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Not sure if there's a single function to do it but you have access to the following variables in cv::Mat

data (raw data) rows cols elem_size (size in byte of each element)

So rowscolselem_size should give you to the total bytes to send.

Not sure if there's a single function to do it but you have access to the following variables in cv::Mat

Not sure if there's a single function to do it but you have access to the following variables in cv::Mat

• data (raw data)
• rows, cols
• elem_size (size in byte of each element)

So rowscolsrows * cols * elem_size should give you to the total bytes to send.