Pixel-Learnable 3DLUT With Saturation-Aware Compensation for Image Enhancement

IF 8.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS
Jing Liu;Qingying Li;Xiongkuo Min;Yuting Su;Guangtao Zhai;Xiaokang Yang
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Abstract

The 3D Lookup Table (3DLUT)-based methods are gaining popularity due to their satisfactory and stable performance in achieving automatic and adaptive real time image enhancement. In this paper, we present a new solution to the intractability in handling continuous color transformations of 3DLUT due to the lookup via three independent color channel coordinates in RGB space. Inspired by the inherent merits of the HSV color space, we separately enhance image intensity and color composition. The Transformer-based Pixel-Learnable 3D Lookup Table is proposed to undermine contouring artifacts, which enhances images in a pixel-wise manner with non-local information to emphasize the diverse spatially variant context. In addition, noticing the underestimation of composition color component, we develop the Saturation-Aware Compensation (SAC) module to enhance the under-saturated region determined by an adaptive SA map with Saturation-Interaction block, achieving well balance between preserving details and color rendition. Our approach can be applied to image retouching and tone mapping tasks with fairly good generality, especially in restoring localized regions with weak visibility. The performance in both theoretical analysis and comparative experiments manifests that the proposed solution is effective and robust.
具有饱和度补偿功能的像素可学习 3DLUT 图像增强技术
基于三维查找表(3DLUT)的方法在实现自动和自适应实时图像增强方面具有令人满意的稳定性能,因而越来越受欢迎。在本文中,我们提出了一种新的解决方案,以解决 3DLUT 由于通过 RGB 空间中的三个独立颜色通道坐标进行查找而导致的处理连续颜色变换的困难性。受 HSV 色彩空间固有优点的启发,我们分别增强了图像的强度和色彩构成。为了消除轮廓伪影,我们提出了基于变换器的像素可学习三维查找表,它利用非本地信息以像素方式增强图像,以强调多样化的空间变化背景。此外,我们还注意到成分色彩部分被低估,因此开发了饱和度感知补偿(SAC)模块,以增强由饱和度-交互块自适应 SA 映射确定的饱和度不足区域,从而在保留细节和色彩呈现之间实现良好平衡。我们的方法可用于图像修饰和色调映射任务,具有相当好的通用性,尤其是在恢复能见度较弱的局部区域时。理论分析和对比实验的结果表明,所提出的解决方案既有效又稳健。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Transactions on Multimedia
IEEE Transactions on Multimedia 工程技术-电信学
CiteScore
11.70
自引率
11.00%
发文量
576
审稿时长
5.5 months
期刊介绍: The IEEE Transactions on Multimedia delves into diverse aspects of multimedia technology and applications, covering circuits, networking, signal processing, systems, software, and systems integration. The scope aligns with the Fields of Interest of the sponsors, ensuring a comprehensive exploration of research in multimedia.
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