Distance measurement method, device and equipment

A distance measurement method and distance technology, applied in the field of image processing, can solve the problems of being unable to effectively know the distance between the target object and the traffic control equipment, and the distance accuracy is low, and achieve the effect of low hardware requirements and high distance accuracy

Active Publication Date: 2020-10-16
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
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Problems solved by technology

However, in related technologies, the distance between the target object and the traffic control equipment cannot be effectively known, and the accuracy of the distance is low

Method used

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  • Distance measurement method, device and equipment
  • Distance measurement method, device and equipment
  • Distance measurement method, device and equipment

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Embodiment Construction

[0030] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, rather than limiting the present application. As used in this application and the claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although the embodiments of the present application may use terms such as first, second, and third to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second ...

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Abstract

The invention provides a distance measurement method, device and equipment. The method comprises the following steps of: carrying out face detection on an image acquired by a target camera system; when a face of a target object is detected in an image acquired by the target camera system, extracting face key point feature information and performing matching to obtain pixel coordinates of a key point couple; converting pixel coordinates of the key point couple into three-dimensional coordinates of the key point couple under a camera coordinate system based on camera calibration parameters of the target camera system; wherein the camera calibration parameters comprise camera internal parameters and camera external parameters; and determining the distance between the target object and the target camera system based on the three-dimensional coordinates of the key point couple in the camera coordinate system. By means of the technical scheme, the distance between the target object and passage control equipment can be effectively obtained, and high-precision distance information is obtained.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a ranging method, device and equipment. Background technique [0002] Access control equipment (such as access control equipment, gate equipment, etc.) has the functions of access control, authorization, query, statistics and alarm, and can also realize personnel management and attendance management, and can be linked with electromechanical equipment and control systems, which is convenient for internal users. Free entry and exit, and prevent random entry and exit of external users, improve security and prevention capabilities. The access control device can deploy a camera, and through the camera, collect images including the target object, recognize the face information of the target object, and decide whether to allow the target object to pass through the access control device. For example, after the target object approaches the traffic control device, it ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02G06K9/00G06T7/80
CPCG01B11/026G06T7/80G06V40/166G06V40/168
Inventor 步青梁桥苏星沈林杰
Owner HANGZHOU HIKVISION DIGITAL TECH
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