Wedge two-layer medium ultrasonic plane wave compounding imaging based on sign multiply coherence factor combined with delay multiply and sum beamforming

Improving photoacoustic imaging in low signal-to-noise ratio by using spatial and polarity coherence

“…Besides, the polarity can still be retained even when the amplitude of signals is distorted. Benefiting from these advantages, SCF exhibits better performance in suppressing the sidelobe, noise, and especially the grating lobe for US imaging [29] , [30] .…”