Patent Number: 7,711,196

Title: Apparatus and method for generating coded block pattern for alpha channel image and alpha channel image encoding/decoding apparatus and method using the same

Abstract: An apparatus and a method generate a coded block pattern (CBP) of an alpha channel image. An apparatus and a method encode or decode the alpha channel image using the method. The alpha channel image encoding apparatus includes a CBP generator generating a CBP of a first block corresponding to an encoding unit in the alpha channel image by allocating CBPs to a plurality of second blocks that includes the first block; and a bitstream generator generating a bitstream by encoding the CBP or the CBP and pixel values of the second blocks based on the CBP of each of second blocks.

Inventors: Kim; Wooshik (Gyeonggi-do, KR), Kim; Hyun Mun (Gyeonggi-do, KR), Cho; Daesung (Seoul, KR), Park; Jinhyung (Gyeonggi-do, KR)

Assignee: Samsung Electronics Co., Ltd.

International Classification: G06K 9/36 (20060101)

Expiration Date: 5/04/12018