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Methods for depth estimation in laser speckle imaging
专利权人:
发明人:
Andrew Homyk,Jason Donald Thompson
申请号:
US14722096
公开号:
US09970955B1
申请日:
2015.05.26
申请国别(地区):
US
年份:
2018
代理人:
摘要:
Systems and methods are provided for detecting the depth, flow rate, and other properties of regions of blood flow in biological tissue by illuminating the biological tissue with beams of coherent light and detecting responsively emitted light. This includes detecting lights emitted from the tissue having a plurality of respective different exposure times. The relationship between the intensity of the received light and the exposure times is determined and used to determine the depth, flow velocity, or other properties of regions of flow within the biological tissue. This can include determining a spatial and/or temporal contrast of the received light intensity. Determining the depth of a region of flow can include comparing determined properties of light received from the tissue at two different polarizations. Determining the depth of a region of flow can include comparing determined properties of light received from the tissue at two different locations.
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