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

Traffic signal light detection method and device

A technology of traffic signal lights and detection methods, applied in the field of unmanned vehicles, can solve problems such as no one involved, achieve the effect of improving the accuracy rate and recognition rate, and eliminating interference

Active Publication Date: 2018-11-06
FUZHOU HUAYING HEAVY IND MACHINERY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there have been some solutions on how to solve the positioning problem of traffic lights, the preconditions of this assumption, including how to deal with the source of error, have not been involved

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
  • Traffic signal light detection method and device
  • Traffic signal light detection method and device
  • Traffic signal light detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0049] 1. General idea

[0050] figure 1It shows two consecutive frames of camera images with a detection grid. This detection grid is formed by projecting the orientation area of ​​the traffic lights from the global coordinate system to the camera images. Our general idea is to use the detection grid to greatly narrow the positioning range of traffic lights on the image and roughly frame them, and then use the characteristics of the traffic signal itself (shape, color, etc.) to perform state detection. The most likely location of the traffic lights on the picture is the place with bright colors. It can be seen from the two pictures that the indication of the traffic lights just changes from red light to green light. while in figu...

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

A traffic signal light detection method and device, wherein the method includes the following steps: searching the traffic signal light according to the distribution information to obtain a rough estimated position of the traffic signal light; generating a coordinate network under the global coordinate system centered on the rough estimated position of the traffic signal light Grid, project the coordinate grid onto the camera image plane, calculate the position probability distribution of traffic lights in the coordinate grid after the real-time image information collected by the camera is transformed through the coordinate system, and divide the finely estimated position according to the position probability distribution; Each coordinate grid picture in the fine estimated position is filtered to generate the color probability distribution of traffic lights. The invention realizes the intelligent detection and identification of traffic signal lights.

Description

technical field [0001] The invention relates to the field of unmanned vehicles, in particular to an automatic identification method and device for traffic signal lights. Background technique [0002] For unmanned driving in real life, it is extremely important to be able to accurately determine the status of traffic lights at intersections (that is, which of the current traffic lights is yellow, green, or red). Even when the vehicle has a driver, it would be beneficial for the vehicle itself to be able to make a traffic light judgment, for example, to alert an inattentive driver of a light change or to provide color-blind drivers with evidence to drive safely. [0003] A very intuitive idea is that the vehicle directly obtains the traffic signal control information sent by the traffic control department to make a traffic driving judgment. The accuracy and timeliness of such judgment are better. In the demonstration, the active traffic signal light system can actively transm...

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): G06K9/00
CPCG06V20/584
Inventor 潘晨劲赵江宜
Owner FUZHOU HUAYING HEAVY IND MACHINERY