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Image synthesis method and device and storage device

An image synthesis and image technology, applied in the field of image processing, can solve problems such as highlight dispersion and edge anomalies in high dynamic images, and achieve the effects of reducing edge anomalies, increasing the second fusion weight, and suppressing highlight dispersion.

Active Publication Date: 2019-08-20
ZHEJIANG DAHUA TECH CO LTD
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  • Application Information

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Problems solved by technology

[0005] The present application provides an image synthesis method, device and storage device, which can solve the problems of edge anomaly and highlight dispersion in the synthesized high dynamic image in the prior art

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  • Image synthesis method and device and storage device
  • Image synthesis method and device and storage device
  • Image synthesis method and device and storage device

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0022] The terms "first", "second", and "third" in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least t...

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Abstract

The invention discloses an image synthesis method and device, an image synthesis device and a storage device. The intra-frame method comprises the steps of obtaining a first image and a second image of the same scene; dividing the first image and the second image into a plurality of blocks according to the same mode; respectively calculating a first weight and a second weight of each first image block and a third weight of each second image block; calculating an exposure gain ratio by using the second weight and the third weight; calculating a first fusion weight of the first image block and asecond fusion weight of the second image block by using the first weight, the third weight and the exposure gain ratio; at least using the brightness information of the first image block to judge whether weight adjustment is carried out; if yes, improving the second fusion weight and reducing the first fusion weight; and synthesizing the first image and the second image according to the adjustedfirst fusion weight and the adjusted second fusion weight to obtain a synthesized image. In this way, the edge abnormality of the composite image can be reduced, and highlight dispersion can be inhibited.

Description

technical field [0001] The present application relates to the field of image processing, in particular to an image synthesis method, device and storage device. Background technique [0002] In the field of image processing, the dynamic range (Dynamic Range) is the ratio of the maximum brightness value of an image pixel to the minimum brightness value. A high-dynamic (High-Dynamic Range, HDR) image, also called a wide dynamic image, can provide more dynamic range and image details than a common image. [0003] With the development of computer and image processing technology, high dynamic image generation technology provides a good solution for capturing HDR images. By adjusting the exposure time of the camera, low dynamic range pictures of different exposures (brightness ranges) of the same scene are collected, and then through the high dynamic image generation algorithm, the pictures with different exposures are fused into a picture containing all brightness range informati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235H04N23/76
CPCH04N23/741H04N23/73G06T5/50G06T2207/10144G06T2207/20021G06T2207/20208H04N23/76G06T5/90
Inventor 钱勇郁军军方伟杨银昌
Owner ZHEJIANG DAHUA TECH CO LTD
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