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Distance estimation method based on pedestrian head height

A distance estimation and distance technology, which is applied in the field of intelligent image visual distance estimation, can solve the problems of low complexity and high cost performance, and achieve the effect of small calculation, strong real-time performance and simple algorithm processing method

Inactive Publication Date: 2019-06-21
DALIAN NATIONALITIES UNIVERSITY
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Problems solved by technology

[0006] In order to solve the unified problem of high cost performance, strong real-time performance and low complexity in the distance between people and vehicles, the present invention proposes the following technical solutions:

Method used

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  • Distance estimation method based on pedestrian head height
  • Distance estimation method based on pedestrian head height
  • Distance estimation method based on pedestrian head height

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Experimental program
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Effect test

Embodiment 1

[0047] In this implementation example, the vehicle-mounted camera (3000*4000@30Hz) is used to complete the experimental image collection. This image was shot on the street in spring. There are 3 pedestrians in the image. They are walking away from the direction of the camera and crossing in front of the camera. . Through the present invention, the distance between the target pedestrian and the camera is estimated, and the distance estimation result and the real distance between the two are as follows: image 3 As shown, the error means no more than 1m.

Embodiment 2

[0049] In this implementation example, the vehicle-mounted camera (3000*4000@30Hz) is used to complete the experimental image collection. This image was shot on the street in spring. The image contains 5 target pedestrians, walking in the direction facing the camera, crossing the front of the camera, crossing the Zebra crossing, walking away from the camera and playing with the phone on the side of the road. Through the present invention, the distance between the target pedestrian and the camera is estimated, and the distance estimation result and the real distance between the two are as follows: Figure 4 shown. The error value does not exceed 1m.

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Abstract

A distance estimation method based on pedestrian head height belongs to the field of intelligent image visual distance estimation, is used for solving the problems of high cost performance, strong real-time performance and low complexity unification of a pedestrian-vehicle distance, and is characterized in that head part pixel heights at different distances are obtained in an image; a rigidity part dimension-distance interpolation model is constructed; the pixel height of the pedestrian head part to be measured in the image is acquired and input as the ridgity part dimension-distance interpolation model, the distance is acquired. The method has the effects such as little calculation amount of the rigidity part dimension-distance interpolation model. Additionally, the requirement of an autonomous automobile to a distance estimation system is met in the real-time nature.

Description

technical field [0001] The invention belongs to the field of intelligent image visual distance estimation, and specifically relates to a method for estimating distance through the pixel height of pedestrian's head. Background technique [0002] With the popularization of automobiles, the safety of vehicles and pedestrians has gradually received widespread attention. As the main basis for pedestrian hazard judgment, various distance estimation systems have emerged as the times require. The distance estimation system can not only judge the danger of pedestrians, but also provide data support for vehicle trajectory planning and pedestrian obstacle avoidance, which has become a research hotspot in recent years. [0003] Nowadays, there are various methods for distance, which can be specifically divided into: estimating distance based on visible light, estimating distance based on infrared light, and estimating distance through various distance measuring instruments. [0004] T...

Claims

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Application Information

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IPC IPC(8): G06T7/73G01C11/04
Inventor 杨大伟程凡毛琳
Owner DALIAN NATIONALITIES UNIVERSITY
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