Image exposure method and mobile terminal

A mobile terminal and image technology, applied in the field of image processing, can solve the problem that the exposure effect cannot obtain high-quality exposure images, and achieve the effect of improving quality

Active Publication Date: 2016-10-26
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an image exposure method and a mobile terminal to solve the problem in existing image processing schemes that a high-quality exposure image cannot be obtained due to the inability to only adjust the exposure effect of a certain area in the image to be exposed The problem

Method used

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  • Image exposure method and mobile terminal

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Experimental program
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Effect test

Embodiment 1

[0019] refer to figure 1 , shows a flow chart of an image exposure method according to Embodiment 1 of the present invention.

[0020] The image exposure method of the embodiment of the present invention includes the following steps:

[0021] Step S101: Expose with a first exposure parameter to obtain a first frame of image, and expose with a second exposure parameter to obtain a second frame of image.

[0022] Wherein, the first frame of images and the second frame of images are images continuously collected by the camera. Since these two images are continuously collected by the camera, there is almost no difference in the objects in the images. The image collected by the camera can be obtained by taking pictures in the background, or it can be an image that has been previewed and displayed in the preview interface.

[0023] It should be noted that the first exposure parameter and the second exposure parameter may be preset by the user, or may be obtained by the mobile ter...

Embodiment 2

[0032] refer to figure 2 , shows a flowchart of an image exposure method according to Embodiment 2 of the present invention.

[0033] The image exposure method of the embodiment of the present invention includes the following steps:

[0034] Step S201: the mobile terminal determines a partial viewing range.

[0035] Determining the local framing range and the target exposure effect before image exposure are two necessary conditions. The target exposure effect can be set by the user after the partial viewing range is determined, and the specific setting method can refer to the relevant description in step S204. When determining the local viewfinder range, any of the following methods can be used:

[0036] The first method: the mobile terminal determines the area in the preview interface that satisfies the set condition as the partial viewfinder range.

[0037] Wherein, the area satisfying the set condition may be the area occupied by the subject in the image, or the area i...

Embodiment 3

[0087] refer to image 3 , shows a structural block diagram of a mobile terminal according to Embodiment 3 of the present invention.

[0088]The mobile terminal in the embodiment of the present invention includes: a first image acquisition module 301, configured to obtain a first frame image by exposure with a first exposure parameter, and obtain a second frame image by exposure with a second exposure parameter, wherein the first frame image And the second frame image is the image that camera continuously collects; Partial image acquisition module 302, is used for according to predetermined partial viewfinder range, obtains the partial image overlapping with partial viewfinder range in described second frame image; Combination module 303, uses Combining the first frame image and the partial image to generate a preview image.

[0089] The mobile terminal according to the embodiment of the present invention obtains two frames of images collected continuously with different expo...

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Abstract

The invention provides an image exposure method and a mobile terminal. The method comprises the following steps of obtaining a first frame of image through a first exposure parameter and obtaining a second frame of image through a second exposure parameter, wherein the first frame of image and the second frame of image are images which are continuously collected by a camera; obtaining a local image which is coincident to the local view finding range in the second frame of image according to the predetermined local view finding range; and combining the first frame of image and the local image to generate a preview image. Through the image exposure scheme provided by the invention, the exposure effect of one region in a to-be-exposed image can be adjusted, so that the quality of the shot exposure image can be improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image exposure method and a mobile terminal. Background technique [0002] When shooting an image or displaying a viewfinder, controlling the camera to perform a reasonable exposure according to an appropriate exposure compensation is a crucial condition for obtaining a high-quality image. Most of the current mobile terminals support manual exposure adjustment. Manual exposure adjustment can be done in the following ways: the user triggers the mobile terminal to display the exposure bar on the screen by clicking the setting button, and the user slides the cursor in the exposure bar to adjust the image when shooting. The exposure compensation can be set to achieve the purpose of adjusting the exposure effect. [0003] At present, when a mobile terminal performs exposure processing on an image, it always performs the same exposure compensation processing on the entire ...

Claims

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Application Information

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IPC IPC(8): H04N5/243
CPCH04N23/76
Inventor 王康康
Owner VIVO MOBILE COMM CO LTD
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