Title: Digital media image colour enhancement processing method based on multi-scale Retinex

Authors: Qiushi Li; Boya Dong; Xin Meng

Addresses: Department of Experimental Art, LuXun Academy of Fine Arts, Shenyang, 110004, China ' Department of Experimental Art, LuXun Academy of Fine Arts, Shenyang, 110004, China ' Department of Experimental Art, LuXun Academy of Fine Arts, Shenyang, 110004, China

Abstract: Aiming at the problems of poor enhancement effect and large colour error in digital media image colour enhancement, a method of digital media image colour enhancement based on multi-scale Retinex is proposed. First, build and HSI colour space model to analyse digital media image colour space. Then, wavelet threshold method is used to deal with colour space noise. Finally, multi-scale Retinex is introduced to optimise Retinex through Gaussian filtering and weighted fusion to achieve colour enhancement of digital media images. The experimental results show that the proposed method can effectively improve the colour enhancement effect of digital media images, and the error is less than 0.15%, and the time cost is 0.20 s. This method effectively improves the colour enhancement effect.

Keywords: multi-scale Retinex; digital media image; colour enhancement; HSI colour space model; wavelet coefficients; hard threshold function.

DOI: 10.1504/IJCISTUDIES.2024.144045

International Journal of Computational Intelligence Studies, 2024 Vol.13 No.1/2, pp.23 - 39

Received: 28 Nov 2022
Accepted: 26 Nov 2023
Published online: 22 Jan 2025 *

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