Method and device for color combination in high-dynamic-range image combination

A high dynamic range, image synthesis technology, applied in the field of image synthesis, can solve problems such as color deviation and color distortion

Active Publication Date: 2017-01-11
BEIJING LUSTER LIGHTTECH
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  • Application Information

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a method and device for color synthesis in high dynamic range image synthesis, so as to s

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  • Method and device for color combination in high-dynamic-range image combination

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Embodiment Construction

[0087] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0088] The present invention provides a method and device for color synthesis in high dynamic range image synthesis. Using the method provided by the invention, the color in the target LE image and the target HE image used to synthesize the target high dynamic range image is reduced. The influence of the color difference value of the un...

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Abstract

The invention discloses a method and a device for color combination in high-dynamic-range image combination. The method comprises the steps of respectively determining a first color difference adjusting function and a second color difference adjusting function according to brightness value distribution of pixels in an objective LE image and an objective HE image; adjusting the color difference values of the objective LE image and the objective HE image according to the first color difference adjusting function and the second color difference adjusting function, combining the intermediate color difference value of an intermediate high-dynamic-range image according to the adjusted color difference value; obtaining the combined brightness value of an objective high-dynamic-range image; determining a saturation adjusting factor according to the brightness values of the pixels in the objective LE image and the objective HE image, the combined brightness value of the objective high-dynamic-range image, the first color difference adjusting function and the second color difference adjusting function; and adjusting the intermediate color difference value of the intermediate high-dynamic-range image by means of the saturation adjusting factor, thereby generating the combined color difference value of the objective high-dynamic-range image. The method for color combination can prevent color distortion.

Description

technical field [0001] The invention relates to the technical field of image synthesis, in particular to a method and device for color synthesis in high dynamic range image synthesis. Background technique [0002] For the photosensitive element, the dynamic range refers to the range from "darkest" to "brightest" contained in the image generated by the photosensitive element after exposure. The larger the dynamic range, the richer the image can express. The included color space Also wider. For actual scenes, the dynamic range indicates the range from "darkest" to "brightest" contained in the scene. The larger the dynamic range, the richer the layers of pictures in the scene and the wider the color space contained. [0003] If the dynamic range of the photosensitive element is larger than the dynamic range of the actual scene to be photographed, in the image generated after shooting the actual scene with the photosensitive element, the level of the scene is more prominent and...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/50H04N5/235H04N5/355
CPCG06T5/009G06T5/50G06T2207/20221G06T2207/20208H04N23/73H04N25/57
Inventor 杨艺刘淼姚毅
Owner BEIJING LUSTER LIGHTTECH
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