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A device and method for detecting a turn signal of a vehicle adjacent to a lane

A technology of approaching lanes and detection devices, applied in signal devices, instruments, scene recognition, etc., can solve the problems of poor application of turn signal recognition technology, no early warning, and delayed early warning function, so as to improve driving safety and detection efficiency. , to avoid the effect of lag

Active Publication Date: 2020-10-09
HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the vehicle in the adjacent lane turns on the turn signal and then suddenly changes to the current lane, the early warning function is relatively lagging. It needs to wait until the vehicle changes lanes to start detection and early warning. If the speed of the vehicle is too fast, the brakes may not be timely There is a collision with the vehicle in front, so it is necessary to give an early warning before the vehicle in front changes lanes, and the current turn signal recognition technology is not well applied to this scene due to limitations
And if the vehicle detection technology is applied to the turn signal detection, there is a problem of detection accuracy itself, and the full-screen real-time detection of the turn signal has problems in detection efficiency, and it is not very good for timely early warning for the above scenarios

Method used

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  • A device and method for detecting a turn signal of a vehicle adjacent to a lane
  • A device and method for detecting a turn signal of a vehicle adjacent to a lane

Examples

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Embodiment 1

[0023] This embodiment provides a vehicle turn signal detection device adjacent to the lane, such as figure 1 As shown, it includes an image capture unit, a vehicle and lane line recognition unit, a vehicle judgment unit, a turn signal recognition unit, a CAN output unit and a vehicle control unit connected in sequence. The output of the image capture unit is used as the input of the vehicle and lane line recognition unit, and the vehicle and lane line recognition unit outputs the recognized vehicle world coordinates, image coordinates, image frame information and lane lines to the vehicle judging unit equation.

[0024] The vehicle judging unit is used to calculate the lane line of the lane where the vehicle is located according to the lane line equation, identify the vehicle ID information on the left or right side of the vehicle lane line that meets the preset conditions, and output the vehicle information to the turn signal Recognition unit; the turn signal recognition un...

Embodiment 2

[0026] The present invention also provides a method for detecting the turn signal of an adjacent lane vehicle, such as figure 2 shown, including:

[0027] Step S100: Determine the left and right lane line equations of the current lane. The output of the vehicle and lane line recognition unit is four lane line equations (y=A0+A1*x+A2*(x 2 )+A3*(x 3 ), the projection from the center of the front of the car to the ground is the origin, the longitudinal direction of the front of the car is the x-axis, the lateral direction is the y-axis, and the left side is positive), and the vehicle information recognized in front (including the ID of the vehicle, the world coordinate position, the image coordinate position, the image box information). Comparing the A0 of the four lane lines, the one that is less than 0 and the closest to 0 is the right lane line of the current lane, and the one that is greater than 0 and the closest to 0 is the left lane line of the current lane.

[0028] ...

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Abstract

The invention discloses a vehicle turn signal detection device in an adjacent lane, which includes a vehicle judging unit and a turn signal recognition unit. Vehicles on the left or right that meet the preset conditions, and output the vehicle information to the turn signal recognition unit; the turn signal recognition unit is used to find the image coordinates and image frame of the corresponding vehicle according to the input vehicle information Information, save half of the screenshot where the vehicle is located and compare it with the screenshot saved in the previous frame. If there is a difference and the difference value is within the preset range, it is judged that the vehicle turn signal is turned on. The adoption of the technical solution can avoid under-braking and collisions caused by lane changes of adjacent vehicles, thereby improving driving safety and detection efficiency.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a detection device and method for a turn signal of a vehicle adjacent to a lane. Background technique [0002] With the development of technology, people are committed to researching real-time road vehicle and lane line detection technology to remind drivers to pay attention to the surrounding driving environment at all times and avoid collisions with other vehicles. Real-time vehicle and lane line detection technology refers to the on-board camera shooting the road ahead, using computer vision technology to ensure the driving safety of the vehicle by detecting the position and lane line of the vehicle in front. In recent years, vehicle and lane detection technology has been developed rapidly and applied to ADAS products to realize some functions, such as forward collision warning function. This function can well remind the driver of the possibility of vehicle collisio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60Q9/00G06K9/00
CPCB60Q9/008G06V20/58G06V20/584
Inventor 梁迪
Owner HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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