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Camera distance measuring method

A distance measurement method and camera technology, applied in the field of measurement, can solve problems such as sacrificing real-time distance measurement, failure to meet vehicle application requirements, performance differences, etc., to improve measurement accuracy and speed, improve image matching speed, and reduce calculations. Effect

Pending Publication Date: 2022-04-05
HEFEI SOFTEC AUTO ELECTRONICS
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  • Abstract
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Problems solved by technology

However, due to the manufacturing, installation and process of the camera, there must be differences in the performance of the two cameras. It is necessary to calibrate and match the two cameras. The matching calculation is large and the speed is slow.
The high-precision measurement results of the existing binocular vision system are often at the expense of real-time ranging, which cannot meet the application requirements of the vehicle driving state

Method used

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Embodiment Construction

[0015] The specific implementation manner of the present invention will be further described in detail below by describing the embodiments in conjunction with the accompanying drawings.

[0016] A camera distance measuring method, when the vehicle is running, the camera collects images and shows the vehicle driving trajectory in the image collected by the camera in combination with the displacement information of the vehicle, comprising the following steps:

[0017] Step A, divide the image collected by the camera into an early warning area 11 and a monitoring area 12 according to the trajectory line 10, wherein the area inside the trajectory line 10 is the early warning area 11, and the area outside the trajectory line 10 is the monitoring area 12,

[0018] Step B, monitor the image, when the object enters the early warning area 11 from the monitoring area 12, select two images of the vehicle at different positions, and calculate the displacement b of the vehicle when the afor...

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Abstract

The invention belongs to the technical field of measurement, and particularly relates to a camera distance measurement method, which is used for performing binocular measurement on an obstacle by using images acquired by a camera when a vehicle is at different positions in a vehicle displacement state. The two images for analysis and processing are acquired by one camera, so that the calculation amount can be remarkably reduced to improve the image matching speed, and the measurement precision and the measurement speed are remarkably improved while the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a camera ranging method. Background technique [0002] Visual distance measurement technology includes binocular distance measurement and monocular distance measurement. Binocular distance measurement uses two cameras to shoot the measured target, obtains two digital images, and then obtains three-dimensional information based on the principle of triangulation. A triangle is formed between the image plane and the space point, and then the distance from the visual odometer test system to the target is calculated, and the distance measurement distance is shown in the attached diagram figure 1 shown. The spatial point P is the target to be measured, and its coordinates are (X, Y, Z), where Z is the depth distance from the target to the binocular camera. The projection point of the target to be measured on the image plane of the left eye camera is P 1 , the project...

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Application Information

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IPC IPC(8): G01C11/02G01C11/30
Inventor 许永华曹丽松涂德梅卫修明尹兴科
Owner HEFEI SOFTEC AUTO ELECTRONICS