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High-dynamic image capturing method and mobile terminal

A high dynamic image and shooting method technology, applied in the field of communication, can solve the problem of lack of details in the dark and bright parts of the image, and achieve the effect of improving the image quality

Active Publication Date: 2018-02-16
VIVO MOBILE COMM CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a high dynamic image shooting method and a mobile terminal to solve the problem of lack of details in the dark and bright parts of the image when shooting scenes with high brightness contrast in the prior art

Method used

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  • High-dynamic image capturing method and mobile terminal

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] figure 1 A flow chart of a high dynamic image shooting method according to an embodiment of the present invention is shown. Such as figure 1 As shown, the method includes:

[0029] Step 120, acquiring the grayscale histogram of the preview image captured by the camera.

[0030] When the mobile terminal controls the camera to perform imaging, it first needs to control the camera to focus on the scene that needs to be imaged. At this time, the ...

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Abstract

The invention discloses a high-dynamic image capturing method and a mobile terminal, and the method comprises the steps: obtaining a gray scale histogram of a preview image collected by a camera; determining an underexposure image exposure quantity and a high-exposure image exposure quantity based on the gray scale histogram; controlling the camera to capture a normal exposure image, an underexposure image and a high-exposure image based on the underexposure image exposure quantity and the high-exposure image exposure quantity; carrying out the image synthesis of the normal exposure image, theunderexposure image and the high-exposure image, and generating a high-dynamic-range image. The method can achieve the better presentation of the details of excessively bright and dark regions in a photographing scene, and improves the imaging quality.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a high dynamic image shooting method and a mobile terminal. Background technique [0002] Taking pictures through a smart terminal such as a mobile phone is one of the operations commonly used by users. With the advancement and development of lenses and control algorithms applied to smart terminals, taking pictures through smart terminals can basically meet the daily use requirements of users. However, there are still some unavoidable problems in taking pictures through smart terminals, especially because the dynamic range of the image sensor of the smart terminal is limited. In scenes with high brightness contrast, the dynamic range of a single frame image is often insufficient, resulting in the image sensor imaging Sometimes the dark parts are too dark, and the bright parts are overexposed, so that the details of the dark and bright parts of the image cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235H04N5/232H04N5/265
CPCH04N5/265H04N23/62H04N23/80H04N23/741
Inventor 赖有攀
Owner VIVO MOBILE COMM CO LTD
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