Automatic focusing method and system and integrated camera

A technology of auto focus and focus lens, which is applied in the field of focus, can solve the problems of conflict between focus speed and focus precision, automatic focus reference value is not easy to unify, etc., and achieve the effect of solving the conflict between focus speed and focus precision and good actual focus effect

Inactive Publication Date: 2014-08-06
SHENZHEN INFINOVA
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide an automatic focusing method, which aims to solve the problem that the existing automatic focusing method is not easy to unify the automatic focusing reference value in different scenes, and there is a conflict between the focusing speed and the focusing precision

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  • Automatic focusing method and system and integrated camera
  • Automatic focusing method and system and integrated camera
  • Automatic focusing method and system and integrated camera

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Embodiment Construction

[0018] 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.

[0019] The embodiment of the present invention firstly determines the moving direction of the focus lens, and then divides the automatic focus search process into multiple stages, including the initial stage to prevent clear→blur→clear state, the blur stage to quickly search to reach the quasi-sharp state, and Accurately search for the maximum autofocus value and stop in time for the clear stage, obtain the autofocus value obtained in each stage until the maximum autofocus value is searched, and finally move the focus lens to the position corresponding to the maximum autofocus value. Wherein the in...

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Abstract

The present invention is applicable to the field of focusing technology, and provides an automatic focusing method and system and an integrated camera. The automatic focusing method includes the following steps: determining the moving direction of the focusing lens; dividing the automatic focusing search process into multiple stages, and sequentially Including the initial stage to prevent clear→blur→clear state, the fuzzy stage to quickly search for the quasi-clear state, and the clear stage to accurately search for the maximum autofocus value and stop in time, and obtain the autofocus value obtained in each stage until The maximum auto-focus value is found; move the focus lens to the position corresponding to the maximum auto-focus value. In this way, there is no need to preset the auto focus reference value, and the gradual movement in the initial stage and the clear stage ensures the focusing accuracy, and the stepping movement in the blur stage takes into account the focusing speed, which better solves the conflict between the focusing speed and the focusing accuracy, and achieves a good practical The focus effect, especially makes the automatic focus method and system suitable for an integrated camera.

Description

technical field [0001] The invention belongs to the technical field of focusing, and in particular relates to an automatic focusing method and system and an integrated camera. Background technique [0002] Due to the wide application of photoelectric image sensors CCD and CMOS in the field of image and video, digital cameras and video cameras can be seen everywhere in engineering applications and daily life. Whether it is a digital camera or a video camera, its main function is to obtain a clear image, that is, to achieve the best clarity of the image by adjusting the position of the lens focusing lens group. Therefore, focusing technology has become the key to imaging products, especially cameras. [0003] In the field of surveillance, most advanced auto-focus technologies are developed by Japan and South Korea. China's integrated camera market is mainly occupied by Japanese and Korean manufacturers. In addition to the leading Sony and Hitachi, there are also Sanyo, Samsu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B13/36G02B7/36H04N5/232
Inventor 徐颖欣
Owner SHENZHEN INFINOVA
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