KR970057937A

KR970057937A - Object Oriented MPEG2 Video Encoder and Decoder

Info

Publication number: KR970057937A
Application number: KR1019950062070A
Authority: KR
Inventors: 김형석
Original assignee: 구자홍; Lg 전자 주식회사
Priority date: 1995-12-28
Filing date: 1995-12-28
Publication date: 1997-07-31

Abstract

본 발명은 객체영상과 배경영상을 분리하여 각기 다르게 부호화하므로써 인터액티브(interactive)한 객체조작 및 특정 객체의 고효율 부호화를 가능하게 하는 객체지향 MPEG2 비디오 부호화기 및 복호기에 관한 것으로, 객체지향 MPEG2 비디오 부호화기는 다수개의 MPEG2 객체비디오 부호기(105,106,107) 및 MPEG2 배경 비디오 부호기(108)와, 객체 위치정보(110)를 상기 MPEG2 객체 비디오 부호기(105,106,107)로 입력하는 객체 위치 정보 발생기(109), 상기 다수개의 MPEG2 객체 비디오 부호기(105,106,107)로 출력된 객체 비트스트림 출력(112,113,114)과, 상기 MPEG2 배경 비디오 부호기(104)로부터 출력된 배경 비트스트림 출력이 입력되고, 상기 객체위치정보발생기(109)로부터 입력되는 각 객체의 위치정보(110)가 입력되어, 하나의 MPEG2 비디오 비트스트림으로 합성시켜 비트스트림(115)을 출력시키는 비트스트림 편지기(111)로 구성되고, 객체입력버퍼(403,404,405), 배경 비트스트림을 저장하는 배경 입력버퍼(406),멀티플렉서(407), 픽처(picture)/사용자(user)/데이타(data)영역에 기록된 객체 위치정보로부터 멀티플렉서 제어신호를 생성하는 객체조작 제어기(409) 및 MPEG2 복호기(401)로 구성된다.The present invention relates to an object-oriented MPEG2 video encoder and decoder that enables interactive object manipulation and high-efficiency encoding of a specific object by separating object images and background images and encoding them differently. A plurality of MPEG2 object video encoders 105, 106 and 107 and an MPEG2 background video encoder 108, an object position information generator 109 for inputting object position information 110 to the MPEG2 object video encoders 105, 106 and 107, and the plurality of MPEG2 objects The object bitstream outputs 112, 113, and 114 output to the video encoders 105, 106, and 107, and the background bitstream output output from the MPEG2 background video encoder 104 are input, and the object bitstream outputs of the respective object inputs are input from the object position information generator 109. The position information 110 is input and synthesized into one MPEG2 video bitstream to form the bitstream 115. An object input buffer (403, 404, 405), a background input buffer (406) for storing a background bitstream, a multiplexer (407), a picture / user / data ( and an object manipulation controller 409 and an MPEG2 decoder 401 for generating a multiplexer control signal from the object position information recorded in the data) area.

Description

Object Oriented MPEG2 Video Encoder and Decoder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 객체지향 MPEG2 비디오 부호화기를 나타낸 도면,1 is a diagram illustrating an object-oriented MPEG2 video encoder according to the present invention;

제2도는 제1도의 다수의 객체영상과 배경영상 및 이의 합셩영상을 나타낸 도면,FIG. 2 is a diagram illustrating a plurality of object images, a background image, and a sum image thereof of FIG. 1;

제3도는 객체영상과 배경영상의 부호화 과정을 나타낸 도면,3 is a diagram illustrating a process of encoding an object image and a background image;

제4도는 객체지향 MPEG2 비디오 복호기를 나타낸 도면,4 is a diagram illustrating an object-oriented MPEG2 video decoder;

제5도는 객체지향 MPEG2 비디오 복호기의 동작 설명을 나타낸 흐름도.5 is a flowchart showing the operation of the object-oriented MPEG2 video decoder.

Claims

Object location information such as a plurality of MPEG2 object video encoders 105, 106 and 107 and an MPEG2 background video encoder 108 for encoding a plurality of input object images 101, 102 and 103 and a background image 104, and an area occupied by the object and the size of the object. The object position information generator 109 for inputting 110 to the MPEG2 object video encoders 105, 106 and 107, the object bitstream outputs 112, 113 and 114 output from the plurality of MPEG2 object video encoders 105, 106 and 107 and the MPEG2 background video encoder The background bitstream output outputted from 104 is inputted, and the positional information 110 of each object inputted from the object position information generator 109 is inputted, synthesized into one MPEG2 video bitstream, and then the bitstream 115 is inputted. Object-oriented MPEG2 video encoder, comprising: a bitstream editor (111) for outputting < RTI ID = 0.0 >

The bitstream editor editor 111 encodes all macroblocks and slices including the object image 301 even in one pixel, and the background image 302 intra-codes all the portions thereof to encode the same. After the end, the macroblock of the background image is replaced with the macroblock of the encoded object image 301 so that the composite image 303 of the object image 301 and the background image 302 is made at the bitstream level. An object-oriented MPEG2 video encoder.

Decode the input bitstream 401 generated from the object-oriented MPEG2 video encoder, and decode the object position information 408 from the information about each object recorded in the picture / user / data area. A header decoder and divider 402 for extracting and distributing each object bitstream from the input bitstream 401 using the information, and distributing and storing the object bitstream into an object input buffer, and an object input for storing a bitstream corresponding to each object. An object operation for generating control signals from the user input 411 and the object position information 408 decoded by the head decoder and divider 402, the background input buffer 406 storing the buffers 403, 404, 405 and the background bitstream. The controller 409 receives a control signal generated by the object manipulation controller 409 and selects and outputs one of a plurality of object input buffers 403, 404, 405 and a background input buffer 406. An object-oriented object comprising a lexer 407 and an MPEG2 decoder 410 which reconstructs and outputs an original image by using the input bitstream and the object position information 408 from the multiplexer 407. MPEG2 video decoder.

※ Note: The disclosure is based on the initial application.