种子区域与opencv生长 [英] Seeded region growing with opencv

问题描述

我需要选择一个像素值，并应用根据种子像素生长的区域。在尝试写代码后，结果总是一个黑色的图像
无论我使用什么种子点。整个问题涉及 GrowColor 函数。我的猜想是与ifs的逻辑错误。

  #include< cv.h> 
 #include< highgui.h> 
 
 using namespace std; 
 
 int xDim，yDim，zDim; 
 float ThreshHold = 45.0; 
 unsigned long total [3]; 
 int coont，tt; 
 IplImage * Image1; 
 IplImage * Image2; 
 
 CvScalar s = cvScalar（0，0，0，0）; 
 CvScalar s11 = cvScalar（0，0，0，0） 
 
 int Diff，mean [3]，temp [3]; 
 
 void GrowColor（int x，int y）; 
 
 int main（int argc，char * argv []）{
 
 char value [4]; 
 
 int pixType，dimCut; 
 int Dbug = false; 
 int Xseed = 40，Yseed = 234; 
 int i = 0，x，y; 
 Image1 = cvLoadImage（lenah.jpg）; 
 yDim = Image1-> height; 
 xDim = Image1-> width; 
 // int step = Image1-> widthStep; 
 // uchar * data =（uchar *）Image1> imageData; 
 
 //新图片
 Image2 = cvCreateImage（cvSize（Image1-> width，Image1-> height），IPL_DEPTH_8U，
 1）; 
 cvZero（Image2）; 
 total [0] = total [1] = total [2] = coont = 0; 
 
 //处理
 
 for（y = Yseed-5; y <= Yseed + 5; y ++）
 for（x = Xseed  -  5; x < = Xseed + 5; x ++）
 if（（x> 0）&&（y> 0）&&（x< xDim）&& ））{
 
 coont ++; 
 s = cvGet2D（Image1，x，y）; 
 total [0] + = abs（s.val [0]）; 
 total [1] + = abs（s.val [1]）; 
 total [2] + = abs（s.val [2]）; 
 
} 
 
 GrowColor（Xseed，Yseed）; 
 cvNamedWindow（wndname，1）; 
 cvShowImage（original，Image1）; 
 
 cvShowImage（wndname，Image2）; 
 cvWaitKey（0）; 
 return 0; 
 
} 
 
 void GrowColor（int x，int y）{
 //检查点是否已经是区域的一部分
 
 s.val [0] = 0; 
 s.val [1] = 0; 
 s.val [2] = 0; 
 s.val [3] = 0; 
 if（（x <1）&&（y <1））
 s = cvGet2D（Image2，x，y） 
 
 if（s.val [0] == 0）{
 int k; 
 if（（x == 1）&&（y == 1））
 s11 = cvGet2D（Image1，x，y） 
 mean [0] = total [0] / coont; 
 mean [1] = total [1] / coont; 
 mean [2] = total [2] / coont; 
 
 temp [0] = abs（s11.val [0]） -  mean [0]; 
 temp [1] = abs（s11.val [1]） -  mean [1]; 
 temp [2] = abs（s11.val [2]） -  mean [2]; 
 
 Diff = 
（int）（sqrt（
（temp [0] * temp [0] + temp [1] * temp [1] 
 + temp [2] * temp [2]）/ 3））; 
 
 if（Diff< ThreshHold）{
 
 total [0] + = abs（s11.val [0]）; 
 total [1] + = abs（s11.val [1]）; 
 total [2] + = abs（s11.val [2]）; 
 coont ++; 
 s.val [0] = 120; 
 if（（x> 0）&&（y> 0））
 cvSet2D（Image2，x，y，s） 
 if（x> 2）
 GrowColor（x-1，y）; 
 if（y> 2）
 GrowColor（x，y-1）; 
 if（x< xDim  -  2）
 GrowColor（x + 1，y）; 
 if（y< yDim  -  2）
 GrowColor（x，y + 1）; 
 
} 
 
} 
 
} 
  

c> c> c>递归函数可能会导致无限循环。检查该函数中的代码一次。

I need to select a pixel value and apply the region growing in terms of the seed pixel. After trying to write the code, the result was always a black image regardless of what seed point I used. The whole problem is involved in the GrowColor function. My guess is a logical error with the ifs.

#include <cv.h>
#include <highgui.h>

using namespace std;

int xDim, yDim, zDim;
float ThreshHold = 45.0;
unsigned long total[3];
int coont, tt;
IplImage *Image1;
IplImage *Image2;

CvScalar s = cvScalar(0, 0, 0, 0);
CvScalar s11 = cvScalar(0, 0, 0, 0);

int Diff, mean[3], temp[3];

void GrowColor(int x, int y);

int main(int argc, char *argv[]) {

    char value[4];

    int pixType, dimCut;
    int Dbug = false;
    int Xseed = 40, Yseed = 234;
    int i = 0, x, y;
    Image1 = cvLoadImage("lenah.jpg");
    yDim = Image1->height;
    xDim = Image1->width;
    // int step= Image1->widthStep;
    //uchar* data = (uchar *)Image1->imageData;

//New image
    Image2 = cvCreateImage(cvSize(Image1->width, Image1->height), IPL_DEPTH_8U,
            1);
    cvZero(Image2);
    total[0] = total[1] = total[2] = coont = 0;

//Process

    for (y = Yseed - 5; y <= Yseed + 5; y++)
        for (x = Xseed - 5; x <= Xseed + 5; x++)
            if ((x > 0) && (y > 0) && (x < xDim) && (y < yDim)) {

                coont++;
                s = cvGet2D(Image1, x, y);
                total[0] += abs(s.val[0]);
                total[1] += abs(s.val[1]);
                total[2] += abs(s.val[2]);

            }

    GrowColor(Xseed, Yseed);
    cvNamedWindow("wndname", 1);
    cvShowImage("original", Image1);

    cvShowImage("wndname", Image2);
    cvWaitKey(0);
    return 0;

}

void GrowColor(int x, int y) {
//Check to see if point already part of region

    s.val[0] = 0;
    s.val[1] = 0;
    s.val[2] = 0;
    s.val[3] = 0;
    if ((x < 1) && (y < 1))
        s = cvGet2D(Image2, x, y);

    if (s.val[0] == 0) {
        int k;
        if ((x == 1) && (y == 1))
            s11 = cvGet2D(Image1, x, y);
        mean[0] = total[0] / coont;
        mean[1] = total[1] / coont;
        mean[2] = total[2] / coont;

        temp[0] = abs(s11.val[0]) - mean[0];
        temp[1] = abs(s11.val[1]) - mean[1];
        temp[2] = abs(s11.val[2]) - mean[2];

        Diff =
                (int) (sqrt(
                        (temp[0] * temp[0] + temp[1] * temp[1]
                                + temp[2] * temp[2]) / 3));

        if (Diff < ThreshHold) {

            total[0] += abs(s11.val[0]);
            total[1] += abs(s11.val[1]);
            total[2] += abs(s11.val[2]);
            coont++;
            s.val[0] = 120;
            if ((x > 0) && (y > 0))
                cvSet2D(Image2, x, y, s);
            if (x > 2)
                GrowColor(x - 1, y);
            if (y > 2)
                GrowColor(x, y - 1);
            if (x < xDim - 2)
                GrowColor(x + 1, y);
            if (y < yDim - 2)
                GrowColor(x, y + 1);

        }

    }

}

解决方案

Making GrowColor a recursive function may result in an infinite loop. Check the code in that function once.

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