Speckle 2 Speckle contrasts Algorithms 1 All optical 1 Beating heart 1 Camera-based 1 Cameras 1 Cardiac imaging 1 Contact vibration 1 Contrast imaging 1 Diagnostic Imaging 1 Dynamic speckle 1 Frequency estimation 1 Heart 1 Humans 1 Neovascularization, Pathologic 1 Non-contact 1 Non-contact vibration detection 1 Optical flows 1 Optical speckles 1 Photoacoustic signals 1 Quasi-periodic motion 1 Signal detection 1 Signal to noise ratio 1 Spatial evolution 1 Speckle contrast imaging 1 Spectrum analysis 1 Temporal evolution 1 Vasculature 1 Vibration analysis 1