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i am creating 4-dimensional blob from image cv::dnn::blobFromImage() function but it is giving rows = -1, cols = -1 and data = " ". i am using simple code as shown below.

Mat inImage = imread("A_1.ppm, 1);
Mat rgbImage;
cvtColor(inImage, rgbImage, COLOR_BGRA2RGB );
Mat 4DImage(rgbImage, 1.0, Size(rgbImage.rows, rgbImage.cols), Scalar(0, 0, 0), false, false);

return 0;

i am creating 4-dimensional blob from image cv::dnn::blobFromImage() function but it is giving rows = -1, cols = -1 and data = " ". i am using simple code as shown below.

Mat inImage = imread("A_1.ppm, 1);
Mat rgbImage;
cvtColor(inImage, rgbImage, COLOR_BGRA2RGB );
Mat 4DImage(rgbImage, 1.0, Size(rgbImage.rows, rgbImage.cols), Scalar(0, 0, 0), false, false);

return 0;

Hi @dkurt i am creating 4-dimensional blob from image cv::dnn::blobFromImage() function but it is giving rows = -1, cols = -1 and data = " ". i am using simple code as shown below.

Mat inImage = imread("A_1.ppm, 1);
Mat rgbImage;
cvtColor(inImage, rgbImage, COLOR_BGRA2RGB );
Mat 4DImage(rgbImage, 1.0, Size(rgbImage.rows, rgbImage.cols), Scalar(0, 0, 0), false, false);

return 0;

Hi @dkurt i am creating 4-dimensional blob from image cv::dnn::blobFromImage() function but it is giving rows = -1, cols = -1 and data = " ". i am using simple code as shown below.

Mat inImage = imread("A_1.ppm, 1);
Mat rgbImage;
cvtColor(inImage, rgbImage, COLOR_BGRA2RGB );
Mat 4DImage(rgbImage, 4DImage = dnn::blobFromImage (rgbImage, 1.0, Size(rgbImage.rows, rgbImage.cols), Scalar(0, 0, 0), false, false);

return 0;

Hi @dkurt i am creating 4-dimensional blob from image cv::dnn::blobFromImage() function but it is giving rows = -1, cols = -1 and data = " ". i am using simple code as shown below.

Mat inImage = imread("A_1.ppm, imread("A_1.ppm", 1);
Mat rgbImage;
cvtColor(inImage, rgbImage, COLOR_BGRA2RGB );
Mat 4DImage = dnn::blobFromImage (rgbImage, 1.0, Size(rgbImage.rows, rgbImage.cols), Scalar(0, 0, 0), false, false);

return 0;