tesseract

问题 I have a pdf that I have converted to .png at 500dpi and 600dpi. (see below). The 500dpi version works just fine with jTessBoxEditor. But, the 600dpi one fails. I have tried increasing the JVM heap size as suggested here. Even the 600 dpi image is only 91KB. Even when I set the JVM heap size quite large, by running jTessBoxEditor as: export JAVA_HOME="/Library/Internet Plug-ins/JavaAppletPlugin.plugin/Contents/Home/" ## necessary to get latest java runtime environment because I am on a mac.

问题 I'm taking a screenshot of a window in order to proccess it with Leptonica and later do some OCR with Tesseract The problem is, performance wise I would like to avoid writing and reading the BMP to the disc and just work in memory instead. This is how I make the screenshot: int width, height = 0; HDC hdcWindow; HDC hdcMemDC = NULL; HBITMAP hbmScreen = NULL; BITMAP bmpScreen; // Retrieve the handle to a display device context for the client // area of the window. //hdcScreen = GetDC(NULL); /

问题 I'm having an issue at the moment with Imagemagick and Tesseract. I'm working on a command-line classifier for documents in PHP. The idea is that it takes in PDF documents and uses the League Pipeline package to pass it through numerous steps. The steps I've identified as necessary are as follows: Convert PDF to a PNG file Extract text from PNG file Run text through a machine learning library to classify it The main command for that looks like this: <?php namespace Matthewbdaly

问题 I'm trying to use pytesseract to recognize two numbers from an image: I have tried --psm 6 up to 10 I have tried -c tessedit_char_whitelist=0123456789' None of the above returns 49 number. Closest I got is returned 4 without 9 Do you have any tips about how to make tesseract recognize it ? 回答1: Try --psm 13 --oem 3 ( oem = 1 or 2 should do also) import pytesseract from PIL import Image import requests import io response = requests.get('https://i.stack.imgur.com/oAAXR.png') text = pytesseract

问题 I am trying to recognize one line of handwritten digits. Currently I do some preprocessing with Python and OpenCV, split the image into connected components and feed these components to Tesseract with PSM=10 (page segmentation mode, 10 is "treat the image like a single character") and character whitelist restricted to "0123456789". I expect Tesseract to return garbage where my connected component segmentation fails and to return exactly one digit when my segmentation succeeds. Tesseract often

问题 Working on an OCR. I can import pytesseract and use image_to_string but I want to work on this: api = tesseract.TessBaseAPI() api.SetVariable("tessedit_char_whitelist", "0123456789") api.Init('.','eng',tesseract.OEM_DEFAULT) api.SetPageSegMode(tesseract.PSM_AUTO) This is to set tesseract to detect only numbers or alphabets. When I run my code I get this error: ImportError: No module named tesseract I have tesseract-ocr installed, and pytesseract as well. Yet I keep getting this error. 回答1: I

问题 I have data which in a structured table image. The data is like below: I tried to extract the text from this image using this code: import pytesseract from PIL import Image value=Image.open("data/pic_table3.png") text = pytesseract.image_to_string(value, lang="eng") print(text) and, here is the output: EA Domains Traditional role Future role Technology e Closed platforms ¢ Open platforms e Physical e Virtualized Applicationsand |e Proprietary e Inter-organizational Integration e Siloed

问题 I have data which in a structured table image. The data is like below: I tried to extract the text from this image using this code: import pytesseract from PIL import Image value=Image.open("data/pic_table3.png") text = pytesseract.image_to_string(value, lang="eng") print(text) and, here is the output: EA Domains Traditional role Future role Technology e Closed platforms ¢ Open platforms e Physical e Virtualized Applicationsand |e Proprietary e Inter-organizational Integration e Siloed

问题 I've installed tesseract on my linux environment. It works when I execute something like # tesseract myPic.jpg /output But my pic has some little labels and tesseract didn't see them. Is an option is available to set a pitch or something like that ? Example of text labels: With this pic, tesseract doesn't recognize any value... But with this pic: I have the following output: J8 J7A-J7B P7 \ 2 40 50 0 180 190 200 P1 P2 7 110 110 \ l For example, in this case, the 90 (on top left) is not seen