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2018年11月6日星期二

EAST text detector

git clone https://github.com/argman/EAST EAST
下載 east_icdar2015_resnet_v1_50_rbox.zip 從
https://drive.google.com/open?id=0B3APw5BZJ67ETHNPaU9xUkVoV0U

Open
VS2015 x64 Native Tools Command Prompt
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC>
D:\OpenCV_4\OpenCV OCR\EAST\lanms>activate tensorflow
(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST\lanms>python --version
Python 3.5.5 :: Anaconda, Inc.D:\OpenCV_4\OpenCV OCR\EAST\lanms>cl adaptor.cpp .\include\clipper\clipper.cpp /I .\include /I "D:\Anaconda3\include" /LD /Fe:adaptor.pyd /link/LIBPATH:"D:\Anaconda3\libs"

Edit lanms/__init__.py 註解掉下兩行

#if subprocess.call(['make', '-C', BASE_DIR]) != 0: # return value

# raise RuntimeError('Cannot compile lanms: {}'.format(BASE_DIR))

Edit run_demo_server.py

change

parser.add_argument('--checkpoint-path', default=checkpoint_path)

parser.add_argument('--checkpoint_path', default=checkpoint_path)

並註解掉

#ret.update(get_host_info())

期間因為 tensorflow 使用 python3.5

但是程式使用的 python36.lib, 所以移除掉 tensorflow, 重新安裝

查詢已安裝的模組，等待環境完成，重新安裝(沒有使用)

pip freeze>requirements.txt

pip install -r requirements.txt

查詢已安裝的模組

(tensorflow) D:\>conda list

(base) D:\>conda env remove -n tensorflow

(base) D:\>conda create -n tensorflow pip python=3.6

(base) D:\>activate tensorflow

(tensorflow) D:\>pip install --ignore-installed --upgrade tensorflow-gpu

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install opencv-python

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install opencv-contrib-python

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install --ignore-installed --upgrade tensorflow-gpu

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install scipy

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install matplotlib

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>pip install Flask

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>conda install shapely

(tensorflow) D:\OpenCV_4\OpenCV OCR\EAST>python run_demo_server.py --checkpoint_path="..\east_icdar2015_resnet_v1_50_rbox"

2018年11月1日星期四

Build OpenCV v4

目前最新的版本為 4.0.0, 穩定版本 3.4.3
查詢 opencv 版本
opencv_src\modules\core\include\opencv2\core\version.hpp

查詢 python 版本

(base) D:\OpenCV_4>python --version

Python 3.6.4 :: Anaconda, Inc.

CUDA 使用 10 版，9 or 9.1 都不行

下載 OpenCV 最新版本

(base) D:\OpenCV_4>git clone https://github.com/opencv/opencv opencv

下載指定版本

(base) D:\OpenCV_4>git clone https://github.com/opencv/opencv --branch 3.4 opencv34

更新之前下載的程式到遠端的最新版本

(base) D:\OpenCV_4\opencv>git pull origin master

Eigen 是一個 C++ 程式庫，支持線性代數，矩陣，向量運算

http://eigen.tuxfamily.org

解壓縮後移至 D:\OpenCV_4\dep

Intel TBB Library 不需安裝

用 Intel IPP 即可

MikTex 排版軟體

http://miktex.org/

(base) D:\OpenCV_4>python -m pip install --upgrade pip

Sphinx Python文件生成工具，支持 LaTeX(可以產生PDF)

(base) D:\OpenCV_4>pip install sphinx

NumPy 是Python語言的一個擴充程式庫。支援高階大量的維度陣列與矩陣運算。

(base) D:\OpenCV_4>pip install numpy

Visual Studio Installer 安裝

個別元件/VC++ 2017 v141 工具組

OpenCV 的額外模組

git clone https://github.com/opencv/opencv_contrib open_contrib

git clone https://github.com/opencv/opencv_contrib --branch 3.4 open_contrib_3.4

CMake

D:/OpenCV_4/opencv

D:/OpenCV_4/build_64

Visual Studio 14 2015 Win64

EIGEN_INCLUDE_PATH=D:/OpenCV_4/dep/eigen-eigen-b3f3d4950030

OPENCV/OPENCV_EXTRA_MODULES_PATH=D:\OpenCV_4\opencv34\modules
BUILD/BUILD_EXAMPLES checked

opencv_cudev 專案出現 LNK2019 cv::__termination 錯誤

修改 modules/opencv_cudev/CMakeLists.txt, 在

set(the_description "CUDA device layer")

增加下一行

set(OPENCV_SKIP_DLLMAIN_GENERATION ON)

opencv_cvv 專案 stringutils.cpp 出現 C2001, C2143, C2146 等錯誤

是因為檔案字元集的問題，開啟 stringutils.cpp, 重新存檔成

UTF-8 with signature

以下增加 Tesseract 功能，參考 Tesseract OCR 安裝
修改 modules/opencv_text/CMakeLists.txt, 增加下一行
set(Tesseract_FOUND 1)
if(NOT CMAKE_CROSSCOMPILING OR OPENCV_FIND_TESSERACT)

修改 opencv_text Property Pages/Configuration Properties/
C/C++/General/Additional Include Directories 增加
C:\Program Files\tesseract\include
Linker/General/Additional Library Directories 增加
D:\TensorFlow\OCR\tesseract\win64\Debug
C:\Program Files\tesseract\lib
Linker/Input/Additional Dependencies 增加

tesseract40d.lib (Debug)

tesseract40.lib (Release)

2018年10月26日星期五

Tesseract OSD_example.cpp

// 參照 Tesseract API for VS2017

// 決定頁面，行到行，字到字的方向

#include "pch.h"
#include <iostream>

#include <tesseract/baseapi.h>
#include <leptonica/allheaders.h>

int main()
{
// 頁面方向
static const char* const sOrientation[] {
"PAGE_UP",
"PAGE_RIGHT",
"PAGE_DOWN",
"PAGE_LEFT",
};
// 字到字的方向
static const char* const sWritingDirection[] {
"LEFT_TO_RIGHT",
"RIGHT_TO_LEFT",
"TOP_TO_BOTTOM",
};
// 行到行的方向
static const char* const sTextlineOrder[]{
"LEFT_TO_RIGHT",
"RIGHT_TO_LEFT",
"TOP_TO_BOTTOM",
};

Pix *image = pixRead("D:\\TensorFlow\\OCR\\aaa.png");
tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
if (api->Init(NULL, "eng")) {
std::cerr << "Could not initialize tesseract.\n";
}
api->SetPageSegMode(tesseract::PSM_AUTO_OSD);
api->SetImage(image);
api->Recognize(0);
tesseract::PageIterator* it = api->AnalyseLayout();
tesseract::PageIteratorLevel level = tesseract::RIL_WORD;
if (it != 0) {
do {
tesseract::Orientation orientation;
tesseract::WritingDirection direction;
tesseract::TextlineOrder order;
float deskew_angle;

it->Orientation(&orientation, &direction, &order, &deskew_angle);
printf("Orientation: %s;\nWritingDirection: %s\nTextlineOrder: %s\n" \
"Deskew angle: %.4f\n",
sOrientation[orientation], sWritingDirection[direction],
sTextlineOrder[order], deskew_angle);
int left, top, right, bottom;
it->BoundingBox(level, &left, &top, &right, &bottom);
printf("BoundingBox: (%d, %d) (%d, %d)\n",
left, top, right, bottom);
} while (it->Next(level));
}

api->End();
pixDestroy(&image);
}

Tesseract ResultIterator.cpp

// 參照 Tesseract API for VS2017

// 依據字符辨識，列出所有候選字

#include "pch.h"

#include <iostream>

#include <tesseract/baseapi.h>

#include <leptonica/allheaders.h>

int main()

{

Pix *image = pixRead("D:\\TensorFlow\\OCR\\aaa.png");

tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();

if (api->Init(NULL, "eng")) {

std::cerr << "Could not initialize tesseract.\n";

}

api->SetPageSegMode(tesseract::PSM_AUTO_OSD);

api->SetImage(image);

api->Recognize(0);

tesseract::ResultIterator* ri = api->GetIterator();

tesseract::PageIteratorLevel level = tesseract::RIL_SYMBOL;

//tesseract::PageIteratorLevel level = tesseract::RIL_TEXTLINE;

if (ri != 0) {

do {

const char* word = ri->GetUTF8Text(level);

float conf = ri->Confidence(level);

int x1, y1, x2, y2;

ri->BoundingBox(level, &x1, &y1, &x2, &y2);

printf("word: '%s'; \tconf: %.2f; BoundingBox: %d,%d,%d,%d;\n",

word, conf, x1, y1, x2, y2);

if (level = tesseract::RIL_SYMBOL) {

// 列出所有可能的候選字

tesseract::ChoiceIterator ci(*ri);

do {

const char* choice = ci.GetUTF8Text();

printf("\t\t%s conf: %f\n", choice, ci.Confidence());

} while (ci.Next());

printf("---------------------------------------------\n");

}

delete[] word;

} while (ri->Next(level));

}

api->End();

pixDestroy(&image);

}

Tesseract GetComponentImages.cpp

// 參照 Tesseract API for VS2017
// 依據行辨識

int main()

{

Pix *image = pixRead("D:\\temp\\OpenCV_err.png");

tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();

if (api->Init(NULL, "eng")) {

std::cerr << "Could not initialize tesseract.\n";

}

api->SetImage(image);

Boxa* boxes = api->GetComponentImages(tesseract::RIL_TEXTLINE, true, NULL, NULL);

fprintf(stdout, "Found %d textline image components.\n", boxes->n);

for (int i = 0; i < boxes->n; i++) {

BOX* box = boxaGetBox(boxes, i, L_CLONE);

api->SetRectangle(box->x, box->y, box->w, box->h);

char* ocrResult = api->GetUTF8Text();

int conf = api->MeanTextConf();

fprintf(stdout, "Box[%d]: x=%d, y=%d, w=%d, h=%d, confidence: %d, text: %s",

i, box->x, box->y, box->w, box->h, conf, ocrResult);

delete[] ocrResult;

}

api->End();

pixDestroy(&image);

}

Tesseract BasicExample.cpp

// 參照 Tesseract API for VS2017
// 整張圖片一次辨識
#include "pch.h"
#include <iostream>

#include <tesseract/baseapi.h>
#include <leptonica/allheaders.h>

int main()
{
char *outText = NULL;
tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
// 英文加中文
if (api->Init(NULL, "eng+chi_tra")) {
std::cerr << "Could not initialize tesseract.\n";
}
Pix *image = pixRead("D:\\TensorFlow\\OCR\\bbb.png");
// 以下兩行，可擇一或都不執行
api->SetPageSegMode(tesseract::PSM_SINGLE_BLOCK); // 預設值
//api->SetPageSegMode(tesseract::PSM_SINGLE_LINE);
api->SetImage(image);
//api->SetRectangle(40, 5, 150, 30);
outText = api->GetUTF8Text();
// 要顯示中文要經很多轉換
int len = ::MultiByteToWideChar(CP_UTF8, NULL, outText, -1, NULL, 0);
wchar_t* wszString = new wchar_t[len + 1];
::MultiByteToWideChar(CP_UTF8, NULL, outText, -1, wszString, len);
wszString[len] = '\0';
len = ::WideCharToMultiByte(CP_ACP, 0, wszString, -1, NULL, 0, NULL, NULL);
char* szBig5 = new char[len + 1];
::WideCharToMultiByte(CP_ACP, 0, wszString, -1, szBig5, len, NULL, NULL);
szBig5[len] = '\0';

std::cout << "=======================\n";
std::cout << outText << "\n";
std::cout << "=======================\n";
std::cout << wszString << "\n";
std::cout << "=======================\n";
std::cout << szBig5 << "\n";
std::cout << "=======================\n";
api->End();
if (outText) delete[] outText;
if (wszString) delete[] wszString;
pixDestroy(&image);
}

Tesseract API for VS2017

參照 Tesseract OCR 安裝

c:\users\userName\.cppan\stroage 目錄下搜尋 leptonica
可以找到 C:\Users\userName\.cppan\storage\src\8f\a3\90d7\src 目錄

拷貝所有檔案至 C:\Program Files\tesseract\include\leptonica

VS2013 不能編譯, VS2017 才可以

Property Pages/Platform 選 x64

Property Pages/Configuration 選 Debug

Property Pages/Configuration Properties/Debugging/Environment

PATH=%PATH%;D:\TensorFlow\OCR\tesseract\win64\bin\Debug

Property Pages/Configuration Properties/C/C++/General/Additional Include Directories

新增 C:\Program Files\tesseract\include

Property Pages/Configuration Properties/Linker/General/Additional Library Directories

新增 D:\TensorFlow\OCR\tesseract\win64\Debug

Property Pages/Configuration Properties/Linker/Input/Additional Dependencies

新增 tesseract40d.lib

新增 pvt.cppan.demo.danbloomberg.leptonica-1.76.0.lib

Property Pages/Platform 選 x64

Property Pages/Configuration 選 Release

Property Pages/Configuration Properties/Debugging/Environment

PATH=%PATH%;C:\Program Files\tesseract\bin

Property Pages/Configuration Properties/C/C++/General/Additional Include Directories

新增 C:\Program Files\tesseract\include

Property Pages/Configuration Properties/Linker/General/Additional Library Directories

新增 C:\Program Files\tesseract\lib

Property Pages/Configuration Properties/Linker/Input/Additional Dependencies

新增 tesseract40.lib

新增 pvt.cppan.demo.danbloomberg.leptonica-1.76.0.lib

執行 Debug 程式時，若是使用 Release 的 lib, delete GetUTF8Text() 產生的記憶體
會產生 Exception

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2018年11月6日 星期二

2018年11月1日 星期四

2018年10月26日 星期五

2018年11月6日星期二

2018年11月1日星期四

2018年10月26日星期五