Video decoding apparatus and method
a video decoding and video technology, applied in the field of video decoding apparatus and method, can solve the problems of insufficient high-speed reproduction, inability to achieve high-speed reproduction by only i-pictures, etc., and achieve the effect of simple configuration
Inactive Publication Date: 2009-10-22
SONY CORP
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This approach enables high-speed reproduction of JVT coded image data with a simple configuration by omitting the deblock filtering process and motion compensation, maintaining picture quality and reducing processing time.
Problems solved by technology
Although the existing techniques perform a reproduction process of only I-pictures 1I, they cannot execute sufficient high-speed reproduction because the deblock filtering process requires a large amount of operations.
In short, in the JVT coding scheme, in a case where pictures to be coded are in the interlace format, the reproduction process of only I-pictures 1I may not create decoded video, so that this scheme has a problem that high-speed reproduction by reproduction of only I-pictures 1I can not be realized.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040]Preferred embodiments of this invention will be described with reference to the accompanying drawings:
(1) Deblock Filtering Process
[0041]First the above-described deblock filtering process employed in the above-described JVT coding scheme will be described.
[0042]The deblock filtering process is a filtering process which applies filtering to each boarder (hereinafter, referred to as block boarder) of neighboring 4×4 blocks in a decoded picture in order to reduce block noise specific to the block segmentation coding format. In the JVT coding scheme, a decoded picture is used as not only an output picture but also a reference picture for successive frames, so that the deblock filtering process of decoded pictures creates smooth reference pictures without block noise, resulting in improving coding efficiency and picture quality.
[0043]With defining strength of filtering to be applied to a block boarder as Boundary Strength (hereinafter, referred to as filtering strength Bs), the de...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| speed | aaaaa | aaaaa |
| time | aaaaa | aaaaa |
| threshold | aaaaa | aaaaa |
Login to View More
Abstract
A video decoding apparatus and method capable of performing high-speed reproduction of image data subjected to coding with a prescribed coding scheme for adaptively performing field-structured or frame-structured coding, with a simple configuration. In a high-speed reproduction mode, a decoding process is applied to only coded image data of intra-frame coded pictures subjected to the frame-structured coding or of one field in the intra-frame coded pictures and coded image data of intra-field coded pictures subjected to the field-structured coding.
Description
[0001]This is a continuation of application Ser. No. 10 / 833,980, filed Apr. 27, 2004, which claims the benefit of priority to Japanese Application No. 2003-123977, filed on Apr. 28, 2003, in the Japanese Patent Office. The entire contents of both applications are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to a video decoding apparatus and method, and more particularly, is suitably applied to a video decoding apparatus, for example, in conformity with the Joint Model of Enhanced-Compression Video Coding (JVT) scheme.[0004]2. Description of the Related Art[0005]Video processing apparatuses in conformity with a video coding scheme such as Moving Picture Experts Group (MPEG) for efficient information transmission and storage have been popular for both information providers such as broadcast stations and information receiver such as general users.[0006]Specifically, the MPEG2 (ISO / IEC 13818-2) format is defined ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(United States)
IPC IPC(8): H04N7/32H04N7/26H04N5/92G11B27/00H04N5/783H04N9/804H04N19/102H04N19/103H04N19/117H04N19/134H04N19/169H04N19/172H04N19/176H04N19/186H04N19/189H04N19/196H04N19/50H04N19/503H04N19/51H04N19/61H04N19/625H04N19/80H04N19/85H04N19/86
CPCG11B27/002H04N5/783H04N9/8042H04N19/172H04N19/527H04N19/117H04N19/132H04N19/162H04N19/44H04N19/112
Inventor SATO, KAZUSHI
Owner SONY CORP