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A Stereo High Dynamic Range Image Synthesis Method Based on Exposure Transformation

A technology with high dynamic range and synthesis method, which is applied in image enhancement, image communication, image data processing, etc., can solve the problems of high dependence on post-processing technology and achieve the effect of improving quality

Active Publication Date: 2020-08-18
NINGBO UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Although this method has certain advantages over other existing methods in terms of subjective evaluation and objective evaluation indicators, it relies heavily on post-processing technology

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  • A Stereo High Dynamic Range Image Synthesis Method Based on Exposure Transformation
  • A Stereo High Dynamic Range Image Synthesis Method Based on Exposure Transformation
  • A Stereo High Dynamic Range Image Synthesis Method Based on Exposure Transformation

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Embodiment Construction

[0027] The invention will be further described below with reference to the accompanying drawings and in combination with specific embodiments, so that those skilled in the art can implement it by referring to the description, and the protection scope of the present invention is not limited to the specific embodiments.

[0028] The technical scheme adopted in the present invention is a method for synthesizing stereoscopic high dynamic range images based on exposure transformation, comprising the following steps:

[0029] (1), the multi-exposure image sequence composed of low-exposure viewpoint, normal-exposure viewpoint 1, normal-exposure viewpoint 2 and high-exposure viewpoint, and the disparity map of low-exposure viewpoint and high-exposure viewpoint are taken as the input of the system ;

[0030] (2) Viewpoint rendering and repairing part: firstly, assume normal exposure viewpoint 1 and normal exposure viewpoint 2 are left and right viewpoints respectively, both of which ar...

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Abstract

The invention relates to a stereoscopic high dynamic range image synthesis method based on exposure transformation, which effectively utilizes the information of the exposure transformation image in the synthesis process. Firstly, the d-buffer strategy is used to draw the auxiliary viewpoint image with low / high exposure to the main viewpoint with normal exposure, and a reliability detection method based on exposure transformation is proposed to remove inaccurate pixels; then, in order to obtain high To improve the quality of multi-exposure images, an information restoration method based on exposure transformation is proposed, which mainly uses the exposure transformation image to perform pixel filling, edge repair, and image smoothing on the drawn image; and then synthesizes the main viewpoint HDR image based on the restored multi-exposure images. The method above is applied to both left and right viewpoints to synthesize left and right viewpoint HDR images, thereby realizing stereoscopic HDR imaging.

Description

technical field [0001] The invention relates to the technical field of stereoscopic high dynamic range image synthesis, in particular to a method for synthesizing stereoscopic high dynamic range images based on exposure transformation. Background technique [0002] High Dynamic Range (HDR) images have the advantages of wide dynamic range, high contrast, and rich colors, and are being widely used in many fields such as medicine, aviation, and intelligent manufacturing. However, due to the limitation of imaging equipment, many existing HDR images are basically obtained through software synthesis. Therefore, in order to obtain HDR images that are more in line with real scenes, more and more attention has been paid to the technology of HDR imaging. [0003] At present, using multiple exposure image sequences to synthesize HDR images has become the mainstream method of HDR imaging. This type of method uses the superposition of the dynamic range of multiple exposure images to ob...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/265G06T5/00
CPCH04N5/265H04N23/743H04N23/70H04N23/741G06T5/90
Inventor 郁梅谢登梅潘志勇蒋刚毅
Owner NINGBO UNIV