Camera focusing method and device, and camera

A focusing method and camera technology, applied in the field of image processing, can solve problems affecting user experience, ignoring detailed areas, and poor focusing effects, so as to reduce the amount of calculation, reduce the probability of blurred images, and improve the effect of focusing

Active Publication Date: 2018-11-30
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

Because usually when the human eye is watching, the focus of the line of sight usually falls in the center of the line of sight, so the center weight mode is to expand the weight of the center area, so that the focus result is biased towards the objects in the middle area, but in fact the middle area may not be the detail area , so the resulting focusing effect may not be good; and the global weight mode is to maintain the AF statistical value trend of the original output of the

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  • Camera focusing method and device, and camera
  • Camera focusing method and device, and camera
  • Camera focusing method and device, and camera

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Embodiment Construction

[0083] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0084] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article, unless otherwise specified, generally indicates that the contextual objects are an "or" relationship.

[0085] In the specific practice process, the camera determines the motor travel position corresponding to the focus according to the definition evaluation value of the current picture, so as to focus. However, when calculating ...

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Abstract

The invention discloses a camera focusing method and device, and a camera. The camera focusing method and device are used for improving a focusing result of the camera. The method comprises the following steps: determining a detail region from a picture shot by the camera, wherein the detail region is a sub-region located by the details in the shot picture; setting a weight value of the detail region as a preset weight value, wherein the preset weight value is greater than the weight value of other region except the detail region; computing the definition of the shot picture based on the detail region and the preset weight value, and focusing according to the definition. Therefore, the detail region is determined from the picture shot by the camera, and then the weight of the detail regionis set as the maximum weight value in the current picture, so that the focusing result obtained through focusing can tend to the region located by the details, the picture fuzzy probability is reduced, and het focusing effect is improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a camera focusing method, device and camera. Background technique [0002] At present, the camera is based on the sharpness evaluation value of the current picture to determine the motor travel position corresponding to the focus, so as to focus, so the accuracy of the sharpness evaluation value is closely related to the focusing effect. At present, the chips in cameras provided by most manufacturers only support the calculation of regional-level Auto Focus (AF) statistics, for example figure 1 As shown in , it is a schematic diagram of calculating region-level AF statistics for an image. Among them, the entire image is divided into 15*17 regions, and the definition evaluation value of each region is calculated through the definition evaluation function, and then weighted and summed to obtain the definition evaluation value of the entire image. Such as figure 1 As sho...

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/62
Inventor 陈天钧虞卫勇潘润发李斌斌陈明珠
Owner ZHEJIANG DAHUA TECH CO LTD
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