1. An image selecting method performed by an image capturing device for selecting at least one image from a sequence of captured images, comprising: storing a plurality of the captured images in a buffer, each of the buffered images having an interested region supposed to encompass an interested target; detecting intactness information describing intactness of the interested target as encompassed in the interested regions of a plurality of the buffered images; and selecting at least one of the buffered images based on the detected intactness information; wherein intactness indicating whether or to what extent the interested target encompassed in the interested region is covered by an interrupting object.