KR100218276B1 - Mpeg data decoding method - Google Patents
Mpeg data decoding method Download PDFInfo
- Publication number
- KR100218276B1 KR100218276B1 KR1019970000326A KR19970000326A KR100218276B1 KR 100218276 B1 KR100218276 B1 KR 100218276B1 KR 1019970000326 A KR1019970000326 A KR 1019970000326A KR 19970000326 A KR19970000326 A KR 19970000326A KR 100218276 B1 KR100218276 B1 KR 100218276B1
- Authority
- KR
- South Korea
- Prior art keywords
- error
- picture
- macro block
- copying
- mpeg data
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/007—Transform coding, e.g. discrete cosine transform
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
- H04N19/895—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder in combination with error concealment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
Abstract
본 발명은 MPEG 데이타 압축에서 에러 은폐 및 움직임 보상과 관련된 디코딩방법에 관한 것으로, 매크로 블럭의 에러를 검출하는 과정; 인트라 픽쳐를 기준으로 매크로 블럭의 에러를 은폐한 예견 픽쳐임을 확인하는 과정; 슬라이스 내의 모든 매크로 블럭들을 복사하는 과정; 및 검출된 매크로 블럭 데이타들을 이전 앵커 프레임의 인트라 픽쳐라고 하고, 다음의 양방향 예견 픽쳐의 매크로 블럭에 대하여 움직임 보상할 때 그대로 복사하는 과정을 포함함을 특징으로 하며, MPEG 데이타 압축 과정에서 픽쳐 유형에 따라 에러 은폐를 수행함으로써, 데이타 디코딩에 필요한 절차를 줄일 수 있다.The present invention relates to a decoding method associated with error concealment and motion compensation in MPEG data compression, comprising: detecting an error of a macro block; Confirming that the predictive picture conceals the error of the macro block based on the intra picture; Copying all macro blocks in the slice; And copying the detected macroblock data as an intra picture of a previous anchor frame and copying the same as the motion compensation is performed for the macroblock of the next bidirectional predictive picture. By performing error concealment accordingly, the procedure required for data decoding can be reduced.
Description
본 발명은 MPEG 데이타의 압축 방법에 관한 것으로, 특히 MPEG 데이타의 에러 은폐 및 움직임 보상과 관련된 디코딩방법에 관한 것이다.The present invention relates to a method of compressing MPEG data, and more particularly, to a decoding method associated with error concealment and motion compensation of MPEG data.
MPEG2의 압축 기술에서는 매크로 블럭(Macro block) 단위로 디코딩이 수행되며, 각 매크로 블럭 단위로 움직임 벡터(motion vecter)를 갖게 된다. 에러의 발생시 매크로 블럭의 움직임 벡터에 대한 검출 에러를 은폐 (Error Concealment)하기 위하여, 마이크로 프로세서는 비디오 홀드 모드 (Video hold mode)를 적용하여 이전 앵커 프레임 (previous anchor frame)의 매크로 블럭을 복사한다. 이 때 인트라 픽쳐 (Intra picture)를 기준으로 예견 픽쳐 (predictive picture)에서 매크로 블럭의 에러를 은폐했다면, 그것을 기준으로 하여 양방향 예견 은폐된 매크로 블럭 (Bidirectional predictive concealed macro block)도 정확한 데이타라고 할 수 없다.In the compression technique of MPEG2, decoding is performed in units of macro blocks, and motion vectors are obtained in units of macro blocks. In order to conceal error detection for the motion vector of the macro block when an error occurs, the microprocessor applies a video hold mode to copy the macro block of the previous anchor frame. In this case, if an error of a macroblock is concealed in a predictive picture based on an intra picture, a bidirectional predictive concealed macro block may not be accurate data based on the prediction. .
본 발명이 이루고자 하는 기술적 과제는 매크로 블럭의 픽쳐 유형에 따라 에러 은폐를 수행하는 MPEG 데이타 디코딩 방법을 제공하는 것이다.An object of the present invention is to provide an MPEG data decoding method for performing error concealment according to a picture type of a macro block.
도 1은 본 발명에 따른 MPEG 데이타 디코딩 방법을 설명하기 위한 플로우차트이다.1 is a flowchart for explaining a method of decoding MPEG data according to the present invention.
상기 과제를 이루기 위하여 본 발명에 의한 MPEG 데이타 디코딩 방법은,MPEG data decoding method according to the present invention to achieve the above object,
매크로 블럭의 에러를 검출하는 과정; 인트라 픽쳐를 기준으로 매크로 블럭의 에러를 은폐한 예견 픽쳐임을 확인하는 과정; 슬라이스 내의 모든 매크로 블럭들을 복사하는 과정; 및 검출된 매크로 블럭 데이타들을 이전 앵커 프레임의 인트라 픽쳐라고 하고, 다음의 양방향 예견 픽쳐의 매크로 블럭에 대하여 움직임 보상할 때 그대로 복사하는 과정을 포함함을 특징으로 한다.Detecting an error of the macro block; Confirming that the predictive picture conceals the error of the macro block based on the intra picture; Copying all macro blocks in the slice; And detecting the detected macroblock data as an intra picture of a previous anchor frame, and copying the macroblock data as it is when motion compensation is performed on the macroblock of the next bidirectional predictive picture.
이하에서 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명에 따른 MPEG 데이타 디코딩 방법을 설명하기 위한 플로우차트이다.1 is a flowchart for explaining a method of decoding MPEG data according to the present invention.
매크로 블럭의 에러를 검출(11)하고 픽쳐 유형을 검사(12)한다. 매크로 블럭의 디코딩 시에 매크로 블럭의 움직임 벡터의 검출 에러를 은폐하기 위하여, 이전의 앵커 프레임의 매크로 블럭 인트라 디코드된 블럭 (macro block intra decoded block)을 복사했다면, 즉 인트라 픽쳐를 기준으로 매크로 블럭의 에러를 은폐한 예견 픽쳐라면, 매크로 블럭의 슬라이스 헤더를 저장(13)하여 다음의 슬라이스 동기 (slice sync)가 검출될 때까지 그 슬라이스 내의 모든 매크로 블럭들을 복사한다. 이렇게 검출된 매크로 블럭 데이타들을 이전 앵커 프레임의 인트라 픽쳐라고 하면 다음의 양방향 예견 픽쳐의 매크로 블럭에 대하여 움직임 보상할 때 그대로 복사한다(14).An error of the macro block is detected 11 and a picture type is checked 12. If the macro block intra decoded block of the previous anchor frame has been copied in order to conceal the error of detecting the motion vector of the macro block at the time of decoding the macro block, that is, If it is a predictive picture that hides the error, the slice header of the macro block is stored (13) to copy all macro blocks in that slice until the next slice sync is detected. If the detected macroblock data is referred to as an intra picture of a previous anchor frame, it is copied as it is when motion compensation is performed on the macroblock of the next bidirectional predictive picture.
이상에서 설명된 바와 같이 본 발명에 따른 MPEG 데이타 디코딩방법에 의하면, MPEG 데이타 압축 과정에서 픽쳐 유형에 따라 에러 은폐를 수행함으로써, 데이타 디코딩에 필요한 절차를 줄일 수 있다.As described above, according to the MPEG data decoding method of the present invention, by performing error concealment according to the picture type in the MPEG data compression process, a procedure required for data decoding can be reduced.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970000326A KR100218276B1 (en) | 1997-01-09 | 1997-01-09 | Mpeg data decoding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970000326A KR100218276B1 (en) | 1997-01-09 | 1997-01-09 | Mpeg data decoding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980065378A KR19980065378A (en) | 1998-10-15 |
| KR100218276B1 true KR100218276B1 (en) | 1999-09-01 |
Family
ID=19494293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019970000326A KR100218276B1 (en) | 1997-01-09 | 1997-01-09 | Mpeg data decoding method |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100218276B1 (en) |
-
1997
- 1997-01-09 KR KR1019970000326A patent/KR100218276B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980065378A (en) | 1998-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6904174B1 (en) | Simplified predictive video encoder | |
| US5724369A (en) | Method and device for concealment and containment of errors in a macroblock-based video codec | |
| US7068722B2 (en) | Content adaptive video processor using motion compensation | |
| KR100964526B1 (en) | Multimedia coding techniques for transitional effects | |
| KR101289603B1 (en) | Method and apparatus for detection and concealment of reference and non-reference video frames | |
| KR100415494B1 (en) | Image encoding method and apparatus, recording apparatus, video signal encoding apparatus, processing apparatus and method, video data processing apparatus and method | |
| KR100439617B1 (en) | Moving picture decoding device and moving picture decoding method | |
| JPH0759115A (en) | Method and apparatus for processing of stereo video signal | |
| JPH08154247A (en) | Compressed image data processor nd method therefor | |
| JPH06311502A (en) | Motion picture transmission equipment | |
| US7016414B2 (en) | Method and system for skipping decoding of overlaid areas of video | |
| KR100218276B1 (en) | Mpeg data decoding method | |
| US5825928A (en) | Decoding apparatus for error concealment considering motion directions of moving images | |
| US20060256872A1 (en) | Filtering characteristic error concealing apparatus | |
| JPS60162392A (en) | Decoder of motion picture signal | |
| KR100587274B1 (en) | method for concealing error in MPEG-2 decompression system | |
| US20060179388A1 (en) | Method and apparatus for re-concealing error included in decoded image | |
| JP3496378B2 (en) | Digital image decoding device and digital image decoding method | |
| JPH06253285A (en) | Refresh method for motion picture signal | |
| JP2008508787A (en) | Error concealment technology for inter-coded sequences | |
| JP2007325206A (en) | Apparatus and method for decoding motion picture | |
| JP2000050259A (en) | Dynamic image coder and dynamic image decoder | |
| KR100215429B1 (en) | An estimation method of concealment moving vector of macro block formating video signal bit stream | |
| KR100564967B1 (en) | Moving picture decoder and method for decoding using the same | |
| JPH1198510A (en) | Image decoding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20070514 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |