cv::Mat image; int elementSize = image.elemSize(); // returns the size of each element in the Mat object
cv::Mat A(3, 3, CV_8UC3); int elementSize = A.elemSize(); // returns the size of each element in the Mat objectHere, we create a Mat object `A` with 3 rows, 3 columns, and 3 channels of unsigned 8-bit integers (i.e., CV_8UC3). Then, we call the `elemSize` function to determine the size of each element in the Mat object. Determining Package Library: The package library being used in this example is OpenCV, a popular computer vision library that provides functions and tools for image and video processing, object detection, feature extraction, and more.