Devices and methods for speckle motion artifact detection and compensation in medical imaging
AssigneeNovadaq Technologies ULC
InventorsMarc ANDRÉ, Arthur E. BAILEY
Life of this patent
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Abstract
A device for providing reference information in laser speckle medical imaging of tissue of a subject can include a support that includes a marker for image recognition and a speckle target region that is nontransparent to light in a first illumination wavelength range and that generates a speckle pattern when illuminated with light in the first wavelength range. The support can be configured to be attachable to tissue of the subject.
Claims20
A method for compensating for speckle motion artifacts in medical laser speckle imaging of a target tissue area, comprising:
- providing a series of laser speckle images of the target, the series of images acquired by a laser speckle imaging device;
- calculating a measure of relative motion between a first image in the series and a second image in the series;
- and
- correcting the image data of the second image to compensate for speckle motion artifacts by scaling the image data by a scaling factor and by subtracting an offset value from the image data, wherein the scaling factor and the offset value are based on the calculated measure of relative motion.
A system for compensating for speckle motion artifacts in medical laser speckle imaging of a target tissue area, comprising one or more processors, memory, and one or more programs stored in the memory for execution by the one or more processors for:
- receiving a series of laser speckle images of the target, the series of images acquired by a laser speckle imaging device;
- calculating a measure of relative motion between a first image in the series and a second image in the series;
- and
- correcting the image data of the second image to compensate for speckle motion artifacts by scaling the image data by a scaling factor and by subtracting an offset value from the image data, wherein the scaling factor and the offset value are based on the calculated measure of relative motion.
Dependencies are inferred from the claim text.