Fast hypercomplex continuous orthogonal moments

Qinghua Zhang, Fangjun Huang

Abstract: Highlights•The factors affecting the computation and reconstruction speed of HCOMs are analyzed.•A fast computation and reconstruction algorithm for HCOMs is proposed.•FHCOMs are used for multi-channel image zero-watermarking with noticeable speedup.•FHCOMs are used for multi-channel image watermarking with significant acceleration.