Automatic focusing method and automatic focusing device

A technology of automatic focusing and focusing position, applied in focusing device, installation, optics, etc., can solve problems such as inability to locate, holes in 3D depth map, and difficulty in recognizing relative depth, etc., and achieve the effect of good stability and fast focusing speed.

Active Publication Date: 2014-10-15
ALTEK SEMICON
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Problems solved by technology

However, generally speaking, when the current stereo vision technology image processing is used to obtain the three-dimensional seat position information of each pixel point in the image, it is often unable to accurately locate the position of each point in the image
Since it is difficult to identify the relative depth in areas without texture and flat areas, it is impossible to accurately obtain the depth information of each point, which may cause hol

Method used

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  • Automatic focusing method and automatic focusing device
  • Automatic focusing method and automatic focusing device
  • Automatic focusing method and automatic focusing device

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Example Embodiment

[0038] figure 1 It is a block diagram of an auto focus device shown in an embodiment of the present invention. Please refer to figure 1 The auto-focusing device 100 of this embodiment includes a first image sensor 110 and a second image sensor 120, a focusing module 130, a storage unit 140, and a processing unit 150. In this embodiment, the auto-focusing device 100 is, for example, a digital camera, a digital video camcorder (DVC), or other handheld electronic devices that can be used for video or photography functions, but the invention does not limit its scope.

[0039] Please refer to figure 1 In this embodiment, the first and second image sensors 110, 120 may include components such as lenses, photosensitive elements, or apertures for capturing images. In addition, the focusing module 130, the storage unit 140, and the processing unit 150 may be functional modules implemented by hardware and / or software. The hardware may include hardware devices or hardware devices with image...

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Abstract

The invention provides an automatic focusing method and an automatic focusing device. The automatic focusing method is suitable for the automatic focusing device, and includes: selecting a target object, and using first and second image sensors to photograph the target object so as to generate a first image and a second image; performing three-dimensional depth estimation according to the first image and the second image so as to generate a three-dimensional depth map; performing optimization processing on the three-dimensional depth map so as to generate an optimized three-dimensional depth map; judging depth information corresponding to the target object according to the optimized three-dimensional depth map, and obtaining a focusing position of the target object according to the depth information; and driving the automatic focusing device to execute an automatic focusing program according to the focusing position.

Description

technical field [0001] The present invention relates to an automatic focusing technology, and in particular to an automatic focusing method and an automatic focusing device using a stereo vision image processing technology. Background technique [0002] Digital cameras have a fairly sophisticated and complex mechanical structure, which further enhances the functionality and handling of the camera. In addition to factors such as the shooting skills of the user and the influence of the surrounding environment, the built-in Auto Focus (AF) system of the digital camera also has a considerable impact on the quality of the captured image. [0003] Generally speaking, auto-focus technology means that a digital camera will move the lens to change the distance between the lens and the subject, and corresponding to different lens positions to calculate the focus evaluation value of the subject picture (hereinafter referred to as the focus value) , until the maximum focus value is fou...

Claims

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Application Information

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IPC IPC(8): G03B13/36G02B7/36
Inventor 张文彦黄裕程周宏隆康仲嘉
Owner ALTEK SEMICON
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