Image Inpainting with Learnable Feature Imputation

• URL: http://arxiv.org/abs/2011.01077v1
• Date: Mon, 2 Nov 2020 16:05:32 GMT
• Title: Image Inpainting with Learnable Feature Imputation
• Authors: H{\aa}kon Hukkel{\aa}s, Frank Lindseth, Rudolf Mester
• Abstract summary: A regular convolution layer applying a filter in the same way over known and unknown areas causes visual artifacts in the inpainted image. We propose (layer-wise) feature imputation of the missing input values to a convolution. We present comparisons on CelebA-HQ and Places2 to current state-of-the-art to validate our model.
• Score: 8.293345261434943
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A regular convolution layer applying a filter in the same way over known and unknown areas causes visual artifacts in the inpainted image. Several studies address this issue with feature re-normalization on the output of the convolution. However, these models use a significant amount of learnable parameters for feature re-normalization, or assume a binary representation of the certainty of an output. We propose (layer-wise) feature imputation of the missing input values to a convolution. In contrast to learned feature re-normalization, our method is efficient and introduces a minimal number of parameters. Furthermore, we propose a revised gradient penalty for image inpainting, and a novel GAN architecture trained exclusively on adversarial loss. Our quantitative evaluation on the FDF dataset reflects that our revised gradient penalty and alternative convolution improves generated image quality significantly. We present comparisons on CelebA-HQ and Places2 to current state-of-the-art to validate our model.

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