These are the data types we can use with OpenCV Matrices.

	DATA TYPE	RANGE	IPL IMAGES	CV::MAT
Unsigned 8bits	uchar	0 ~ 255	IPL_DEPTH_8U	CV_8UC1 CV_8UC2 CV_8UC3 CV_8UC4
Signed 8bits	char	-128 ~ 127	IPL_DEPTH_8S	CV_8SC1 CV_8SC2 CV_8SC3 CV_8SC4
Unsigned 16bits	ushort	0 ~ 65535	IPL_DEPTH_16U	CV_16UC1 CV_16UC2 CV_16UC3 CV_16UC4
Signed 16bits	short	-32768 ~ 32767	IPL_DEPTH_16S	CV_16SC1 CV_16SC2 CV_16SC3 CV_16SC4
Signed 32bits	int	-2147483648 ~ 2147483647	IPL_DEPTH_32S	CV_32SC1 CV_32SC2 CV_32SC3 CV_32SC4
Float 32bits	float	-1.18e-38 ~ 3.40e-38	IPL_DEPTH_32F	CV_32FC1 CV_32FC2 CV_32FC3 CV_32FC4
Double 64bits	double	-1.7e+308 ~ +1.7e+308	IPL_DEPTH_64F	CV_64FC1 CV_64FC2 CV_64FC3 CV_64FC4
Unsigned 1bit	bool	0 and 1	IPL_DEPTH_1U

‘C’ represents the number of channels

• C1: 1 channel
• C2: 2 channels
• C3: 3 channels
• C4: 4 channels

We can check the Data Type of a cv::Mat using “type()” method.

This is a method you can use for checking the type of an cv::Mat.

The following method can be used to print any type of single channel cv::Mat

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src: StackOverflaw