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Image processing method and device thereof

An image processing and image technology, applied in the field of image processing, can solve the problems of discontinuity, unnatural transition, large noise, etc., and achieve the effect of good continuity, improved quality, and good quality.

Pending Publication Date: 2022-01-07
BRIGATES MICROELECTRONICS KUNSHAN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem solved by the present invention is to provide an image processing method and an image processing device to solve the problems of discontinuity, large noise and unnatural transition in the high dynamic range image transition area

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  • Image processing method and device thereof
  • Image processing method and device thereof
  • Image processing method and device thereof

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Embodiment Construction

[0029] As mentioned in the background art, an image synthesis method is needed to solve the problems of easy discontinuity, large noise and unnatural transition in the transition area.

[0030] Specifically, the image capture module continuously captures two frames of images with different exposure times and the same gain. Generally, the exposure time ratio of the long and short frames is used as the fusion ratio of the long and short frames, and then high dynamic range image synthesis is performed according to the fusion ratio of the long and short frames. However, due to fixed image noise, linearity, etc., the ratio of the pixel values ​​corresponding to the long and short frame images to the ratio of the exposure time is quite different, which makes the synthesized high dynamic range images prone to discontinuous transition areas, large noise, and uneven transitions. nature and other issues.

[0031] In order to solve the above problems, the technical solution of the prese...

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Abstract

The invention discloses an image processing method and a device thereof. The method comprises the following steps: acquiring continuous long-frame images and short-frame images; obtaining a long and short frame fusion proportion according to the pixel value of the long frame image and the pixel value of the short frame image; and synthesizing the long frame image and the short frame image into a high dynamic range image according to the long and short frame fusion proportion. The high dynamic range image synthesized by the method is high in quality.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image processing method and an image processing device. Background technique [0002] The dynamic range reproduced by digital images is an important factor in image quality. Many cameras today still cannot render scenes with High Dynamic Range (HDR) well. For example, a person standing in front of a window indoors on a sunny day often produces an image with a very dark portrait and a very bright background. To simultaneously present the portrait in front of the window and the scenery outside the window, it is necessary to generate high dynamic range image data. Dynamic range image data contains detail information of bright and dark parts. [0003] Combining two images with different exposure times can obtain a high dynamic range image, but when combining two images with different exposure times into a high dynamic range image, problems such as discontinuity, large noise, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235H04N5/217
CPCH04N23/81H04N23/741
Inventor 池国泉陈炜孙淑云
Owner BRIGATES MICROELECTRONICS KUNSHAN
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