Papers › Unified Signal Compression Using a GAN with Iterative Latent Representation Optimization

Unified Signal Compression Using a GAN with Iterative Latent Representation Optimization

23 Sep 2021arXiv:2109.11168archive 2025-07-28

Bowen Liu, Changwoo Lee, Ang Cao, Hun-Seok Kim

We propose a unified signal compression framework that uses a generative adversarial network (GAN) to compress heterogeneous signals. The compressed signal is represented as a latent vector and fed into a generator network that is trained to produce high quality realistic signals that minimize a target objective function. To efficiently quantize the compressed signal, non-uniformly quantized optimal latent vectors are identified by iterative back-propagation with alternating direction method of multipliers (ADMM) optimization performed for each iteration. The performance of the proposed signal compression method is assessed using multiple metrics including PSNR and MS-SSIM for image compression and also PESR, Kaldi, LSTM, and MLP performance for speech compression. Test results show that the proposed work outperforms recent state-of-the-art hand-crafted and deep learning-based signal compression methods.

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Code

bowenl0218/bpgan-signal-compression officialmentioned in paperpytorchGPL-3.0 report

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Image CompressionMS-SSIMSSIM

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Methods

LSTMSigmoid ActivationTanh ActivationTest

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