Journal of Applied Science and Engineering

Published by Tamkang University Press


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Jing Yu and Lu Zhao 

Lu Xun Academy of Fine Arts, Shenyang 110004, China


Received: December 10, 2023
Accepted: January 11, 2024
Publication Date: February 20, 2024

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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In the field of environmental art design, computer image processing technology is widely used. First, the application of computer image processing technology in space landscape design. Whether it is a city or a residential area, spatial landscape design will be carried out during the plane planning. In order to complete the design work, designers usually need to make drawings, and drawing design drawings manually will take a lot of time, so designers usually use computer image processing software to draw design drawings. The residential garden made by computer image processing software Landscape design map, not only the design effect is more real and intuitive, the operation is also very simple, greatly improving the design efficiency and quality. Low-light image has some demerits such as low contrast and strong noise. Traditional image enhancement methods cannot fully solve the above problems. In this paper, we propose a novel low-light image enhancement method based on a new U-net model. Firstly, the improved U-net model is used to extract the features of different levels in the raw images. A standardization layer is added after each convolutional layer. The original convolution module is perfected into an optimization module with the form of jump connection. Meanwhile, pyramid pooling module is added at the bottom of the encoder to better extract global information, forming an improved U-net model. Then the enhanced image with the modified U-net is fused, and finally the enhanced low-light image is obtained. Through rich experiments, the new U-net can better extract the features. The low-light image enhancement effect is better. The proposed method not only improves the brightness and contrast, makes the color more real, and it is more consistent with the characteristics of human vision system, but also the objective image quality indexes such as PSNR (exceeding 11.4) and SSIM are the optimal compared to other state-of-the-art enhancement algorithms.

Keywords: Low-light Image Enhancement, U-net, pyramid pooling, standardization layer, jump connection

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