe syntax is tesseract.exe inputimage output-text-file . The assumption here, is that tesseract.exe is added to the PATH environment variable. You can add the -psm N argument if your text argument is particularly hard to recognize. I see that the