I have build two function to drop the specfiy lines from difference Mat object, this is the code:
Mat drop_rows_int(Mat mat, vector<int> v) {
Mat mat_new = Mat::zeros(mat.rows - v.size(), mat.cols, CV_32SC1);
for (int i = 0, j = 0; i < mat.rows; i++) {
if (find(v.begin(), v.end(), i) != v.end())
{
continue;
}
else
{
int*pmat = mat.ptr<int>(i);
int*pmat_new = mat_new.ptr<int>(j);
for (int w = 0; w < mat.cols; w++) {
pmat_new[w] = pmat[w];
}
j++;
}
}
return mat_new;
}
Mat drop_rows_uchar(Mat mat, vector<int> v) {
Mat mat_new = Mat::zeros(mat.rows - v.size(), mat.cols, CV_8UC1);
for (int i = 0, j = 0; i < mat.rows; i++) {
if (find(v.begin(), v.end(), i) != v.end())
{
continue;
}
else
{
uchar*pmat = mat.ptr<uchar>(i);
uchar*pmat_new = mat_new.ptr<uchar>(j);
for (int w = 0; w < mat.cols; w++) {
pmat_new[w] = pmat[w];
}
j++;
}
}
return mat_new;
}
Then I can use it in my main() function like
int main()
{
Mat mat_uchar = (Mat_<uchar>(5, 4) << 5, 6, 0, 4, 0, 1, 9, 9, 100, 3, 5, 8, 200, 33, 1, 4, 8, 88, 23, 6);
Mat new_mat_uchar = drop_rows_uchar(mat_uchar, {2,4});
Mat mat_int = (Mat_<int>(5, 4) << 5, 6, 0, 4, 0, 1, 9, 9, 100, 3, 5, 8, 200, 33, 1, 4, 8, 88, 23, 6);
Mat new_mat_int = drop_rows_int(mat_int, { 2,4 });
return 0;
}
Yes, I made it. but as I know, the Mat can have 7 kinds of depth, such as CV_8U, CV_8S, CV_16U, CV_16S, CV_32S, CV_32F and CV_64F, So I have to build 7 functions with different name to do such thing?? Can anyone tell me how to use one function to implement it??