Letterbox margin processing method for identifying letterbox margins of target frame according to frame packing type corresponding to 3d video input and related letterbox margin processing apparatus thereof

A letterbox margin processing method, comprising:

• receiving a three-dimensional (3D) video input;
• detecting a first letterbox margin and a second letterbox margin within a target frame derived from the 3D video input;
• determining a frame packing type corresponding to the 3D video input;
• determining a third letterbox margin of a first image region within the target frame according to the determined frame packing type and the detected second letterbox margin, wherein the determined third letterbox margin and the detected first letterbox margin are letterbox margins of the first image region;
• and
• determining a fourth letterbox margin of a second image region within the target frame according to the determined frame packing type and the detected first letterbox margin, wherein the determined fourth letterbox margin and the detected second letterbox margin are letterbox margins of the second image region.

A letterbox margin processing method, comprising:

• receiving a three-dimensional (3D) video input;
• detecting a first letterbox margin and a second letterbox margin within a target frame derived from the 3D video input;
• determining a frame packing type corresponding to the 3D video input;
• removing letterbox margins of a first image region within the target frame according to the determined frame packing type, the detected first letterbox margin, and the detected second letterbox margin, wherein the letterbox margins of the first image region include the detected first letterbox margin;
• and
• removing letterbox margins of a second image region within the target frame according to the determined frame packing type, the detected first letterbox margin, and the detected second letterbox margin, wherein the letterbox margins of the second image region include the detected second letterbox margin.

A letterbox margin processing apparatus, comprising:

• a processing circuit, arranged to receive a three-dimensional (3D) video input and determine a frame packing type corresponding to the 3D video input;
• a first letterbox margin detecting circuit, coupled to the processing circuit, for detecting a first letterbox margin and a second letterbox margin within a target frame derived from the 3D video input;
• and
• a second letterbox margin detecting circuit, coupled to the processing circuit and the first letterbox margin detecting circuit, for determining a third letterbox margin of a first image region within the target frame according to the determined frame packing type and the detected second letterbox margin, and determining a fourth letterbox margin of a second image region within the target frame according to the determined frame packing type and the detected first letterbox margin, wherein the determined third letterbox margin and the detected first letterbox margin are letterbox margins of the first image region, and the determined fourth letterbox margin and the detected second letterbox margin are letterbox margins of the second image region.

A letterbox margin processing apparatus, comprising:

• a processing circuit, arranged to receive a three-dimensional (3D) video input and determine a frame packing type corresponding to the 3D video input;
• a letterbox margin detecting circuit, coupled to the processing circuit, for detecting a first letterbox margin and a second letterbox margin within a target frame derived from the 3D video input;
• and
• a letterbox margin removing circuit, coupled to the processing circuit and the letterbox margin detecting circuit, for removing letterbox margins of a first image region within the target frame according to the determined frame packing type, the detected first letterbox margin, and the detected second letterbox margin, and removing letterbox margins of a second image region within the target frame according to the determined frame packing type, the detected first letterbox margin, and the detected second letterbox margin, wherein the letterbox margins of the first image region include the detected first letterbox margin, and the letterbox margins of the second image region include the detected second letterbox margin.