HDR image generation method and device
An image generation and image technology, applied in the field of image processing, can solve the problems of portrait brightness or light or dark contrast, portrait selection without the protection of the weight of three images, and achieve good results
Active Publication Date: 2020-11-27
XIAMEN MEITUZHIJIA TECH
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Problems solved by technology
[0002] HDR technology is to combine many pictures with different exposure levels into one high dynamic range picture. Since the three pictures are pictures with different exposure levels when taking pictures, the traditional algorithm does not choose a suitable exposure level for portraits for fusion. There is no special weight protection for the three images, so the composite HDR image may have a violation of the brightness or brightness of the portrait
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[0033] 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 only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0034] It should be noted that like numerals and let...
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Embodiments of the invention provide an HDR image generation method and apparatus. According to one embodiment, the HDR image generation method comprises the steps of obtaining multiple images of a portrait under at least three different exposure degrees, wherein the multiple images include a first image, a second image and a third image; converting the multiple images through a color space to obtain brightness components and chrominance components of the images; calculating a first mask value and a second mask value; according to the first mask value and the second mask value, performing fusion processing on the brightness components of the first image, the second image and the third image in a weighted summation manner; according to the first mask value and the second mask value, fusingthe chrominance components of the first image and the second image with the chrominance component of the third image; and combining the fused brightness component and chrominance component, and performing inverse conversion through the color space to obtain an HDR image.
Description
technical field [0001] The present invention relates to the field of image processing, in particular to a method and device for generating an HDR image. Background technique [0002] HDR technology is to combine many pictures with different exposure levels into one high dynamic range picture. Since the three pictures are pictures with different exposure levels when taking pictures, the traditional algorithm does not choose a suitable exposure level for portraits for fusion. At the same time, there is no special weight protection for the three images, so the composite HDR image may have a violation of the brightness or brightness of the portrait. Contents of the invention [0003] In view of this, an object of the embodiments of the present invention is to provide a method and device for generating an HDR image. [0004] An HDR image generation method provided by an embodiment of the present invention, the HDR image generation method includes: [0005] Acquiring multiple ...
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IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/009G06T5/50G06T2207/20208G06T2207/20221
Inventor 张长定张伟许清泉叶志鸿李骈臻
Owner XIAMEN MEITUZHIJIA TECH