Method for measuring and calculating power of alternating current system

The invention discloses an alternating current system power measurement and calculation method, which comprises a shooting terminal, and an aesthetic composition method of the shooting terminal comprises the following steps: step 1, when the shooting terminal enters a shooting mode, obtaining image information in a current viewing frame; 2, determining the composition category of the current shot object according to the image information, and selecting a shooting composition mode according to the composition category; 3, intelligent marking is carried out in the composition mode of the target image, and it is ensured that image scene selection is accurate; and 4, determining individual features and group features of the shot object through an image feature recognition module. According to the method, from the aspects of big data automatic marking and image target detection, analysis and image distinguishing are carried out on a big data sample image library according to image features by utilizing the analysi