Abstract: An automatic imaging method is provided that selects and images one target in a monitoring environment where multiple target candidates exist on input video images. The method acquires tracking video images of a target by steps of: estimating, for each block obtained by dividing an imaging region of input video image I, whether a part or all of an object to be tracked and imaged appears in the block, and extracting set of blocks P in which the object is estimated to appear; presetting N number of regions Si (i=1, 2, 3 . . . N) of arbitrary shape on an imaging region of input video image I, together with priorities pi (i=1, 2, 3 . . .