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arXiv · 1806.01496

Deep Image Compression via End-to-End Learning

Haojie Liu·Tong Chen·Qiu Shen·Tao Yue·Zhan Ma
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Abstract

We present a lossy image compression method based on deep convolutional neural networks (CNNs), which outperforms the existing BPG, WebP, JPEG2000 and JPEG as measured via multi-scale structural similarity (MS-SSIM), at the same bit rate. Currently, most of the CNNs based approaches train the network using a L2 loss between the reconstructions and the ground-truths in the pixel domain, which leads to over-smoothing results and visual quality degradation especially at a very low bit rate. Therefore, we improve the subjective quality with the combination of a perception loss and an adversarial loss additionally. To achieve better rate-distortion optimization (RDO), we also introduce an easy-to-hard transfer learning when adding quantization error and rate constraint. Finally, we evaluate our method on public Kodak and the Test Dataset P/M released by the Computer Vision Lab of ETH Zurich, resulting in averaged 7.81% and 19.1% BD-rate reduction over BPG, respectively.

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Haojie Liu, Tong Chen, Qiu Shen, Tao Yue, Zhan Ma. 2018-06-05. Deep Image Compression via End-to-End Learning. https://arxiv.org/abs/1806.01496

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