Capture method and device, video camera

Abstract

The present application relates to the technical field of monitoring, and in particular to a method and device for capturing pictures, and a camera. The capture method of the present application includes: after the predetermined capture position is determined, obtaining the position angle parameter and the magnification parameter corresponding to the predetermined capture position; obtaining the capture focus parameter of the camera according to the position angle parameter and the magnification parameter; adjusting according to the capture focus parameter The focus of the camera; make the camera capture images at the predetermined capture position. This application can directly set the capture focus of the camera during capture, which reduces the time to search for the focus position, and takes a short time to focus. It can capture in real time during monitoring. The focus effect is good, and the blurred state of the shooting picture is reduced to a certain extent.

Description

technical field [0001] The present application relates to the technical field of monitoring, and in particular to a method and device for capturing pictures, and a camera. Background technique [0002] PTZ camera is a camera that can move horizontally and vertically and zoom control in all directions in space, and can change the shooting angle and focus during monitoring. PTZ is short for Pan / Tilt / Zoom. [0003] The process of the existing PTZ camera capturing human faces in monitoring is as follows: the camera rotates and zooms to the scene area to be monitored according to the preset position to capture the human face; The current shooting picture is in focus; when the focus is clear, the face recognition function will be activated to capture the faces in the current picture. [0004] There are the following disadvantages in this face capture method: the speed of automatic focus cannot meet the real-time requirements of face capture—that is, when the camera moves in plac...

AI Technical Summary

Problems solved by technology

[0004] There are the following disadvantages in this face capture method: the speed of automatic focus cannot meet the real-time requirements of face capture—that is, when the camera moves in place, the automatic focus function needs to be executed, and the automatic focus will gradually converge on the current shooting picture. Keep converging until the current shooting picture is clear

Therefore, it takes a certain amount of time to ensure the clarity of the current picture, so the real-time performance of the capture cannot be guaranteed.

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