Method of automatically optimizing scanning path based on ptz camera
A scanning path and automatic optimization technology, which is applied in the direction of image communication, color TV parts, TV system parts, etc., can solve the problems of wasting scanning time and low efficiency of scanning behavior, so as to avoid waste and solve work efficiency Low, less restrictive effect
Active Publication Date: 2021-08-31
CHENGDU YINENG SCI&TECH CO LTD
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Problems solved by technology
[0013] The purpose of the present invention is to provide a method for automatically optimizing the scanning path based on the PTZ camera, which solves the problem of face information detection in the space to be detected according to the fixed scanning path when collecting face information based on the PTZ camera at present, wasting scanning time, and The problem of low work efficiency when manually defining scanning behaviors for different rooms
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[0083] The goal of this embodiment is to realize that the PTZ automatically controls its own scanning behavior, minimizing external operations. The core is to let the PTZ camera have a series of inaccurate initial paths built in, and then combine and automatically adjust on these paths, and gradually tend to approximate optimality during the execution process.
[0084] Specifically, this embodiment may include the following steps:
[0085] 1. PTZ calculates a series of roughly parallel strip paths from near to far through parameters. Together, these paths can cover spaces far larger than the possible dimensions of a real room;
[0086]2. By combining the strip paths, an initial scanning path covering the actual deployment room is generated;
[0087] 3. Calculate the position of each detected face in the scan, compare it with the scan path and continuously optimize the scan path, which includes deleting parts of the scan path that do not have a face, and expanding the path un...
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The invention proposes a method for automatically optimizing a scanning path based on a PTZ camera, belonging to the security field. In order to solve the current problem of face information detection in the space to be detected based on a fixed scanning path when collecting face information based on a PTZ camera, the problem of wasting scanning time, the present invention includes: first, determining the initial scan of the PTZ camera in the area to be detected path and use it as the current scanning path, and set up a face information list; secondly, the PTZ camera moves along the current scanning path, and updates the face information list according to the face information in the scanning picture; then, according to the updated face information The list updates the current scanning path, and the PTZ camera moves along the updated scanning path. The invention can ensure that the PTZ camera collects clear enough face information of each person, does not impose restrictions on the layout of the detection space, and can optimize the route suitable for the layout of the current room personnel, avoiding the problem of wasting scanning time.
Description
technical field [0001] The invention relates to the security field, in particular to a method for automatically optimizing a scanning path based on a PTZ camera. Background technique [0002] In some scenarios, such as students attending classes in a classroom and members of an organization having a meeting in a room, it is necessary to confirm the identity of the people in the room, such as roll call. When people all have a unified facing direction, such as facing a wall of the room (blackboard, projection screen), deploy cameras at appropriate positions to collect facial images of all people in the room, and use face recognition related algorithms to efficiently and accurately Realize roll call to replace manual roll call. There are a few reasons why regular cameras can't do this job well: the camera's view angle isn't wide enough to cover the entire room; people's positions in the room may vary each time; distant faces in large rooms can't be clearly defined without zoom...
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IPC IPC(8): H04N5/232
CPCH04N23/611H04N23/695
Inventor 罗章璞
Owner CHENGDU YINENG SCI&TECH CO LTD