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

Real-time reversing trajectory display method

A display method and trajectory technology, applied in image data processing, instrumentation, 2D image generation, etc., can solve the problem of not being able to help the driver observe the actual situation of the blind area behind the car, so as to solve the trajectory jump and ensure the accuracy of the simulation sexual effect

Active Publication Date: 2018-08-14
常州新途软件有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The reversing assistance system mainly used voice alarm prompts and ultrasonic radar earlier, neither of which could help the driver observe the actual situation in the blind area behind the car. The visual reversing assist system can help the driver to observe the blind spot behind the car when reversing, but the direction of reversing and the distance of obstacles behind the car still need to be judged by the driver based on experience

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
  • Real-time reversing trajectory display method
  • Real-time reversing trajectory display method
  • Real-time reversing trajectory display method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] figure 1 It is a method flowchart of the real-time reversing trajectory display method of the present invention.

[0059] Such as figure 1 As shown, the present embodiment provides a real-time reversing trajectory display method, including:

[0060] Step S101, first establish a mapping model from the world coordinate system to the image coordinate system combined with the second-order radial distortion model, so as to solve the internal and external parameters of the camera; and

[0061] In step S102, calculate the reverse trajectory predicted by the tire steering angle through the internal and external parameters of the camera.

[0062] figure 2 It is a flow chart of the method for solving the internal and external parameters of the camera in the present invention.

[0063] The specific steps to obtain the internal and external parameters of the camera are as follows:

[0064] Use the camera to capture a black and white checkerboard image, and use the black and whi...

Embodiment 2

[0121] Figure 5 It is a functional block diagram of the real-time reversing imaging display system of the present invention.

[0122] Such as Figure 5 As shown, on the basis of Embodiment 1, this embodiment provides a real-time reversing imaging display system, including:

[0123] A processor module, a camera for shooting reversing images, and a screen controlled by the processor module; wherein

[0124] The processor module is adapted to calculate the reversing trajectory line according to the reversing image, and draw the reversing trajectory line on the screen in real time.

[0125] The processor module is suitable for calculating the reversing trajectory line, that is, the processor module is suitable for first establishing a mapping model from the world coordinate system to the image coordinate system combined with the second-order radial distortion model, so as to solve the internal and external parameters of the camera; and then through The internal and external pa...

Embodiment 3

[0130] Figure 6 It is a flow chart of the method for drawing equal-width trajectory lines of the present invention.

[0131] See Figure 6 , on the basis of Embodiment 1, this embodiment provides a method for drawing equal-width trajectory lines, including:

[0132] Step S201, calculating the slope of the tangent line at each point of the centerline of the near-wide and far-narrow locus; and

[0133] Step S202, draw the trajectory line of equal width after perspective transformation through slope transformation.

[0134] Figure 7 It is a schematic diagram of trajectory lines in the drawing method of equal width trajectory lines of the present invention;

[0135] The specific calculation method of tangent slope is as follows:

[0136] The equal-width trajectory line drawn in world coordinates will be mapped to a trajectory line with near width and far narrowness after perspective transformation. To draw a trajectory line of equal width on the screen, it is necessary to ...

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 present invention relates to a real-time reversing trajectory display method, system and equal-width trajectory line drawing method. The real-time reversing trajectory display method includes: firstly establishing a mapping model from a world coordinate system to an image coordinate system combined with a second-order radial distortion model, and using Solve the internal and external parameters of the camera; and calculate the reversing trajectory predicted by the tire steering angle through the internal and external parameters of the camera; the real-time reversing trajectory display method and the real-time reversing imaging display system firstly avoid the dependence on the look-up table (LUT) for the rear-view camera image viewpoint change , which expands the scope of application and occasions, and can draw high-quality reversing tracks on the premise of occupying less CPU processing power resources, and solves the problems of track line jumps, edge jagged edges, and memory consumption caused by using the track database. , and then the reversing trajectory can be continuously updated in real time according to the angle of the steering wheel to ensure the simulation accuracy of the reversing trajectory.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to a method and system for displaying a real-time reversing track and a method for drawing equal-width track lines. Background technique [0002] The reversing assistance system mainly used voice alarm prompts and ultrasonic radar earlier, neither of which could help the driver observe the actual situation in the blind area behind the car. The visual reversing assist system can help the driver of the vehicle observe the blind spot behind the car when reversing, but the direction of reversing and the distance of the obstacles behind the car still need to be judged by the driver based on experience. [0003] Therefore, in order to solve the above problems, it is necessary to design a real-time reversing trajectory display method and display system Contents of the invention [0004] The object of the present invention is to provide a real-time reversing trajectory display meth...

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): G06T11/20G06T7/80
CPCG06T7/80G06T11/203
Inventor 张华朱枫
Owner 常州新途软件有限公司