Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for extracting internal flow particle image of curved surface visualization model

A particle image and extraction method technology, which is applied in image data processing, 3D image processing, 3D modeling, etc., can solve the problems of inability to obtain clear and undistorted particle images, insufficient optical conditions for surface visualization models, etc., to improve the margin. , good monochromaticity, and the effect of ensuring calibration accuracy

Active Publication Date: 2020-11-17
CHINA ACAD OF AEROSPACE AERODYNAMICS
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a method for extracting an image of inflow particles in a curved surface visualization model, to solve the deficiency of the optical conditions of the existing curved surface visualization model, and to obtain clear and undistorted particles inside it image problem

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 extracting internal flow particle image of curved surface visualization model
  • Method for extracting internal flow particle image of curved surface visualization model
  • Method for extracting internal flow particle image of curved surface visualization model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] A method for extracting an image of inflow particles in a curved surface visualization model provided by the embodiment of the present application will be further described in detail below in conjunction with the accompanying drawings. The specific implementation of the method may include the following steps (the process of the method is as follows: figure 1 shown):

[0030] Step 1: Determine the basic optical layout for photographing the internal flow field of the visualized model in the present invention, and simulate the optical path difference of each photographing point.

[0031] Specifically, in the solution provided by the embodiment of the present application, in the case of no correction, the visualization window is generally designed with equal thickness, and it can be treated as an approximate spherical surface, such as figure 1 , where O is the center of the sphere, the radius of the inner surface of the model is r1, the radius of the outer surface is r2, th...

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 a method for extracting an internal flow particle image of a curved surface visualization model, which can be used for realizing a clear and distortion-controllable particle image in a three-dimensional curved surface visualization window so as to measure speed field, and belongs to the technical field of spaceflight particle image speed measurement. The method comprises the following steps: determining an optical layout shot by a flow field in a visual model, and simulating an optical path difference of each shooting point; arranging a plano-convex compensation mirroroutside the visual model to form a compensation optical system for compensating the optical path difference of each shooting point, so that optical paths from points illuminated by a laser sheet to image points on a camera shooting chip are consistent; shooting a standard calibration plate image in a sheet light illumination plane by using a compensation optical system, and establishing a mappingrelationship between a distorted image and a theoretical distortionless image; and shooting a particle image in a test state, and correcting the particle image by using the mapping relationship obtained by calibration.

Description

technical field [0001] The invention relates to a method for extracting an image of inflow particles in a curved surface visualization model. By using the method, a clear and distortion-controllable particle image inside a three-dimensional curved surface visualization window can be realized, and then the velocity field can be measured, which belongs to the technical field of aerospace particle image velocity measurement. Background technique [0002] In the design of the new generation of aircraft, in order to improve its stealth performance, the engine is required to be arranged inside the fuselage and buried in the fuselage, which requires the engine inlet to be designed in an S shape. The S-shaped inlet can not only reduce the radar cross section of the propulsion system, but also because the entire propulsion system is built into the fuselage, the resistance of the whole machine is greatly reduced, which is conducive to improving the flight performance of the whole machi...

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): G06T17/00G06T15/00G06F30/25
CPCG06T17/00G06T15/00G06F30/25Y02T90/00
Inventor 王宏伟袁明磊李晓辉于靖波王旭东黄湛秦永明
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com