公开(公告)号：EP1800487A1

公开(公告)日：2007-06-27

申请号：EP05809032.5

申请日：2005-10-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Net N TV, Inc.

Inventor： JOUNG, Ye Sun ,  CHA, Ji Hun ,  CHEONG, Won Sik ,  KIM, Kyu Heon ,  LIM, Young Kwon

IPC: H04N7/24

CPC classification number: H03M7/40 ,  H04N19/12 ,  H04N19/13 ,  H04N19/146 ,  H04N19/46

Abstract: Provided are a method and an apparatus for selectively encoding/decoding point sequences to maximize bit efficiency of a lightweight application scene representation (LASeR) binary stream. The point sequence encoding method includes the steps of: for each point sequence, (a) selecting one of exponential-Golomb (EG) encoding and fixed length (FL) encoding schemes; (b) when the FL encoding scheme is selected, encoding the point sequence using the FL encoding scheme to generate a binary stream; and (c) when the EG encoding scheme is selected, encoding the point sequence using the EG encoding scheme to generate a binary stream. The binary stream includes a flag indicating which encoding scheme is selected and a parameter k, with which the EG encoding can be most effectively performed, when the EG encoding scheme is selected. According to the encoding method, LASeR point sequences can be efficiently encoded and, during a decoding process, a large overhead is not incurred to a decoder (terminal).

公开(公告)号：EP1800487B1

公开(公告)日：2012-07-11

申请号：EP05809032.5

申请日：2005-10-13

Applicant: Electronics and Telecommunications Research Institute ,  Net N TV, Inc.

Inventor： JOUNG, Ye Sun ,  CHA, Ji Hun ,  CHEONG, Won Sik ,  KIM, Kyu Heon ,  LIM, Young Kwon

IPC: H04N7/24

CPC classification number: H03M7/40 ,  H04N19/12 ,  H04N19/13 ,  H04N19/146 ,  H04N19/46

Abstract: Provided are a method and an apparatus for selectively encoding/decoding point sequences to maximize bit efficiency of a lightweight application scene representation (LASeR) binary stream. The point sequence encoding method includes the steps of: for each point sequence, (a) selecting one of exponential-Golomb (EG) encoding and fixed length (FL) encoding schemes; (b) when the FL encoding scheme is selected, encoding the point sequence using the FL encoding scheme to generate a binary stream; and (c) when the EG encoding scheme is selected, encoding the point sequence using the EG encoding scheme to generate a binary stream. The binary stream includes a flag indicating which encoding scheme is selected and a parameter k, with which the EG encoding can be most effectively performed, when the EG encoding scheme is selected. According to the encoding method, LASeR point sequences can be efficiently encoded and, during a decoding process, a large overhead is not incurred to a decoder (terminal).

公开(公告)号：EP1800487A4

公开(公告)日：2010-09-08

申请号：EP05809032

申请日：2005-10-13

Applicant: KOREA ELECTRONICS TELECOMM ,  NET N TV INC

Inventor： JOUNG YE SUN ,  CHA JI HUN ,  CHEONG WON SIK ,  KIM KYU HEON ,  LIM YOUNG KWON

IPC: H04N7/24

CPC classification number: H03M7/40 ,  H04N19/12 ,  H04N19/13 ,  H04N19/146 ,  H04N19/46