Image compression, as one of the fundamental low-level image processing tasks, is very essential for computer vision. Conventional image compression methods tend to obtain compressed images by minimizing their appearance discrepancy with the corresponding original images, but pay little attention to their efficacy in downstream perception tasks, e.g., image recognition and object detection. In contrast, this paper aims to produce compressed images by pursuing both appearance and perception consistency. Based on the encoder-decoder framework, we propose using a pre-trained CNN to extract features of original and compressed images. In addition, the maximum mean discrepancy (MMD) is employed to minimize the difference between feature distributions. The resulting compression network can generate images with high image quality and preserve the consistent perception in the feature domain, so that these images can be well recognized by pre-trained machine learning models. Experiments on benchmarks demonstrate the superiority of the proposed algorithm over comparison methods.

本文提出了一种名为 Discernible Image Compression（DIC）的方法，旨在通过追求外观和感知一致性来生成高质量的压缩图像，并利用经过预训练的CNN提取原始和压缩图像的特征，同时最小化特征分布之间的差异，实验结果表明使用该方法压缩的图像可被下游的视觉识别和检测模型良好识别。

可辨识图像压缩