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

Three-dimensional tracking method and system based on fast positioning image scale and area

A technology for locating images and 3D tracking, applied in the field of computer vision, can solve problems such as wasting computing resources, achieve the effects of improving efficiency, achieving scale invariance, and realizing fast 3D tracking

Active Publication Date: 2017-07-28
TSINGHUA UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This undoubtedly wastes a lot of computing resources

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
  • Three-dimensional tracking method and system based on fast positioning image scale and area
  • Three-dimensional tracking method and system based on fast positioning image scale and area
  • Three-dimensional tracking method and system based on fast positioning image scale and area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or e...

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 provides a three-dimensional tracking method and system based on fast positioning of an image scale and area. The method comprises steps as follows: a scale pyramid is built according to a template image; first feature points are extracted from the pyramid; an image of each scale in the pyramid is subjected to area partition, and a key frame data structure is generated according to area information and the first feature points corresponding to areas; second feature points are extracted from a screen image; a pose of a camera is estimated, and key frame area boundaries are projected to the screen image; candidate key frame sequences are selected according to projection results; feature point matching is performed according to the second feature points of the screen images and first feature points of the candidate key frame sequences; the pose of the camera is computed according to a matching result of the feature points. The method has the advantage of a high three-dimensional tracking speed.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a three-dimensional tracking method based on rapidly locating image scales and regions. Background technique [0002] Three-dimensional tracking technology can be applied to popular fields such as virtual reality and augmented reality. Among them, three-dimensional tracking of two-dimensional natural images is a very important direction. With the rapid development of the performance of mobile devices in recent years, mobile augmented reality technology has also achieved rapid development. On the one hand, there is a relatively large gap between mobile devices and PCs in terms of computing power, storage capacity, and battery life. On the other hand, mobile devices have better portability and are equipped with more sensing devices such as GPS, accelerometer, gyroscope, etc. These sensing devices enable mobile devices to obtain more orientation and movement information fr...

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 Patents(China)
IPC IPC(8): G06T7/00G06T17/00
Inventor 孙延奎赵奇可
Owner TSINGHUA 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