Article directory 1. Development platform 2. Download files 2.1 Download and install the OpenCV library 2.2 Download and install the Tesseract-OCR library 2.3 Download the trained language package 3. CMakeLists.txt content 4. Main.cpp 4.1 Mixed Chinese and English OCR 5. Set up CMake + vcpkg in Qt Creator 5.1 Modify in the initialization configuration file […]
Tag: tesseract
Using OpenCV + Tesseract to identify image verification code – Stack Overflow
Directory Use of Tesseract Recognition effect Image processing with OpenCV Recognition effect Tesseract custom model training Recognition effect Usage of Tesseract 1. Introduce tess4j dependency: <dependency> <groupId>net.sourceforge.tess4j</groupId> <artifactId>tess4j</artifactId> <version>5.8.0</version> </dependency> 2. Download the training data of the relevant language and put it in the directory specified by the project; download address: https://gitcode.net/mirrors/tesseract-ocr/tessdata For example, to […]
Install OCR recognition tool tesseract on Linux
Reference blog: [Tools] Linux installation of OCR recognition tool tesseract – Jianshu Reference website: https://github.com/tesseract-ocr/tessdata 1 Install dependencies yum install -y libpng-devel libjpeg-devel libtiff-devel 2 Install leptonica Download leptonica-1.78, download address: http://www.leptonica.org/source/leptonica-1.78.0.tar.gz Unzip and install tar -xzvf leptonica-1.78.0.tar.gz cd leptonica-1.78.0 ./configure make & amp; & amp; make install When ./configure reports an error, you can […]
.NET PDF to text (Tesseract OCR + O2S)
Environment setup refer to: Tesseract OCR: .NET Tesseract OCR – Nuggets (juejin.cn) O2S: .NET Convert PDF to image via O2S – Juejin (juejin.cn) Code integration Create OCRHelper.cs using O2S.Components.PDFRender4NET; using System.Drawing; using System.Text.RegularExpressions; using Tesseract; namespace OCR_8 { public static class OCRHelper { private static string imagePath = $”{Environment.CurrentDirectory}/ocr_file/image_{GuidTo16String()}”; private static string tesseractPath = $@”Z:\.net_project\OCR_8\OCR_8\tesseract”; […]
Android offline text recognition-tesseract4android call
Android online text recognition can adjust Alibaba Cloud’s interface Android text recognition-Alibaba Cloud OCR call__Huahua’s blog-CSDN blog If you need offline text recognition, you can adjust tesseract4android. Personal test results are not particularly ideal, but the speed is really fast. VIVO S10 takes photos from behind and completes the recognition within 80ms. A lot of […]
.NET PDF to text (Tesseract OCR + PdfiumViewer)
Environment setup refer to: Tesseract OCR: .NET Tesseract OCR – Nuggets (juejin.cn) PdfiumViewer: .NET Convert PDF to image using PdfiumViewer – Nuggets (juejin.cn) Code integration Create OCRHelper.cs using System; using System.IO; using System.Text.RegularExpressions; using Tesseract; namespace OCR_7 { public static class OCRHelper { private static string imagePath = $”{Environment.CurrentDirectory}/ocr_file/image_{GuidTo16String()}”; private static string tesseractPath = $@”Z:\.net_project\OCR_7\OCR_7\file\tesseract”; […]
[AI test] python text image recognition tesseract
[AI test] python text image recognition tesseract Github official website: https://github.com/tesseract-ocr/tesseract python version: https://github.com/madmaze/pytesseract OCR, or Optical Character Recognition, refers to the process of scanning characters and then translating them into electronic text through their shapes. For graphic verification codes, they are all irregular characters, and these characters are indeed the content obtained by slightly […]
Text recognition tesseract–ORC (py version)
Introduction A commonly used Python library for identifying text in images is Tesseract. Tesseract is a free and open source OCR (Optical Character Recognition) engine that can recognize text in multiple languages. 1. Download and install Download address: Index of /tesseract Select the latest version to download. After the download is complete, unzip and install […]
[AI test] python text image recognition tesseract
[AI test] python text image recognition tesseract It’s Chinese Valentine’s Day, let’s learn some knowledge! Github official website: https://github.com/tesseract-ocr/tesseract python version: https://github.com/madmaze/pytesseract OCR, Optical Character Recognition, refers to the process of scanning characters and then translating them into electronic text through their shapes. For graphic verification codes, they are all irregular characters, and these characters […]
vs2019+tesseract5.3.2+leptonica1.83.1 Compilation strategy based on CMake source code
Since the online Tesseract compilation tutorial is either based on CPP (Tesseract5.0 no longer uses cppan as a package dependency manager) or VCPKG, SW, such as using VCPKG to compile and generate dll, it is inconvenient for project management, because the name of the generated dll cannot be controlled, and may be different from The […]