tesseract

Android Tesseract App crashes on OCR Function

由 安稳与你 提交于 2019-12-09 23:25:18
问题 I am trying to implement Tesseract into my android project but am getting a crash when trying to complete the OCR. Here is how I'm setting up Tesseract: TessBaseAPI baseApi = new TessBaseAPI(); baseApi.setDebug(true); baseApi.init(imagePath, "eng"); baseApi.setImage(bitmap); String recognizedText = baseApi.getUTF8Text(); baseApi.end(); This is how I'm setting up the image information to pass into the TesseractAPI: destination = new File(Environment.getExternalStorageDirectory(), name + ".png"

How to give best chance of success to an OCR software?

由 走远了吗. 提交于 2019-12-09 22:58:38
问题 I am using Tesseract OCR (via pytesser) and PIL (Python Image Library) for automated test of an application. I am checking that the displayed text is ok by making a screenshot and getting the text thanks to tesseract. I had some issues in the beginning and it seems to work better since I have increased the size of the screenshot thanks to the bicubic interpolation of PIL. Unfortunatelly, I still have some mistakes like confusion between '0' and 'O'. I can imagine that I will have other

Tesseract OCR Camera

由 霸气de小男生 提交于 2019-12-09 19:57:11
问题 I'm using Tesseract OCR 3.01 in my iOS application, it shows 90% accuracy for my data when I pick an image from my phone’s library. But if I use the same image from the camera, it is showing jumbled letters. I followed this tutorial, kindly guide me if something can be done to make sure it works from camera as it works for gallery images. 回答1: Almost for sure the problem is "orientation". Apple tends to create images in one bit map form - the image bits are laid out as if the camera was on

Strength of Dictionary in Tesseract 3

由 淺唱寂寞╮ 提交于 2019-12-09 15:27:23
问题 How do I increase/decrease the strength of the dictionary in tesseract 3 ? In the FAQ it says I need to change the value of "NON_WERD" and "GARBAGE_STRING" but they do not exist in Tesseract 3. 回答1: According to http://code.google.com/p/tesseract-ocr/wiki/FAQ, you change these variables: enable_new_segsearch 1 language_model_penalty_non_freq_dict_word 0.2 language_model_penalty_non_dict_word 0.3 Increase their values to make Tesseract more biased to dictionary words. Note: You must set enable

Character Recognition using tesseract

由 余生颓废 提交于 2019-12-09 13:50:16
问题 I am trying to interact with tesseract API also I am new to image processing and I am just struggling with it for last few days. I have tried simple algorithms and I have achieved around 70% accuracy. I want its accuracy to be 90+%. The problem with the images is that they are in 72dpi. I also tried to increase the resolution but did not get good results the images which I am trying to be recognized are attached. Any help would be appreciated and I am sorry if I asked something very basic.

Tesseract or any other OCR lib

由 a 夏天 提交于 2019-12-09 11:41:23
问题 I'm looking for an explanation / API doc / examples of how to use (and train?) Tesseract in C++, nothing useful on the google Tesseract page, and yet to find something over the web. Anyone useful sources, experiences would be more than welcome, as I have no idea how to begin with it. P.S: I'm open for suggestions on other libraries. Only FREE libraries 回答1: I have some experience with Tesseract... a simple google of 'training tesseract' reveals this page: http://code.google.com/p/tesseract

Open-CV - Not loading correctly

由 回眸只為那壹抹淺笑 提交于 2019-12-09 10:48:41
问题 I'm using Ubuntu 14.04 and I'm trying to compile this code, but I get these errors no matter what, I believe it has something to do with including the OpenCV library, but I'm not sure. Could anyone help me out? Errors: main.cc:66:37: error: ‘CV_RETR_EXTERNAL’ was not declared in this scope main.cc:66:55: error: ‘CV_CHAIN_APPROX_NONE’ was not declared in this scope main.cc:81:28: error: ‘CV_BGR2GRAY’ was not declared in this scope The Code(sorry for the formatting, I just can't get this right)

How to get the co-ordinates of the text recogonized from Image using OCR in python

由 流过昼夜 提交于 2019-12-09 08:21:27
I am trying to get the coordinates or positions of text character from an Image using Tesseract. I want to know the exact pixel position, so that i can click that text using some other tool. Edit : import pytesseract from pytesseract import pytesseract import PIL from PIL import Image import cv2 import csv img = 'E:\\OCR-DATA\\sample.jpg' imge = Image.open(img) data=pytesseract.image_to_string(imge,lang='eng',boxes=True,config='hocr') print(data) data contains recognized text with box boundary value. But i am not sure , how to use that boundary value to get the co-ordinates of the text. Value

Sharpening image using OpenCV OCR

由 两盒软妹~` 提交于 2019-12-09 06:24:03
问题 I've been trying to work on an image processing script /OCR that will allow me to extract the letters (using tesseract ) from the boxes found in the image below. Following alot of processing, I was able to get the picture to look like this In order to remove the noise I inverted the image followed by floodfilling and gaussian blurring to remove noise. This is what I ended up with next. After running it through some threholding and erosion to remove the noise (erosion being the step that

Tesseract OCR Text Position

由 瘦欲@ 提交于 2019-12-09 04:53:12
问题 I am working on OCR using tesseract. I am able to make the application working and get the output. Here i'm trying to extract data from an invoice bill and getting the extracted data. But the spacing between words in input has to be similar in output file.I am now getting each words and coordinates.I need to export to text file according to coordinates Code Sample : using (var engine = new TesseractEngine(Server.MapPath(@"~/tessdata"), "eng", EngineMode.Default)) { engine.DefaultPageSegMode =
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