Abstract: A method, process, and associated systems for automatically selecting and masking areas of a still image or video clip using imported depth information. An image-editing or video-editing application receives a set of depth values that are each associated with an area of a still image or video frame. Each depth value identifies the distance from the camera position of an object depicted by the area associated with the depth value. When a user directs the application to automatically select or mask a region of the image or frame, the application uses the depth values to automatically choose which pixels to include in the selection or mask such that the selection or mask best approximates an area of the image or frame that represents a three-dimensional object.