What is the operation and conception of computer image processing (the initial problem of Beiying photography)

The scope of commercial photography is very wide, even in various industries, among which the most obvious are product photography, advertising photography, portrait photography, studio photography and other photography works with commercial value that need to be purchased, including aviation and space. Moreover, many freelance photographers sell photos as commodities, and many photo agencies sell the photos they buy to people in need. (You can go to Baidu for an encyclopedia. )

Nowadays, it is more like advertising photography, product photo photography and so on.