HDR image generation method and device, readable storage medium and terminal equipment

Abstract

The invention belongs to the technical field of image processing, and particularly relates to an HDR image generation method and device, a computer readable storage medium and terminal equipment. Themethod comprises the steps of firstly obtaining a to-be-processed single-frame original image, then processing the original image by using a preset deep learning network, and generating an HDR image corresponding to the original image; wherein the deep learning network adopts a network structure combining a lightweight Unet network and a residual error module, and the deep learning network is obtained by training based on a preset training sample set. The lightweight Unet network further reduces the number of layers of a lower sampling layer, the number of layers of an upper sampling layer andthe number of channels of a feature map, greatly simplifies the network structure, and better recovers detail information of a highlight area due to the fact that a residual error module can effectively extract high-frequency information in an original image, thereby improving the image quality. HDR image generation effect is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to an HDR image generation method, device, computer-readable storage medium and terminal equipment. Background technique [0002] High-Dynamic Range (HDR) images can provide more dynamic range and image details than ordinary images. In the prior art, HDR image generation techniques mainly include two methods: multi-frame synthesis and single-frame generation. Among them, the method of multi-frame synthesis needs to take multiple images of the same scene at different exposure times (the mainstream uses 3 times or 5 exposures), and then fuse these images to get the final HDR image. This method has the following two disadvantages: first, because it needs to take multiple images of the same scene, the shooting process takes a long time; second, it is often difficult for the user to keep the mobile phone stable during the entire shooting process. If there is any ji...

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Problems solved by technology

[0003] In view of this, an embodiment of the present invention provides an HDR image generation method, device, computer-readable storage medium, and terminal equipment to solve the problem that the existing single-frame HDR image generation method takes a long time, consumes large resources and has an poor problem

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