java mat转成二维数组_OpenCV中Mat与数组（一维或者二维）的相互转换

一、Mat转一维数组数组

Mat mat；

//方法1，vector

std::vector array(mat.rows*mat.cols);

if (mat.isContinuous())

array = mat.data;

或者

std::vector array;

if (mat.isContinuous()) {

array.assign(mat.datastart, mat.dataend);

} else {

for (int i = 0; i < mat.rows; ++i) {

array.insert(array.end(), mat.ptr(i), mat.ptr(i)+mat.cols);

}

}

//方法2，数组

unsigned char *array=new unsigned char[mat.rows*mat.cols];

if (mat.isContinuous())

array = mat.data;

二、一维数组转Mat.net

Mat Array2Mat(uchar *array, int row, int col)

{

uchar **array = new uchar[row][col];

for (int i = 0; i

{

for (int j = 0; j < col; ++j)

{

array[i][j] = array[i * col + j] ;

}

}

Mat img(row ,col, CV_8UC1, (unsigned char*)array);

return img;

}

三、Mat转二维数组code

Mat Vec2Mat(uchar **array, int row, int col)

{

Mat img(row ,col, CV_8UC1);

uchar *ptmp = NULL;

for (int i = 0; i

{

ptmp = img.ptr(i);

for (int j = 0; j < col; ++j)

{

ptmp[j] = array[i][j];

}

}

return img;

}

四、二维数组转Matblog

方法一：

unsigned char array[height][width];

cv::Mat mat(height, width, CV_8UC1, (unsigned char*)array );

方法二：

uchar** Mat2Vec(Mat mat)

{

uchar **array = new uchar*[mat.rows];

for (int i = 0; i

array[i] = new uchar[mat.cols];

for (int i = 0; i < mat.rows; ++i)

{

for (int j = 0; j < mat.cols; ++j)

{

array[i][j] = mat.at(i, j);

}

}

return array;

}