1. A method for determining a region of an image, comprising: presenting an image of a scene comprising one or more objects; receiving an input selecting a single point on the image corresponding to a target object; obtaining a motion mask based on the image, wherein the motion mask indicates a local motion section and a global motion section of the image; generating a section map based on the selected point, the section map comprising a target section corresponding to the selected point; and combining the target section and at least a portion of the local motion section to produce a region.