Focus processing method and device, and terminal device

A processing method and technology of terminal equipment, applied in the field of photography, can solve the problems of reducing the number of pixels, increasing the pixel area, increasing the cost of the camera module, etc., to achieve the effect of improving the accuracy and speed, improving the picture quality and reducing the cost

Active Publication Date: 2017-05-31
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

[0004] However, in the above-mentioned Dual Pixel CMOS AF method, the area of ​​the photosensitive element in the image sensor must be large, reaching 1/2.5 inch, so that the size of the pixel needs to be 1.44 microns (um)
This makes the height of the camera module need to be inc

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  • Focus processing method and device, and terminal device
  • Focus processing method and device, and terminal device
  • Focus processing method and device, and terminal device

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[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0033] The embodiments of this application are mainly aimed at the prior art. By configuring two photodiodes for each pixel in the image sensor to perform self-focusing, it will increase the height of the camera module and increase the structural design and installation in the mobile phone. The difficulty of the problem, and the number of pixels should be greatly reduced, and the increase in the area of ​​the photosensitive element and the area of ​​the pixels will also increase the cost of the came...

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Abstract

The invention discloses a focus processing method and device, and a terminal device. The focus processing method is applied to the terminal device with a master camera module and a secondary camera module. Each light filter unit in the secondary camera module corresponds to a combination pixel in a secondary image sensor. Each combination pixel comprises at least n adjacent pixels. The n is an even number greater than 2. The method comprises the steps of obtaining a first image collected by left n/2 pixels and a second image collected by right n/2 pixels of the same combination pixel in the secondary camera module; judging whether phase difference between the first image and the second image is in a preset range or not; and if the phase difference is not in the preset range, controlling a master motor in the master camera module to drive a master camera to move according to a preset strategy and the phase difference. The focus precision and speed are improved, the rapid focus cost is reduced, and the quality of the image photographed by the terminal device is improved.

Description

technical field [0001] The present invention relates to the technical field of photography, in particular to a focus processing method, device and terminal equipment. Background technique [0002] With the development of smart phones, the requirements for camera functions of mobile phones are getting higher and higher, especially the fast focusing function, because only after fast focusing can a clear scene be quickly captured. [0003] At present, the fast focus processing method used is through Dual Pixel CMOS AF (Dual Pixel CMOS AF). Each pixel on the image sensor corresponds to the same microlens, and two photodiodes are configured. During autofocus, through two photodiodes, each pixel can obtain two signals (A image and B image) at the same time at a time, and calculate the driving amount and driving direction of the camera by comparing the parallax signals of A image and B image, and then Drive the camera to focus. [0004] However, in the aforementioned Dual Pixel C...

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/672H04N25/704G03B13/36H04N23/45H04N23/90G02B5/201G02B7/38
Inventor 李小朋张弓
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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