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

Multi-linewidth circle undistorted drawing method for head-up display

A technology without distortion and line width, applied in the generation of 2D images, instruments, calculations, etc., can solve the problems of low hardware requirements, poor anti-aliasing effect of multi-line width circles, etc., to achieve strong practicability, enhanced display effect, Show good results

Active Publication Date: 2022-06-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a HUD-oriented multi-line width circle distortion-free drawing method, which can solve the problem of poor anti-aliasing effect in drawing multi-line width circles, and is suitable for circles with any line width and any radius Distortion-free rendering with low hardware requirements

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
  • Multi-linewidth circle undistorted drawing method for head-up display
  • Multi-linewidth circle undistorted drawing method for head-up display
  • Multi-linewidth circle undistorted drawing method for head-up display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] It should be noted that the terms such as "up", "down", "left", "right", "front", "rear", etc. quoted in the invention are only for the convenience of description and clarity, and are not used for Limiting the applicable scope of the present invention, the change or adjustment of the relative relationship shall be regarded as the applicable scope of the present invention without substantially changing the technical content.

[0038] The embodiment of the present invention proposes a distortion-free drawing method for a multi-line-width circle for HUD. The drawing method is to draw a ray from the center of the circle, and determine the intersection of the ray and the inner and outer diameters of the multi-line-width circle through angle traversal. , and then determine the range of the rectangular scan frame according to the intersection of the inner diamete...

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 head-up display-oriented undistorted drawing method for a multi-line-width circle, which comprises the following steps of: leading out a ray from the center of a circle, determining intersection points of the ray and the inner diameter and the outer diameter of the multi-line-width circle through angle traversal, and determining the range of a rectangular scanning frame according to the intersection points of the inner diameter and the outer diameter, and traversing the pixel points in the scanning frame, determining a weight value according to the difference between the distance between the pixel points and the circle center and the radius, and drawing a multi-linewidth circle by combining the weight value. The method can solve the problem that the anti-aliasing effect is poor when a multi-line-width circle is drawn, is suitable for undistorted drawing of a circle with any line width and any radius, and has low requirements on hardware.

Description

technical field [0001] The invention relates to the technical field of graphic display, in particular to a multi-line-width circle distortion-free drawing method oriented to head-up display. Background technique [0002] A circle is one of the most basic elements of computer graphics. In many display systems, it is necessary to draw a circle with any line width and any radius. The common drawing method of multi-line-width circle adopts the Bresenham algorithm to determine the outline of 1 / 8 circle, and then determines the outline of the whole circle according to symmetry, and uses multi-sampling algorithm to apply anti-aliasing effect to the circle. This method is simple, convenient and fast to implement, but the anti-aliasing effect obtained is poor and the dynamic display effect will have a tearing problem. How to quickly and easily draw a multi-line width circle without distortion has become an important research content. SUMMARY OF THE INVENTION [0003] Aiming at th...

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): G06T11/20
CPCG06T11/203G06T11/206
Inventor 李涵夏伟杰李文强张川周钰致刘伟强周建江苏霖李海林
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS