Ultra-high dynamic range image generation method, computer device, and storage medium

A high dynamic range and dynamic range technology, applied in the field of data processing, can solve problems such as ghosting, long time-consuming multiple exposures of a single camera, and unclear visibility in dark places

Inactive Publication Date: 2018-12-25
叶涵
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Problems solved by technology

Combining high dynamic range imaging with multiple exposures by a single camera is currently widely used, but there are still the following problems: multiple exposures by a single camera take a long time, and the total exposure time is the sum of multiple exposure imaging times , so it is only suitable for static scene shooting; for dynamic scene shooting, due to...

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  • Ultra-high dynamic range image generation method, computer device, and storage medium
  • Ultra-high dynamic range image generation method, computer device, and storage medium
  • Ultra-high dynamic range image generation method, computer device, and storage medium

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[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] The ultra-high dynamic range image generation method provided by the embodiment of the present invention obtains a group of images to be processed with different exposures; restores the camera response function according to the images to be processed, and combines the images to be processed into High dynamic range irradiance map; based on the tone mapping algorithm, the high dynamic range irradiance map is processed, and an ultra-high dynamic range image is output; the obtained ultra-high dynamic range image is clear, there is no focus in bright places, and dark places cannot see Clear, focu...

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Abstract

The invention is applicable to the technical field of data processing and provides a method for generating ultra-high dynamic range images. The method comprises the following steps: obtaining a groupof images to be processed with different exposure; according to the image to be processed, the camera response function is restored, and the image to be processed is combined into a high dynamic rangeirradiance map by convex combination; the high dynamic range irradiance image is processed based on the hue mapping algorithm, and the ultra-high dynamic range image is outputted. The obtained ultra-high dynamic range image is clear, and there is no situations such as bright spot focusing, not clear dark spot, dark spot focusing, not clear bright spot.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a method for generating an ultra-high dynamic range image, a computer device and a storage medium. Background technique [0002] The imaging resolution and dynamic range of digital imaging equipment are two main indicators to measure the imaging quality of imaging equipment. The imaging resolution of digital imaging equipment has been developed rapidly in recent decades, but the improvement of dynamic range has been very small. As a result, it is difficult to capture imaging details in scenes with backlighting or large changes in light. [0003] The dynamic range of single-exposure imaging of current digital imaging equipment is much lower than the visible dynamic range of human vision (including professional-grade SLR cameras, professional monitoring equipment, personal handheld terminals, etc.). Due to the limited dynamic range of images that can be obtaine...

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Application Information

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IPC IPC(8): H04N5/235H04N5/243H04N5/232
CPCH04N23/951H04N23/741H04N23/76
Inventor 杨智昌林文垣
Owner 叶涵
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