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Distance measuring method and device

A distance measurement method and distance technology, applied in the field of measurement, can solve the problems of high cost of distance measurement and achieve the effects of cost saving, convenient use and simple operation

Active Publication Date: 2013-03-20
XIAOMI INC
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Problems solved by technology

[0004] Embodiments of the present invention provide a distance measurement method and device to solve the problem of high measurement cost in existing distance measurement

Method used

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Embodiment Construction

[0018] In the embodiment of the present invention, by acquiring two imaging views containing the target object, the imaging points corresponding to the same point of the target object on the two imaging views are determined, and according to the lateral direction of the image plane coordinate system between the two imaging points, Coordinate difference, the lateral distance of the optical centers of the two cameras, and the focal length of the two cameras determine the distance from the target object to the imaging plane, so that the terminal with two cameras can be used for distance measurement, the measurement cost is low, and it is not easily affected. Environmental interference.

[0019] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, it is a flow chart of the ranging method of the embodiment of the present invention, including the following steps:

[002...

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Abstract

The embodiment of the invention relates to the technical field of mobile communication and in particular relates to a distance measuring method and device, aiming at solving the problems that the measuring cost is high and the measuring is easily interfered by environment in the conventional distance measuring. The distance measuring method of the embodiment of the invention comprises the following steps of: obtaining two imaging views containing a target object, wherein the two imaging views are photographed by two different cameras, optical centers of the two cameras are spaced by a set distance in the transverse direction, and imaging planes of the different cameras are on a same plane; determining an imaging point corresponding to the same point of the target object on the two imaging views; and determining the distance from the target object to the imaging plane according to the difference between transverse coordinate values of the two imaging points at an image plane coordinate system, the transverse distance of the optical centers of the two cameras and the focal length of the two cameras, so that a terminal comprising two cameras can be utilized to measure the distance. According to the distance measuring method and the device provided by the invention, the measuring cost is low, and the measuring is difficultly interfered by environment.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a distance measuring method and device. Background technique [0002] At present, the commonly used distance measurement methods include ruler measurement method, line-of-sight measurement method, infrared, laser, ultrasonic distance measurement, etc.; the traditional ruler measurement method uses direct measurement, the application range is limited, and the measurement needs to participate There are many people (generally more than 2 people), and the line-of-sight measurement is greatly affected by individuals and the environment, resulting in large measurement errors; the use of infrared, laser, ultrasonic and other distance measurement requires the use of sophisticated electronic instruments, which are generated after signal processing Digital measurement information has high measurement costs. [0003] To sum up, the existing ranging methods have the problem of high mea...

Claims

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Application Information

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IPC IPC(8): G01C3/00G01C11/00
Inventor 石新明底浩吴正海
Owner XIAOMI INC
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