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FD-LSCIC: Frequency Decomposition-Based Learned Screen Content Image Compression

delete2025-09-19
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PRE
AI
S
Shiqi Jiang
H
Hui Yuan
S
Shuai Li
H
Huanqiang Zeng
S
Sam Kwong
DOI:10.1109/TBC.2025.3609052delete
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摘要

摘要

En 中文
基于学习的图像压缩(LIC)方法已经在压缩自然场景(NS)图像方面超越了传统技术。然而,将这些方法直接应用于具有鲜明特征(如锐利边缘、重复模式、嵌入文本和图形)的屏幕内容(SC)图像时,结果并不理想。本文针对SC图像压缩中的三个关键挑战展开研究:学习紧凑的潜在特征、调整量化步长以及缺乏大型SC数据集。为克服这些挑战,我们提出了一种新型压缩方法,采用多频域两阶段八度残差块(MToRB)进行特征提取,级联三尺度特征融合残差块(CTSFRB)进行多尺度特征集成,以及多频域上下文交互模块(MFCIM)以降低频域相关性。此外,我们引入了一个自适应量化模块,用于学习各频域分量的缩放均匀噪声,从而实现对量化粒度的灵活控制。更进一步,我们构建了一个大型SC图像压缩数据集(SDU-SCICD10K),包含超过10,000张图像,涵盖基础SC图像、计算机渲染图像以及来自PC和移动平台混合的NS与SC图像。实验结果表明,我们的方法显著提升了SC图像压缩性能,在峰值信噪比(PSNR)和多尺度结构相似性(MS-SSIM)指标上均优于传统标准及当前最优的学习型方法。源代码将在之后开放于https://github.com/SunshineSki/Screen-content-image-dataset/tree/main/SDU-SCICD10K。
Keyword:
Screen content
image compression
multi-frequency
feature decomposition
adaptive quantization

期刊

IEEE Transactions on Broadcasting 封面图
IEEE Transactions on Broadcasting
IF:
4.8
论文数:
2.1K
被引数:
3.0K

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H
huaqiao university
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1.1W
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被引数: 131
L
Lingnan University
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1.0K
论文数: 1.4K
被引数: 202
S
shandong university
学者数:
9.5W
论文数: 6.4W
被引数: 94
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