Method and device for triggering camera to perform automatic focusing

An automatic focusing and camera technology, applied in the field of cameras, can solve the problem of high power consumption, and achieve the effect of maintaining images and reducing power consumption.

Active Publication Date: 2016-01-20
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to solve the problem that the traditional auto-focus method easily leads to high power consumption, and provide a method to trigger the camera's auto-focus, which can adjust the frequency of auto-focus and reduce power consumption

Method used

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  • Method and device for triggering camera to perform automatic focusing
  • Method and device for triggering camera to perform automatic focusing
  • Method and device for triggering camera to perform automatic focusing

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] It can be understood that the terms "first", "second" and the like used in the present invention can be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first client could be termed a second client, and, similarly, a second client could be termed a first client, without departing from the scope of the present invention. Both the first client and the second client are clients, but they are not the same client.

[0028] figure 1 It is a schematic diagram of a...

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Abstract

The invention relates to a method and device for triggering a camera to perform automatic focusing. The method includes the following steps that: the values of the focusing definition and the brightness values of each frame of image in a plurality of continuous frames of images are obtained; whether a scene changes is judged according to the values of the focusing definition and the brightness values; the change rate of the values of the focusing definition is obtained according to the values of the focusing definition of each frame of image in the plurality of continuous frames of images, and whether the change rate of the values of the focusing definition is larger than a change rate threshold value is judged, if the change rate of the values of the focusing definition is larger than the change rate threshold value, it is judged that an image is moving; whether the direction of acceleration changes is judged; and when the scene changes, the image moves, and the direction of the acceleration changes, the camera is triggered to perform automatic focusing. According to the method and device for triggering the camera to perform automatic focusing, the camera is controlled to perform automatic focusing through a plurality of constraint conditions, and the frequency of the automatic focusing of the camera can be controlled, and power consumption can be decreased, and automatic focusing can be performed when conditions are satisfied, and the clarity of the image can be kept as much as possible.

Description

technical field [0001] The invention relates to the field of cameras, in particular to a method and device for triggering automatic focusing of a camera. Background technique [0002] In the development of camera-based applications, you will encounter the need to allow the camera to focus continuously, such as during video recording, video passing, or QR code scanning or taking pictures. There are two ways to achieve continuous focus of the camera, one is to give The system is automatic and continuous focusing, and the other is manual continuous focusing. [0003] In the process of taking pictures, the frequency of focusing is high. Focusing through automatic continuous focusing is simple and fast. However, the terminal device needs to be able to adapt to the hardware device. Secondly, the frequency of focusing cannot be controlled, and it may focus relatively frequently. lead to high power consumption. Contents of the invention [0004] Based on this, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
Inventor 李凯
Owner TENCENT TECH (SHENZHEN) CO LTD
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