Depth estimation method and device based on near-infrared laser speckles

A technology of depth estimation and laser speckle, applied in computing, image data processing, instruments, etc., can solve the problems of depth estimation result error, inaccurate depth estimation, difference in brightness and contrast, etc., to achieve increased accuracy and efficient depth estimation , the results are comprehensive and accurate

Active Publication Date: 2013-08-28
TSINGHUA UNIV
View PDF3 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the depth estimation method based on near-infrared laser speckle usually does not consider the influence of ambient light on the accuracy of depth estimation, resulting in errors in the results of depth estimation; and, since the reference speckle image is pre-stored, its brightness There is a huge difference between the contra

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
  • Depth estimation method and device based on near-infrared laser speckles
  • Depth estimation method and device based on near-infrared laser speckles
  • Depth estimation method and device based on near-infrared laser speckles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The specific implementation manner of the present invention will be further described below in conjunction with the drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0056] Flowchart such as figure 1 A depth estimation method based on near-infrared laser speckle shown in , mainly includes steps:

[0057] S1. Preprocess the target speckle image; this step mainly includes calculating the intensity of the ambient light according to the weight of the ambient light, removing the intensity of the ambient light from the gray value of the target speckle image, and obtaining a pure speckle image. target speckle pattern; in this embodiment, this step is specifically:

[0058] figure 2 Shown in is a partial schematic diagram of the target speckle pattern, image 3 yes figure 2 Partial enlarged view of area A in middle; Figure 4 yes figure 2 Partial enlarged image of re...

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 the technical field of image depth calculation, in particular to a depth estimation method and device based on near-infrared laser speckles. According to the depth estimation method based on the near-infrared laser speckles, through preprocessing conducted on a target speckle image, influences of ambient illumination are eliminated from the target speckle image, and therefore accuracy of depth estimation is improved. Through the fact that speckles are described by the utilization of binary system characteristics, huge difference of brightness and the contrast ratio between the target speckle image and a reference speckle image is effectively offset. Through quick information spread, the depth estimation can be conducted in high efficiency, and meanwhile, due to the fact that parallax error information of an area provided with fewer speckles in the target speckle image is added, the result of the depth estimation can be more comprehensive and more accurate.

Description

technical field [0001] The present invention relates to the technical field of image depth calculation, in particular to a depth estimation method and device based on near-infrared laser speckle. Background technique [0002] Recovering depth information from images is a fundamental problem in the field of computer vision, which has received more and more attention and made great progress in recent years. Depth sensors are increasingly used in various fields such as autonomous driving, shape measurement in industrial production, biomedical imaging, computer scene understanding, and entertainment equipment. Depending on whether controlled lighting is used, depth calculation systems in the prior art can be classified into passive depth estimation systems and active depth estimation systems. [0003] The passive depth estimation system adopts the theory of binocular stereo vision; two parallel cameras are used to shoot scene images at the same time, and the parallax value is o...

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): G06T7/00
Inventor 王贵锦尹玄武
Owner TSINGHUA UNIV
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