Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Video encoding method, device, and program

A coding method and a moving image technology, applied in the field of moving image coding programs, can solve problems such as buffer underflow, and achieve the effects of suppressing buffer underflow, reducing the amount of computation, and improving image quality

Active Publication Date: 2014-09-10
NIPPON TELEGRAPH & TELEPHONE CORP
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, buffer underflow (buffer underflow) is prone to occur in the intra picture at the start of encoding, the scene change, and the subsequent inter picture.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Video encoding method, device, and program
  • Video encoding method, device, and program
  • Video encoding method, device, and program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] image 3 Fig. 1 is an apparatus configuration diagram related to Embodiment 1 of the present invention. In addition, regarding other examples, the basic device structure is the same as that of the first example.

[0071] The normal encoding area setting unit 101 determines which macroblock is to be normally encoded based on the picture number, and outputs this information to the block encoding control unit 102 as normal encoding area information. In the first embodiment, as described above, the normal coding area is enlarged in columns of 2 macroblocks per picture. In addition, only the first picture (the picture number is 0) becomes an intra picture. Therefore, starting from the picture whose picture number is 40, normal encoding is performed in all macroblocks.

[0072] The block encoding control unit 102 inputs a picture, and further inputs normal encoding area information corresponding to the picture. Furthermore, in screen scanning order, if the macroblock of t...

Embodiment 2

[0083] Although the basic flow of the second embodiment is the same as that of the first embodiment, the operation of the normal encoding unit 103 is somewhat different. Specifically, the operation at the time of inter-frame encoding of a block is different.

[0084] In a general H.264 coder, inter-coding may be performed with reference to the simplified coding region because the normal coding region and the simplified coding region in the reference picture are not considered during the dynamic search during intercoding of a block. Generally, in a dynamic search, a prescribed search range centered on a prescribed search center is searched. exist Figure 5 The example is shown in (A). In the H.264 coder, there is a case where the predictive vector is used as the search center. In this case, the search range is included in the simplified coding area of ​​the reference picture, and since this block is coded with reference to the simplified coding area, a Lots of prediction res...

Embodiment 3

[0088] Although the basic flow of the third embodiment is the same as that of the first embodiment, the operation of the normal encoding unit 103 is somewhat different. Specifically, the coding operation of macroblocks co-located with the simplified coding region of the reference picture among the macroblocks of the normal coding region of the coding target picture is different. Such a macroblock, for example, is equivalent to figure 2 Macroblocks C and D in picture 1 of .

[0089] In encoding of a macroblock, mode determination is generally performed. In mode determination, the rate-distortion cost after intra-coding is compared with the rate-distortion cost after inter-coding, and an encoding method that minimizes the rate-distortion cost is selected.

[0090] exist Figure 7 A flowchart of Example 3 is shown in . First, perform intra prediction (S301). In the normal coding unit 103 of the third embodiment, it is determined whether the current macroblock is co-located ...

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

No PUM Login to View More

Abstract

In an intra-picture, a prescribed region is set to a normal encoding region, and a region other than the prescribed region is set to a simplified encoding region. In a successive picture, the normal encoding region is set to a larger region which encompasses the normal encoding region of the preceding picture, and the region other than said region is set to the simplified encoding region. In each picture, normal encoding is carried out in the normal encoding region block, and simplified encoding is carried out in the simplified encoding region block, said simplified encoding being encoding wherein the resulting encoding volume and computation volume are smaller than the normal encoding.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2012-014062 for which it applied in Japan on January 26, 2012, and uses the content here. The present invention relates to a moving picture coding method, a moving picture coding device, and a moving picture coding program for switching between a normal coding method and a simple coding method which generates a small amount of coding and calculation and encodes a moving picture. Background technique [0002] In video encoding in two-way communication, the size of the virtual buffer is made very small in order to achieve low latency. For this reason, buffer underflow (buffer underflow) is likely to occur in the intra picture at the start of encoding, the scene change, and the inter picture thereafter. [0003] In such a situation, by applying, for example, the technique described in Patent Document 1, the possibility of buffer underflow can be reduced at the time of intra picture...

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
no application Login to View More
IPC IPC(8): H04N19/17H04N19/127H04N19/115H04N19/103
CPCH04N19/14H04N19/00369H04N19/146H04N19/172H04N19/0006H04N19/00103H04N19/18H04N19/55H04N19/00018H04N19/00169H04N19/196H04N19/17H04N19/127H04N19/00024H04N19/115H04N19/15H04N19/132H04N19/197H04N19/107H04N19/0026H04N19/103H04N19/105H04N19/00296H04N19/00266H04N19/126H04N19/124H04N19/152H04N19/167H04N19/176
Inventor 北原正树清水淳中村健京地清介小野尚纪
Owner NIPPON TELEGRAPH & TELEPHONE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com