void Cloning::getGradientx( const Mat &img, Mat &gx)
{
- int w = img.size().width;
- int h = img.size().height;
- int channel = img.channels();
- for(int i=0;i<h;i++)
- for(int j=0;j<w;j++)
- for(int c=0;c<channel;++c)
- {
- gx.at<float>(i,j*channel+c) =
- (float)img.at<uchar>(i,(j+1)*channel+c) - (float)img.at<uchar>(i,j*channel+c);
- }
-
+ Mat kernel = Mat::zeros(1, 3, CV_8S);
+ kernel.at<char>(0,2) = 1;
+ kernel.at<char>(0,1) = -1;
+ filter2D(img, gx, CV_32F, kernel);
}
void Cloning::getGradienty( const Mat &img, Mat &gy)
{
- int w = img.size().width;
- int h = img.size().height;
- int channel = img.channels();
- for(int i=0;i<h;i++)
- for(int j=0;j<w;j++)
- for(int c=0;c<channel;++c)
- {
- gy.at<float>(i,j*channel+c) =
- (float)img.at<uchar>((i+1),j*channel+c) - (float)img.at<uchar>(i,j*channel+c);
-
- }
+ Mat kernel = Mat::zeros(3, 1, CV_8S);
+ kernel.at<char>(2,0) = 1;
+ kernel.at<char>(1,0) = -1;
+ filter2D(img, gy, CV_32F, kernel);
}
void Cloning::lapx( const Mat &img, Mat &gxx)
{
- int w = img.size().width;
- int h = img.size().height;
- int channel = img.channels();
- for(int i=0;i<h;i++)
- for(int j=0;j<w-1;j++)
- for(int c=0;c<channel;++c)
- {
- gxx.at<float>(i,(j+1)*channel+c) =
- (float)img.at<float>(i,(j+1)*channel+c) - (float)img.at<float>(i,j*channel+c);
- }
+ Mat kernel = Mat::zeros(1, 3, CV_8S);
+ kernel.at<char>(0,0) = -1;
+ kernel.at<char>(0,1) = 1;
+ filter2D(img, gxx, CV_32F, kernel);
}
void Cloning::lapy( const Mat &img, Mat &gyy)
{
- int w = img.size().width;
- int h = img.size().height;
- int channel = img.channels();
- for(int i=0;i<h-1;i++)
- for(int j=0;j<w;j++)
- for(int c=0;c<channel;++c)
- {
- gyy.at<float>(i+1,j*channel+c) =
- (float)img.at<float>((i+1),j*channel+c) - (float)img.at<float>(i,j*channel+c);
-
- }
+ Mat kernel = Mat::zeros(3, 1, CV_8S);
+ kernel.at<char>(0,0) = -1;
+ kernel.at<char>(1,0) = 1;
+ filter2D(img, gyy, CV_32F, kernel);
}
void Cloning::dst(double *mod_diff, double *sineTransform,int h,int w)