Space-directional laser speckle contrast imaging to improve blood vessels visualization

To visualize blood vessels in Laser Speckle Imaging (LSI) is an important task since parameters such as blood pressure, relative blood flow and vessel size can be estimated through of them to then be used in medical diagnostics. LSI is the common method for visualizing blood vessels however, resulting images contain a high level of noise. For improving the visualization in LSI a contrast representation is computed in spatial or temporal way. Commonly, the spatial approach is used but it reduces the temporal resolution and vice versa. In this work, a space-directional approach that keeps a high resolution by computing contrast in an adaptive directional process while also deals with noise attenuation, is proposed.