问题描述

求图像连通区域数的一个代码一直提示vector subscript out of range,求问

skin是用来提取肤色区域的，不加这段可以正常运行，加了就不行了
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;
using namespace cv;

void Two_Pass(const cv::Mat& binImg, cv::Mat& lableImg) //两遍扫描法
{
if (binImg.empty() ||
binImg.type() != CV_8UC1)
{
cout<<"no picture"<<endl;
return;
}

// 第一个通路

lableImg.release();
binImg.convertTo(lableImg, CV_32SC1);

int label = 1;
std::vector 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(i-1);
int* data_curRow = lableImg.ptr(i);
for (int j = 1; j < cols; j++)
{
if (data_curRow[j] == 1)
{
std::vector 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);  // 不连通，标签+1
      data_curRow[j] = label;
      labelSet[label] = label;
    }
    else
    {
      std::sort(neighborLabels.begin(), neighborLabels.end());
      int smallestLabel = neighborLabels[0];
      data_curRow[j] = smallestLabel;

      // 保存最小等价表
      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;
        }
      }
    }
  }
}

}

// 更新等价对列表
// 将最小标号给重复区域
cout<<labelSet.size();
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 = lableImg.ptr(i);
for (int j = 0; j < cols; j++)
{
int& pixelLabel = data[j];
pixelLabel = labelSet[pixelLabel];

}
}
}
//彩色显示
cv::Scalar GetRandomColor()
{
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 LabelColor(const cv::Mat& labelImg, cv::Mat& colorLabelImg)
{
if (labelImg.empty() ||
labelImg.type() != CV_32SC1)
{
return;
}

std::map 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 = (int*)labelImg.ptr(i);
uchar* data_dst = colorLabelImg.ptr(i);
for (int j = 0; j < cols; j++)
{
int pixelValue = data_src[j];
if (pixelValue > 1)
{
if (colors.count(pixelValue) <= 0)
{
colors[pixelValue] = GetRandomColor();
}

    cv::Scalar color = colors[pixelValue];
    *data_dst++   = color[0];
    *data_dst++ = color[1];
    *data_dst++ = color[2];
  }
  else
  {
    data_dst++;
    data_dst++;
    data_dst++;
  }
}

}
}

Mat skin(Mat &img){
Mat out;

medianBlur( img, out, 15);

  // GaussianBlur(image,out,Size(17,17),0,0);

   //遍历图像得到符合肤色特征的像素点 记录于count

   int count=0;

   for(int i=0;i<out.rows;i++)
  {
      for(int j=0;j<out.cols;j++)
      {
          int r,g,b;   //图像的R,G,B信息
          b=out.at<Vec3b>(i,j)[0];
          g=out.at<Vec3b>(i,j)[1];
          r=out.at<Vec3b>(i,j)[2];
        //  if(i==100&&j==i)cout<<r<<","<<g<<","<<b<<endl;
          double iYIQ,Cr,Cb;   //YIQ,YCbCr颜色空间的I，Cr,Cb值，由转换公式获得
          iYIQ = 0.596*(double)r - 0.275*(double)g - 0.321*(double)b;
          Cb = -0.148*(double)r - 0.291*(double)g + 0.439*(double)b + 128;
          Cr = 0.439*(double)r - 0.368*(double)g - 0.071*(double)b + 128; 

         // if(i==100&&j==i)cout<<iYIQ<<","<<Cb<<","<<Cr<<endl;

          if((iYIQ<=85&&iYIQ>=15)&&(Cb>88&&Cb<133)&&(Cr>122&&Cr<169))count++;
         //if(r>95 && g>40 && b>20 && r>g && r>b && max(r,g,b)-min(r,g,b)>15 && abs(r-g)>15)count++;
          else {out.at<Vec3b>(i,j)[0]=0;out.at<Vec3b>(i,j)[1]=0;out.at<Vec3b>(i,j)[2]=0;}
     }
 }
   return out;

}

int main()
{

cv::Mat binImage = cv::imread("F:3.jpg");
Mat out=skin(binImage);
imshow("xixi",out);
waitKey(0);
Mat out1;
cv::cvtColor(out,out1,CV_BGR2GRAY);
imshow("xixi1",out1);
waitKey(0);
Mat out2;
cv::threshold(out1, out1, 1, 255, CV_THRESH_BINARY_INV);
if(out1.empty()==1)cout<<"no picture!!"<<endl;
imshow("xixi2",out1);
waitKey(0);

cv::Mat labelImg;
Two_Pass(out1, labelImg);
//Seed_Filling(binImage, labelImg);
//彩色显示
cv::Mat colorLabelImg;
LabelColor(labelImg, colorLabelImg);
cv::imshow("colorImg", colorLabelImg);
/* //灰度显示
cv::Mat grayImg;
labelImg *= 10;
labelImg.convertTo(grayImg, CV_8UC1);
cv::imshow("labelImg", grayImg);
*/

cv::waitKey(0);
return 0;
}

解决方案

vector subscript out of range
vector subscript out of range .
vector subscript out of range问题解决方案之一