Multi-exposure image fusion method of automatically removing ghosts

Abstract

The invention discloses a multi-exposure image fusion method of automatically removing ghosts. The multi-exposure image fusion method of automatically removing ghosts provides an effective method of moving object selection, for the phenomenon that ghosts exist in multi-exposure image fusion of a dynamic scene. The multi-exposure image fusion method of automatically removing ghosts includes the steps: selecting one input LDR image as a reference image, detecting the motion area by means of a method of bidirectional luminance mapping, calculating the motion weight, and automatically removing theghosts by means of a method of gradient domain weighted optimization so as to obtain a latent image; and after removing the ghosts, calculating the fusion weight by means of the fusion method based on blocks, performing exposure fusion, maintaining the detailed information and suppressing the abnormal value. The multi-exposure image fusion method of automatically removing ghosts can effectively maintain the details of a plurality of input images and remove the ghosts, can avoid complicated parameter setting and arbitrariness for a user to set the threshold, and has higher robustness for the ghost phenomenon in various scenes.

Description

technical field [0001] The invention belongs to the field of digital image processing, and relates to a multi-exposure image fusion method for automatically removing ghost images. Background technique [0002] The real-world dynamic range is high, and direct acquisition of high-dynamic-range images requires a professional-grade high-dynamic-range camera, and most imaging devices cannot capture such a high dynamic range. High Dynamic Range Imaging (HDRI) is an efficient method of acquiring high dynamic range images by acquiring a series of low dynamic range images (LDR) at different exposures and then synthesizing an HDR image. This method only needs ordinary imaging equipment to complete, so it is widely used. However, due to camera shake or object motion in the scene, the results obtained by these direct synthesis methods have ghosts orghosting artifacts. The anti-ghosting HDR synthesis technology can use multiple LDR images to synthesize HDR images, and at the same time ...

AI Technical Summary

Problems solved by technology

[0003] The current multi-exposure fusion method for ghosting is complex in calculation and takes a long time, which is not suitable for real-time applications. Inconsistencies in brightness around edges

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