Hyundai Curitel, Inc.

Hyundai Electronics Industries Co. Ltd.

Hyundai Electronics Ind. Co., Ltd.

Jin-Hak Lee

Joo-Hee Moon

Jae-Kyoon Kim

Sung-Moon Chun

Jae Won Chung

Kwang-Hoon Park

Hae-Kwang Kim

Jae-won Chung

The present invention selectively applies one of VLC tables stored in a memory for encoding a coded block pattern of a macroblock according to the number of blocks having an object within the macroblock, the number of blocks obtained using shape information, thereby reducing the amount of data transmitted and increasing coding efficiency. The present invention also selectively applies one of VLD tables stored in a memory for decoding a coded block pattern of a macroblock according to the number of blocks having an object within the macroblock, the number of blocks obtained using shape information.

Apparatus and method of encoding/decoding a coded block pattern

All macro blocks (MB) decided as an &ldquo;all_0&rdquo;, &ldquo;all_255&rdquo; or &ldquo;intra predicted&rdquo; mode are transmitted as an &ldquo;intra not coded&rdquo; mode. A receiving terminal also separates &ldquo;all_0&rdquo;, &ldquo;all_255&rdquo; and &ldquo;intra predicted&rdquo; from the &ldquo;intra not coded&rdquo; mode, referring to pixels of a lower layer. &ldquo;Inter coded && MVD&equals;0&rdquo; and &ldquo;Inter coded && MVD&excl;&equals;0&rdquo; modes are represented as &ldquo;Inter coded&rdquo;, and &ldquo;Inter not coded && MVD&equals;0&rdquo; and &ldquo;Inter not coded && MVD&excl;&equals;0&rdquo; modes are represented as &ldquo;Inter not coded&rdquo;. As its result, coding modes on an I-picture can be reduced to two modes and coding modes on a P-picture, or a B-picture, can be lessened to four modes.

Apparatus and method for coding/decoding scalable shape binary image, using mode of lower and current layers

Apparatus and method for coding/decoding scalable shape binary image using mode of lower and current layers

An object-by shape information compression apparatus and a method thereof, which includes a motion compensation prediction circuit provided for motion-compensation-predicting a shape information of a current fame using a shape information of a previous frame and a motion information of a current frame; a subtraction circuit provided for computing a prediction error region by subtracting a shape information predicted by the motion compensation prediction circuit and a current motion region; a threshold operation circuit provided for determining a transfer and disconnection of an information in accordance with time by threshold-operating an isolated prediction error region obtained by the subtraction circuit; a contour prediction circuit provided for compression-coding a shape information by predicting a contour in a prediction error region obtained by the threshold operation circuit; a contour reconstruction circuit provided for reconstructing an isolated prediction error region from a contour coded by the contour prediction circuit; and an addition circuit provided for adding an isolated prediction error region obtained by the contour reconstruction circuit and a shape information of a motion-compensated and -predicted current frame.

Object-by shape information compression apparatus and method and coding

Growing community of inventors

Taejon, South Korea

Jin-Hak Lee