我有两个图像，我在main（）函数中加载，其指针传递给crossCor（）函数。
我面临的问题是代码一旦进入crossCor函数就会翻转，表示遇到了访问冲突。我相信这是我如何使用corrCros函数中的指针操作的问题，即我转移输入图像以计算一些相似性度量。
请好好评论一下代码。从代码中可以看出我是新手。
int main(void)
{
...
IplImage *tempCut=NULL, *resTemplate=NULL, *searchCut=NULL, *resSearch = NULL;
CvBox2D newBoundingBox = frame1_featBB[i2];
/* BoundingBox of search image is larger by the offset
* therefore an update of the values for resampling is needed*/
newBoundingBox.size.height = newBoundingBox.size.height+2*offset;
newBoundingBox.size.width = newBoundingBox.size.width +2*offset;
CvSize tempSize = cvSize(frame1_featBB[i2].size.width, frame1_featBB[i2].size.height);
CvSize newSizeT = cvSize(resamplingFactor*frame1_featBB[i2].size.width, resamplingFactor*frame1_featBB[i2].size.height);
CvSize searchSize = cvSize(newBoundingBox.size.width, newBoundingBox.size.height);
CvSize newSizeS = cvSize(resamplingFactor*newBoundingBox.size.width, resamplingFactor*newBoundingBox.size.height);
/* Memory allocation */
allocateOnDemand( &tempCut, tempSize, IPL_DEPTH_8U, 1 );
allocateOnDemand( &resTemplate, newSizeT, IPL_DEPTH_8U, 1 );
allocateOnDemand( &searchCut, searchSize, IPL_DEPTH_8U, 1 );
allocateOnDemand( &resSearch, newSizeS, IPL_DEPTH_8U, 1 );
/* Cut ROI around the current target */
templateCut( frame1, tempCut, &frame1_featBB[i2] );
templateCut( frame2, searchCut, &newBoundingBox );
/* Resample the images for subpixel accuracy */
resampleIm(resTemplate, tempCut,resamplingFactor);
resampleIm(resSearch, searchCut, resamplingFactor);
/* CORRELATION TASK */
PointCorr corResampled = crossCor(resSearch, resTemplate);
...
cvReleaseImage(&tempCut);
cvReleaseImage(&resTemplate);
cvReleaseImage(&searchCut);
cvReleaseImage(&resSearch);
}
PointCorr crossCor(IplImage* resSearch, IplImage* resTemplate)
{
/* Template mean gray values */
uchar* ptr2grayT = (uchar*)(resTemplate->imageData);
float gT_mean;
gT_mean = windowMeanGray(resTemplate, ptr2grayT);
/* Def of variable search window mean gray values */
float gS_mean=0;
/* Def of sigmas */
float cor_coeff=0, sigmaTS=0, sigmaT=0, sigmaS=0;
/************ MAIN LOOP ******************************** */
/************ CORRELATION TASK ***************************/
/* Initialization of correlation peaks register */
PointCorr corrPeak;
corrPeak.x = 0;
corrPeak.y = 0;
corrPeak.corrCoeff = -1;
/* Times to loop through */
int loopHeight = resSearch->height - resTemplate->height;
int loopWidth = resSearch->width - resTemplate->width;
/* Pointers ini */
uchar* ptr2grayS = NULL;
uchar* ptrSearch = NULL;
uchar* ptrTemplate = NULL;
/* These loops work as following:
* resTemplate image is slided over each pixel of resSearch and for each position a correlation coefficient is computed;
* the first two loops (i & i2) shift over the search image
* the next two loops (i5 & i6) shift over the template i.e. for each i & i2, i5 & i6 make full loops over resTemplate */
for(int i=0; i<loopHeight; i++)
{
cout << "row: " << i << endl;
for(int i2=0; i2<loopWidth; i2++)
{
//cout << "next col: " << i2 <<endl;
sigmaTS=0; sigmaT=0; sigmaS=0;
ptr2grayS = (uchar*)(resSearch->imageData);
gS_mean = windowMeanGray(resSearch, ptr2grayS); //mean gray value of resSearch image pixels that coincide with the template (resTemplate); the mean changes as we shift the template to other locations of resSearch
/* This is a loop computation of corr coeff
* for each pix within the search window */
for(int i5=0; i5<resTemplate->width; i5++)
{
ptrSearch = (uchar*)(resSearch->imageData + (i+i5)*resSearch->widthStep)[i2]; //i2 - cols
ptrTemplate = (uchar*)(resTemplate->imageData + i5*resTemplate->widthStep);
for(int i6=0; i6<resTemplate->height; i6++)
{
sigmaTS = sigmaTS + (float)(*ptrTemplate - gT_mean)*(float)(*ptrSearch - gS_mean);
sigmaT = sigmaT + (float)(*ptrTemplate - gT_mean)*(float)(*ptrTemplate - gT_mean);
sigmaS = sigmaS + (float)(*ptrSearch - gS_mean)*(float)(*ptrSearch - gS_mean);
ptrTemplate++;
ptrSearch++;
}
}
/* Finally the correlation coefficient for a given pixel in resSearch*/
cor_coeff = sigmaTS/sqrt(sigmaT*sigmaS);
//cout << "Corr coeff " << cor_coeff << endl;
/* Save the current highest correlation coefficient */
if(cor_coeff>corrPeak.corrCoeff)
{
corrPeak.corrCoeff = cor_coeff;
corrPeak.x = i2;
corrPeak.y = i;
cout << "MAX! " << endl;
}
}
}
return(corrPeak);
}
我遇到了被阻止的JavaScript问题因此我在这里做出回应。不方便。
我注释掉了指针移位和调试的部分代码。那是代码：
uchar* ptrSearch = NULL;
uchar* ptrTemplate = NULL;
for(int i=0; i<loopHeight; i++)
{
for(int i2=0; i2<loopWidth; i2++)
{
/* This is a loop computation of corr coeff
* for each pix within the search window */
for(int i5=0; i5<resTemplate->width; i5++)
{
ptrSearch = (uchar*)(resSearch->imageData + (i+i5)*resSearch->widthStep +i2 ); //i2 - cols
ptrTemplate = (uchar*)(resTemplate->imageData + i5*resTemplate->widthStep);
for(int i6=0; i6<resTemplate->height; i6++)
{
ptrTemplate++;
ptrSearch++;
}
}
}
}
现在只测试了ptrTemplate和ptrSearch。它抗议的循环内部似乎是计算机情绪的问题。它会循环4次，有时甚至不会循环。如果我让它继续而不是打破它将继续进行另外几个循环/线并再次翻转。
:(
我应该补充一点，它会在指针操作出现的4行中的任何一行停止。
感谢您为解决我的问题做出贡献。