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Image edge brightness correction method and system, and device for image edge brightness correction method

An image edge and brightness technology, which is applied in the field of image processing, can solve the problems of image distortion in the edge area of ​​the image and the inability to judge the effective information of the image, and achieve the effect of smooth image, high edge definition and strong sense of reality

Pending Publication Date: 2022-02-22
NINGBO SUNNY OPOTECH CO LTD
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Problems solved by technology

However, in the existing methods, it is usually impossible to judge the effective information of the image, resulting in the problem of imaging distortion in the edge area of ​​the image

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  • Image edge brightness correction method and system, and device for image edge brightness correction method
  • Image edge brightness correction method and system, and device for image edge brightness correction method
  • Image edge brightness correction method and system, and device for image edge brightness correction method

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Embodiment Construction

[0058] For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are descriptions of exemplary embodiments of the application only, and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0059] It should be noted that in this specification, expressions of first, second, third, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features. Therefore, the first color block discussed below may also be referred to as the second color block without departing from the teaching of the present application. vice versa.

[0060] In the drawings, the thickness, size and shap...

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Abstract

The invention provides an image edge brightness correction method and system, and a device for the image edge brightness correction method. The method comprises the following steps: shooting a calibration target with a specific pattern, and obtaining an image with the specific pattern; determining an abnormal region of the edge of the image through a standard brightness gradient curve of the image, and calculating a brightness deviation coefficient of the abnormal region; determining a correctable region in the abnormal region based on a standard resolution change curve of the image; performing brightness correction on the correctable region according to the brightness deviation coefficient; meanwhile, reconstructing the image after the brightness correction through a trained convolutional neural network model to obtain a large-field-of-view image with high marginal definition. Thus, the corrected image can have characteristics that the edge definition is high, the image is smooth, and the sense of reality is strong while a maximum field-of-view angle is kept.

Description

technical field [0001] The present application relates to the field of image processing, and more specifically, to a method and device for correcting image edge brightness. Background technique [0002] As wide-angle selfies and macro shots become "necessary" camera functions for portable electronic products such as mobile phones, more and more portable electronic products begin to use large field of view (FOV) camera modules. Compared with the conventional camera module, the large FOV camera module has a larger viewing range, and the user can obtain a wider picture at the same shooting position. At the same time, the images captured under the macro condition also have the effect that the conventional camera module does not have, such as Obtain detailed information of the subject at close range. However, the image edge area of ​​the large FOV camera module will inevitably have the problem of brightness reduction. [0003] In addition, the free-form surface technology used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/33G06T7/90G06N3/04G06N3/08G06V10/44
CPCG06T7/344G06T7/90G06N3/08G06N3/045G06T5/77
Inventor 毛之华魏文燕褚哲文张露萍何艳宁
Owner NINGBO SUNNY OPOTECH CO LTD
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