Movable photographing system and photography composition control method

A movable photographing system, comprising:

• a carrier;
• an image capturing device, carried by the carrier and configured to generate a first image;
• a storage device, storing a plurality of image data;
• and
• a processing device, obtaining feature information of a target object in the first image, and according to the feature information, comparing the first image with the plurality of image data to select a reference image from the plurality of image data,
• wherein the processing device generates motion information based on the first image and the reference image and the carrier moves according to the motion information to adjust a shot position of the image capturing device to generate a second image,
• wherein the processing device calculates similarities between a plurality of skeletons of the target object with the plurality of image data according to the feature information to compare the first image with the plurality of image data and selects the image data corresponding to the highest degree of similarity to be the reference image.