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

Motion estimation method for extending line search into panoramic video

A panoramic video and motion estimation technology, applied in the field of panoramic video, to achieve the effect of improving accuracy

Active Publication Date: 2010-03-10
BEIHANG UNIV
View PDF2 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only applicable to cylindrical panoramas, so it cannot effectively perform motion estimation on cubic panorama videos

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
  • Motion estimation method for extending line search into panoramic video
  • Motion estimation method for extending line search into panoramic video
  • Motion estimation method for extending line search into panoramic video

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention divides the continuously collected panoramic video into reference frames and prediction frames, and the reference images and prediction images can be divided according to a fixed ratio (such as 1:5, 1:10, 1:15, etc.). The predicted frame is divided into several macroblocks. According to the motion trend and corresponding relationship of image blocks between adjacent frames, the matching block that is most similar to the current block of the predicted frame is searched in the reference frame, that is, the most matching block. The best matching block and the predicted frame The relative position of the current block calculates the motion vector.

[0025] Before introducing the specific implementation steps of the present invention, the motion trend and corresponding relationship of the image blocks in the cube panoramic video will be described. For panoramic videos of captured still scenes, the global motion of the camera is usually dominated by hori...

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 relates to a motion estimation method for extending line search into a panoramic video. The method comprises the following steps: (1) extending images on all the surfaces of a referenceframe by using upper, lower, left and right adjacency images on each surface of the reference frame; (2) selecting a first macroblock without search in macroblocks of a predictive frame, searching theerror point of the smallest block in the extended reference frame by a line search method through the macroblock, and returning a motion vector corresponding to the error point of the smallest block;(3) taking the matched block subjected to line search in the step (2) as the starting point, and performing extended search on the adjacent macroblocks to obtain a corresponding motion vector; and (4) detecting whether the search matching is performed on the macroblocks in the predictive frame or not, and entering in the step (2) if a macroblock is not searched, otherwise, ending. The method caneffectively perform motion estimation on the panoramic video and improve the accuracy of motion estimation and the quality of a compensation image.

Description

technical field [0001] The present invention relates to the technical field of panoramic video, and more specifically, relates to a method for performing motion estimation on panoramic video. Background technique [0002] Panoramic images are stitched together from multiple real-world images taken at a certain point. Its specific generation process is: mapping overlapping images onto simple geometric surfaces, such as spheres, cubes or cylinders, and then stitching the projected images seamlessly to obtain panoramic images. According to the mapped geometry, panoramic images can be divided into cylindrical panoramic images, spherical panoramic images and cubic panoramic images. Panoramic video is composed of some time-related panoramic image sequences, from which a real panoramic scene can be obtained, and video frames can be positioned through time. [0003] Panoramic video covers a 360-degree scene range, and its data volume is huge, which causes great difficulties in dat...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20G06T7/223H04N19/527
Inventor 周忠吴威陈珂牛犇
Owner BEIHANG UNIV
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