Zi-Chen Fan — accepted AI-conference papers

2024

A Novel Discrete Fractional Complex Hadamard Transform for Medical Image Encryption

ICASSP 2024accepted

This paper introduces a new discrete fractional complex Hadamard transform (FCHT) and its generalized form, the multiple-parameter FCHT (MFCHT). The MFCHT is applied to the medical image encryption. Both subjective observations and objective evaluations are conducted to validate the effectiveness of…

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2019

AUC Optimization for Deep Learning Based Voice Activity Detection

Zi-Chen Fan, Zhongxin Bai, Xiao-Lei Zhang, Susanto Rahardja, Jingdong Chen

ICASSP 2019accepted

Voice activity detection (VAD) based on deep neural networks (DNN) has demonstrated good performance in adverse acoustic environments. Current DNN based VAD optimizes a surrogate function, e.g. minimum cross-entropy or minimum squared error, at a given decision threshold. However, VAD usually works…

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