Method for reproducing texture force touch based on shape-from-shading technology

An image grayscale and shape recovery technology, applied in image data processing, 3D image processing, graphic reading, etc., can solve problems such as poor trend and depth expression, unrealistic three-dimensional surface contours, etc.

Inactive Publication Date: 2009-12-30
JIANGSU HONGBO MACHINERY MFG +1
View PDF0 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its shortcoming is that this method can only reproduce the roughness of the texture, but it is not effective in expressing the trend and depth of the real protrusions and depressions on the surface.
In this method, although the operator can effectively pe

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
  • Method for reproducing texture force touch based on shape-from-shading technology
  • Method for reproducing texture force touch based on shape-from-shading technology
  • Method for reproducing texture force touch based on shape-from-shading technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] see figure 1 , in order to reproduce the tactile feeling of the image texture more realistically, the real texture image is firstly processed with normalized grayscale, and the three-dimensional information of the texture is extracted from the grayscale information of the image to reconstruct the virtual surface; the operator controls the virtual surface through the hand controller. The probe "gropes" on the virtual surface; then the force-tactile model is used to calculate the microscopic normal force and friction force of the contact point between the virtual probe and the virtual surface, and the resultant force of texture perception is fed back to the operator in real time by the hand controller.

[0063] see figure 2 , use the right-hand rule to construct a triangle with three points (i, j), (i+1, j+1), (i+1, j); then according to the right-hand rule, use (i, j) , (i, j+1), (i+1, j+1) construct another triangle, so that each discrete point can construct two trian...

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 aims at the problem how to reproduce the force touch of image textures and provides a method for reproducing the texture force touch based on a shape-from-shading technology from grey scales of an image. The method is characterized by processing the grey scales of a texture image; extracting the micro three-dimensional contour information of the true textures from the grey scale information of the image to be drawn into a virtual surface; rendering the textures of the virtual surface by a force touch model; and outputting calculated force from a general manual controller to an operator. The invention has the advantages that the miniature contour of an object surface is needless to be measured by a special instrument, a special texture force touch expression device is needless to design, and the like and can be used in the fields for simulating virtual environments, controlling remotely-operated robots, browsing remote museums and online shops, simulating surgeries, and the like.

Description

technical field [0001] The present invention relates to force-tactile reproduction in virtual reality technology, in particular to a texture force-tactile reproduction method based on the technology of recovering shape from image grayscale, which reconstructs a three-dimensional virtual surface of the texture from a single texture image, and The invention discloses a method for performing force-tactile rendering on a virtual surface, belonging to the technical fields of computer vision, virtual reality technology and teleoperation robot. Background technique [0002] With the application of virtual reality technology in the fields of surgical simulation, teleoperated robot control, and virtual manufacturing, the importance of force-tactile information feedback for virtual operations has become increasingly significant. In the virtual reality system, the texture characteristics of the object surface are fed back to the operator through the haptic reproduction device, which ca...

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): G06F3/01G06T17/00G06T15/00
Inventor 宋爱国李佳璐吴涓张小瑞
Owner JIANGSU HONGBO MACHINERY MFG
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