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Feifan Cai

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Proceedings Article | 21 June 2024 Paper

Reference-based attention mechanism and region segmentation line art colorization

Wenqiang Ye, Feifan Cai, Youdong Ding

Proceedings Volume 13167, 131671K (2024) https://doi.org/10.1117/12.3029682

KEYWORDS: Color image processing, Color, Image segmentation, Feature extraction, Semantics

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Automatic line art colorization has been largely adapted to the anime industry since it can improve animation production. Reference-based method provides a more convenient and intuitive method but now is equipped with a challenge in aspects of color match and semantic consistency. In this paper, we propose an GAN-based line art colorization architecture. We introduce an attention mechanism module which fuses and merges coordinate attention and stop-gradient attention for improving encoder's ability of key region perception and feature extraction. To alleviate color overflow, we design a segmentation branch to control the region correspondence between the line art and the reference image. Multiple experiments unequivocally illustrate that our method excels over other state-of-the-art reference-based techniques in animation line art colorization task.

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