Optical field focus stack image sequence encoding and decoding method, device and system

An image sequence and focus stacking technology, applied in the intersection of stereo vision and video coding, can solve the problems of not taking into account the high correlation of images and low coding efficiency, so as to avoid coding block effect, high coding efficiency and natural coding effect. Effect

Active Publication Date: 2020-04-10
HUAZHONG UNIV OF SCI & TECH
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a light field focus stack image sequence encoding and decoding method, device a

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
  • Optical field focus stack image sequence encoding and decoding method, device and system
  • Optical field focus stack image sequence encoding and decoding method, device and system
  • Optical field focus stack image sequence encoding and decoding method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0040] In order to achieve the above object, in the first aspect, the present invention provides a light field focus stack image sequence encoding method, such as figure 1 shown, including the following steps:

[0041]S1. Perform intra-frame encoding on the first frame in the light field focus stack image sequence;

[0042] Specifically, there are usually two methods for obtaining a light fiel...

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

The invention discloses an optical field focus stack image sequence encoding and decoding method, device and system, and aims to simulate out-of-focus blur regions of other frames by performing Gaussian filtering on a focusing region since each frame of a focus stack image has great correlation and only the focusing region is different from the out-of-focus blur region. According to the invention,the prediction motion vector candidate list is traversed; taking the position pointed by the prediction motion vector with the minimum distortion cost as a starting point; carrying out integer pixelsearch and cascaded sub-pixel search in sequence; gaussian filtering is carried out on each matching block in the searching process; the rate distortion cost of the matching blocks before and after Gaussian filtering is compared, the optimal matching block of the matching block with low rate distortion cost is selected, Gaussian filtering is applied to the inter-frame prediction model, residual distribution of the prediction unit and the coding unit is effectively reduced, the code rate is effectively saved, and the coding efficiency is high.

Description

technical field [0001] The present invention belongs to the technical fields of intersecting stereo vision and video encoding, and more particularly relates to a method, device and system for encoding and decoding light field focus stack image sequences. Background technique [0002] The light field focus stack image sequence is a set of two-dimensional images focused at different depths, which contains rich three-dimensional information and is widely used in refocusing, depth of field extension, and three-dimensional display. Due to dense sampling and negligible parallax, there are A large amount of space redundancy requires further compression to eliminate redundancy. The focus stack image sequence of the light field is quite different from the ordinary image sequence. The focus area between frames of the ordinary image sequence is roughly the same, but the focus stack image sequence is different in the focus area and the out-of-focus area of ​​the scene. Most of the exis...

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): H04N19/147H04N19/159H04N19/172H04N19/44H04N19/52H04N19/91
CPCH04N19/147H04N19/159H04N19/172H04N19/44H04N19/52H04N19/91
Inventor 杨铀吴科君刘琼
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap