JDEC: JPEG Decoding via Enhanced Continuous Cosine Coefficients

arXiv:2404.05558v1 Announce Type: cross
Abstract: We propose a practical approach to JPEG image decoding, utilizing a local implicit neural representation with continuous cosine formulation. The JPEG algorithm significantly quantizes discrete cosine transform (DCT) spectra to achieve a high compression rate, inevitably resulting in quality degradation while encoding an image. We have designed a continuous cosine spectrum estimator to address the quality degradation issue that restores the distorted spectrum. By leveraging local DCT formulations, our network has the privilege to exploit …

arxiv continuous cosine cs.cv decoding eess.iv type via