Multimodal laser speckle imaging

摘要

A system for multimodal laser speckle imaging may include a first light source positioned to emit laser light toward a target, a second light source positioned to emit light toward the target, a camera positioned to receive light scattered from the target, and a processor. The processor may be programmed to receive from the at least one camera at least one image of the target as illuminated by the laser, obtain a laser speckle contrast image of the target from the at least one image of the target as illuminated by the laser, receive from the at least one camera at least one image of the target as illuminated by the second light source, divide the laser speckle contrast image into subparts, and divide the at least one image of the target as illuminated by the second light source into identical subparts, determine whether each subpart includes a feature of a certain type by combining each subpart of the laser speckle contrast image with the at least one image of the target as illuminated by the second light source and comparing the combination with one or more criteria, and outputting the location and type of features detected in a subpart of the images.

主权项

1. A system for multimodal laser speckle imaging comprising:
a first light source positioned to emit coherent light toward a target, said coherent light having predetermined parameter(s), said parameter(s) selected from the parameter group consisting of wavelength, type of polarization, type of emission, timing of emission, pulse duration, and radiant power; a second light source positioned to emit either non coherent light or a second coherent light toward the target, said second coherent light having second coherent light parameter(s), said second coherent light parameter(s) selected from the parameter group consisting of wavelength, type of polarization, type of emission, timing of emission, pulse duration, and radiant power wherein said second coherent light parameter(s) is/are different than said first coherent light parameters in at least one aspect; wherein said coherent light and said non coherent light or second coherent light, each yield light scattered by said target; a camera positioned to receive said light scattered by said target thereby creating at least one image; and a processor programmed to: receive from the camera said at least one image of the target as illuminated by the coherent light; from the at least one image of the target as illuminated by the first light source, obtain a laser speckle contrast image of the target; receive from the camera at least one image of the target as illuminated by the second light source; divide the laser speckle contrast image into subparts, and divide the at least one image of the target as illuminated by the second light source into identical subparts; determine whether each subpart includes a feature of a certain type by combining each subpart of the laser speckle contrast image with the at least one image of the target as illuminated by the second light source and comparing the combination with one or more criteria; and outputting the location and type of features detected in a subpart of the images.