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#include<iostream>#include<string>#include<list>#include<vector>#include<map>#include<stack>#include <opencv2/core/core.hpp>#include<opencv2/imgproc/imgproc.hpp>#include<opencv2/highgui/highgui.hpp>typedef unsigned char byte;void GetImgD_SIO(IplImage *src,byte *imagedata){ if (src->nChannels!=1) { return; } int width=src->width; int height=src->height; for(int i=0;i<height;i++) { for (int j=0;j<width;j++) { imagedata[i*width+j]=src->imageData[i*src->widthStep+j]; } }}void SetImgD_SIO(IplImage *src,byte *imagedata){ int width=src->width; int height=src->height; for(int i=0;i<height;i++) { for (int j=0;j<width;j++) { src->imageData[i*src->widthStep+j]=imagedata[i*width+j]; } }}int GetTwoValueT(byte *image,int width,int height){ int Hdata[256]; memset(Hdata,0,256*sizeof(int)); int minPixel=255; int maxPixel=0; int T=0; int TT=0; for (int i=0;i<height;i++) { for (int j=0;j<width;j++) { Hdata[image[i*width+j]]++; if (minPixel>image[i*width+j]) { minPixel=image[i*width+j]; } if (maxPixel<image[i*width+j]) { maxPixel=image[i*width+j]; } } } long IP1,IP2,SP1,SP2; int MeanG1=0; int MeanG2=0; double w0,w1; double G,tmpG; G=0; tmpG=0; for (int i=minPixel;i<=maxPixel;i++) { T=i; IP1=0; IP2=0; SP1=0; SP2=0; for (int j=minPixel;j<=T;j++) { IP1+=Hdata[j]*j; SP1+=Hdata[j]; } if (SP1!=0) { MeanG1=IP1/SP1; } else { MeanG1=0; } w0=(double)SP1/(double)(width*height); for (int j=T+1;j<=maxPixel;j++) { IP2+=Hdata[j]*j; SP2+=Hdata[j]; } if (SP2!=0) { MeanG2=IP2/SP2; } else { MeanG2=0; } w1=1-w0; G=(double)((w0*w1)*(MeanG1-MeanG2)*(MeanG1-MeanG2)); if (G>tmpG) { tmpG=G; TT=T; } } return TT;}void TwoValue(byte *imagedata,int width,int height,int T){ for(int i=0;i<height;i++) { for (int j=0;j<width;j++) { int tmp=imagedata[i*width+j]; imagedata[i*width+j]=tmp>T?0:255; } }}void icvprCcaByTwoPass(const cv::Mat& _binImg,cv::Mat& _lableImg){ if(_binImg.empty()||_binImg.type()!=CV_8UC1) { return ; } //first pass _lableImg.release(); _binImg.convertTo(_lableImg,CV_32SC1); int label=1; std::vector<int>labelSet; labelSet.push_back(0); labelSet.push_back(1); int rows=_binImg.rows-1; int cols=_binImg.cols-1; for(int i=1;i<rows;i++) { int *data_preRow=_lableImg.ptr<int>(i-1); int *data_curRow=_lableImg.ptr<int>(i); for(int j=1;j<cols;j++) { if(data_curRow[j]==1) { std::vector<int> neighborLabels; neighborLabels.reserve(2); int leftPixel=data_curRow[j-1]; int upPixel=data_preRow[j]; if(leftPixel>1) { neighborLabels.push_back(leftPixel); } if (upPixel > 1) { neighborLabels.push_back(upPixel) ; } if (neighborLabels.empty()) { labelSet.push_back(++label) ; data_curRow[j] = label ; labelSet[label] = label ; } else { std::sort(neighborLabels.begin(), neighborLabels.end()) ; int smallestLabel = neighborLabels[0] ; data_curRow[j] = smallestLabel ; // save equivalence for (size_t k = 1; k < neighborLabels.size(); k++) { int tempLabel = neighborLabels[k] ; int& oldSmallestLabel = labelSet[tempLabel] ; if (oldSmallestLabel > smallestLabel) { labelSet[oldSmallestLabel] = smallestLabel ; oldSmallestLabel = smallestLabel ; } else if (oldSmallestLabel < smallestLabel) { labelSet[smallestLabel] = oldSmallestLabel ; } } } } } } for (size_t i = 2; i < labelSet.size(); i++) { int curLabel = labelSet[i] ; int preLabel = labelSet[curLabel] ; while (preLabel != curLabel) { curLabel = preLabel ; preLabel = labelSet[preLabel] ; } labelSet[i] = curLabel ; } for (int i = 0; i < rows; i++) { int* data = http://www.mamicode.com/_lableImg.ptr<int>(i) ; for (int j = 0; j < cols; j++) { int& pixelLabel = data[j] ; pixelLabel = labelSet[pixelLabel] ; } }}cv::Scalar icvprGetRandomColor(){ uchar r = 255 * (rand()/(1.0 + RAND_MAX)); uchar g = 255 * (rand()/(1.0 + RAND_MAX)); uchar b = 255 * (rand()/(1.0 + RAND_MAX)); return cv::Scalar(b,g,r) ;}void icvprLabelColor(const cv::Mat& _labelImg, cv::Mat& _colorLabelImg) { if (_labelImg.empty() || _labelImg.type() != CV_32SC1) { return ; } std::map<int, cv::Scalar> colors ; int rows = _labelImg.rows ; int cols = _labelImg.cols ; _colorLabelImg.release() ; _colorLabelImg.create(rows, cols, CV_8UC3) ; _colorLabelImg = cv::Scalar::all(0) ; for (int i = 0; i < rows; i++) { const int* data_src = http://www.mamicode.com/(int*)_labelImg.ptr<int>(i) ; uchar* data_dst = _colorLabelImg.ptr<uchar>(i) ; for (int j = 0; j < cols; j++) { int pixelValue =http://www.mamicode.com/ data_src[j] ; if (pixelValue > 1) { if (colors.count(pixelValue) <= 0) { colors[pixelValue] = icvprGetRandomColor() ; } cv::Scalar color = colors[pixelValue] ; *data_dst++ = color[0] ; *data_dst++ = color[1] ; *data_dst++ = color[2] ; } else { data_dst++ ; data_dst++ ; data_dst++ ; } } }}int main(int argc,char **argv){ IplImage* img1 = cvLoadImage("E:/newocr/ocr/big.jpg", 1); int width=img1->width; int height=img1->height; std::cout<<width<<" "<<height<<std::endl; byte *imagedata=http://www.mamicode.com/new byte[width*height]; GetImgD_SIO(img1,imagedata); int T=GetTwoValueT(imagedata,width,height); std::cout<<T<<std::endl; TwoValue(imagedata,width,height,T); for (int i=0;i<height;i++) { for (int j=0;j<width;j++) { if (imagedata[i*width+j]==255) { imagedata[i*width+j]=1; } } } SetImgD_SIO(img1,imagedata); cv::Mat binImage(img1); cv::imshow("test1",binImage); //cv::Mat binImage = cv::imread("E:/newocr/ocr/big.jpg", 0) ; //cv::imshow("test",binImage); //cv::threshold(binImage,binImage,50,1,CV_THRESH_BINARY_INV); /* cv::Mat labelImg; icvprCcaByTwoPass(binImage,labelImg); //cv::imshow("test1",binImage); //cv::imshow("test2",labelImg); cv::Mat grayImg ; labelImg *= 10 ; labelImg.convertTo(grayImg, CV_8UC1) ; cv::imshow("labelImg", grayImg) ; cv::Mat colorLabelImg ; icvprLabelColor(labelImg, colorLabelImg) ; cv::imshow("colorImg", colorLabelImg) ;*/ cv::waitKey(0); }
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