Moving picture prediction system

• US 20080144719A1
• Filed: 10/31/2007
• Published: 06/19/2008
• Est. Priority Date: 02/13/1997
• Status: Abandoned Application

• Current Assignee: Hirofumi Nishikawa, Kohtaro Asai, Shinichi Kuroda, Shunichi Sekiguchi, Tokumichi Murakami, Yoshimi Isu, Yuri Hasegawa
• Original Assignee: Hirofumi Nishikawa, Kohtaro Asai, Shinichi Kuroda, Shunichi Sekiguchi, Tokumichi Murakami, Yoshimi Isu, Yuri Hasegawa
• Inventors: Nishikawa, Hirofumi, Asai, Kohtaro, Hasegawa, Yuri, Sekiguchi, Shunichi, Isu, Yoshimi, Murakami, Tokumichi, Kuroda, Shinichi
• Application Number:
  US11/980,497
• Publication Number:
  US 20080144719A1
• Time in Patent Office: Days
• US Class Current: 375/240.16
• CPC Class Codes: H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• CPC Class Codes: H04N 19/127 Prioritisation of hardware or computational resources
• CPC Class Codes: H04N 19/137 Motion inside a coding unit, e.g. average field, frame or block difference
• CPC Class Codes: H04N 19/142 Detection of scene cut or scene change
• CPC Class Codes: H04N 19/179 the unit being a scene or a shot
• CPC Class Codes: H04N 19/186 the unit being a colour or a chrominance component
• CPC Class Codes: H04N 19/196 being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters processing of motion vectors H04N19/513
• CPC Class Codes: H04N 19/23 with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic
• CPC Class Codes: H04N 19/423 characterised by memory arrangements H04N19/433 takes precedence
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/463 by compressing encoding parameters before transmission
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/537 Motion estimation other than block-based
• CPC Class Codes: H04N 19/573 Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
• CPC Class Codes: H04N 19/58 Motion compensation with long-term prediction, i.e. the reference frame for a current frame not being the temporally closest one H04N19/23 takes precedence
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/87 involving scene cut or scene change detection in combination with video compression
• CPC Class Codes: H04N 7/24 Systems for the transmission of television signals using pulse code modulation H04N21/00 takes precedence

Abstract

To achieve an encoding system including a highly efficient prediction performed in response to the content of a scene, a significance, and a motion characteristic of a moving picture and the like, memories a, b, c, motion compensator 5 responsive to an arbitrary transform parameter representing the motion of a prediction picture segment for generating a predicted picture by using arbitrary data stored in the memories a, b, c based upon the transform parameter, and memory update unit 15 for allowing the content of one or more of the memories to be updated at an arbitrary period of time, are provided.

Claims

1. A moving picture prediction system for predicting a moving picture to be implemented in at least one of an encoder and a decoder, the moving picture prediction system comprising:

a plurality of reference picture memory areas, each area for storing picture data of a reference picture to be used for prediction; and

a prediction picture generation section including a motion compensator for receiving a parameter representing a motion of between an image to be predicted and a reference picture stored in a reference memory area, a parameter representing a reference memory area to be used for prediction, and for generating a predicted image by using the reference picture data stored in the plurality of the reference picture memory areas and indicated by said parameter representing a reference memory area to be used for prediction, and a parameter determining bit assignment for coded representation of the parameter representing a reference memory area of a plurality of reference picture memory areas to be used for prediction.

2. The moving picture prediction system according to claim 1, wherein each reference picture is allocated unique reference number based on frequency in use for prediction.

3. The moving picture prediction system according to claim 1, wherein each reference number is dynamically updated.

4. A moving picture prediction system for predicting a moving picture to be implemented in at least one of an encoder and a decoder, the moving picture prediction system comprising:

a plurality of reference picture memory areas, each area for storing picture data of a reference picture to be used for prediction; and

a prediction picture generation section including a motion compensator for receiving a parameter representing a motion between an image to be predicted and a reference picture stored in a reference memory area, a parameter representing a reference memory area to be used for prediction and reference number identifying the reference picture to be used for prediction, and for generating a predicted image by using the reference picture data stored in the plurality of the reference picture memory areas and indicated by said parameter representing a reference memory area to be used for prediction, wherein each reference picture is identified by each reference number, which is dynamically updated.

5. The moving picture prediction system according to claim 4, wherein the reference number is dynamically updated based on frequency in use for prediction.

6. A moving picture prediction method of predicting a moving picture to be implemented in at least one of an encoder and a decoder, the moving picture prediction method comprising the steps of:

receiving a parameter representing a motion between an image to be predicted and a reference picture stored in a reference memory area, a parameter representing a reference memory area of a plurality of reference picture memory areas to be used for prediction, each area for storing picture data of a reference picture to be used for prediction, and a parameter determining bit assignment for coded representation of the parameter representing a reference memory area of a plurality of reference picture memory areas to be used for prediction, and generating a predicted image by using the reference picture data stored in the plurality of the reference picture memory areas and indicated by said parameter representing a reference memory area to be used for prediction.

7. The moving picture prediction method according to claim 6, wherein each reference picture is allocated unique reference number based on frequency in use for prediction.

8. The moving picture prediction system according to claim 6, wherein each reference number is dynamically updated.

9. A moving picture prediction method of predicting a moving picture to be implemented in at least one of an encoder and a decoder, the moving picture prediction method comprising the steps of:

receiving a parameter representing a motion between an image to be predicted and a reference picture stored in a reference memory area, a parameter representing a reference memory area of a plurality of reference picture memory areas to be used for prediction, and reference number identifying the reference picture to be used for prediction, each reference memory area for storing picture data of a reference picture to be used for prediction and generating a predicted image by using the reference picture data stored in the plurality of the reference picture memory areas and indicated by said parameter representing a reference memory area to be used for prediction, wherein each reference picture is identified by each reference number, which is dynamically updated.

10. The moving picture prediction method according to claim 9, wherein the reference number is dynamically updated based on frequency in use for prediction.