Abstract: The present invention discloses an image capture method comprises capturing a sequence of image frames; providing the sequence of image frames for preview along a first path and buffering the sequence of image frames into a buffer along a second path separately and concurrently; receiving an input command via an input interface unit; and in response to the input command, extracting a portion of the sequence of image frames from the buffer and encoding the portion of image frames along the second path; and storing the portion of encoded image frames in a memory unit.

Abstract: The present invention discloses a mobile device, where the mobile device includes an image sensing unit, a touch screen, and a processor. The image sensing unit is configured to receive at least an image of a scene comprising at least an object. The touch screen is configured to display at least an image of a scene and received at least one user input. The processor is configured to identify the object in response to a first user input corresponding to the object is received, determine characteristics of the object, track the object in the scene according to the characteristics of the object, and capture a number of images of the scene according to a motion state of the object. The motion state is determined according to variance of the characteristics of the object in consecutive images received by the image sensing unit.