2021 IEEE International Conference on Image Processing

19-22 September 2021 • Anchorage, Alaska, USA

Imaging Without Borders

2021 IEEE International Conference on Image Processing

19-22 September 2021 • Anchorage, Alaska, USA

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Paper Detail

Paper IDSS-IVC-DL.7
Paper Title Machine-Learning Based Secondary Transform for Improved Image Compression in JPEG2000
Authors Xinyue Li, Aous Naman, David Taubman, University of New South Wales, Australia
SessionSS-IVC-DL: Special Session: Optimized Image and Video Coding Using Deep Learning
LocationArea B
Session Time:Wednesday, 22 September, 08:00 - 09:30
Presentation Time:Wednesday, 22 September, 08:00 - 09:30
Presentation Poster
Topic Special Sessions: Optimized image and video coding schemes using deep learning
IEEE Xplore Open Preview  Click here to view in IEEE Xplore
Abstract This paper proposes a convolutional neural network (CNN) based secondary transform for not only improved coding efficiency in the JPEG2000 image compression format, but also to produce more appealing approximation sub-bands at different resolutions. The CNN in this work exploits information in detail sub-bands to predict some of the aliasing information in the corresponding approximation or low-pass sub-band; this reduction in aliasing, although not perfect, improves the compressibility of the "cleaned'' approximation sub-band. This process is repeated in subsequent wavelet decomposition levels to further improve coding efficiency. Experimental results show that, at high bit rates, the proposed network outperforms conventional JPEG2000 compression framework by up to 1.2 dB, especially for images with strong geometric flow.