System and method for tissue analysis using remote PPG
AssigneeKoninklijke Philips N.V.
InventorsMarco Lai, Bernardus Hendrikus Wilhelmus Hendriks
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Abstract
A PPG imaging system and method is provided for processing 3D images to derive remote PPG signals. A surface mesh of a region of interest is created from each of a set of the 3D images. The surface meshes are matched to each other using mesh transformations thereby providing motion compensation. A remote PPG signal is then obtained from each of a set of mesh locations of the matched surface meshes, thereby to derive a set of PPG signals. A perfusion map and/or a PPG delay map may be obtained from the set of PPG signals.
Claims16
A processor for a photoplethysmography (PPG) imaging system, for processing 3D endoscope images to derive remote PPG signals, the processor adapted to:
- receive 3D endoscope images of a region of interest;
- construct a surface representation of the region of interest from each of a set of the 3D endoscope images;
- match the surface representations to each other using transformations thereby providing motion compensation and/or surface deformation compensation;
- and
- derive a remote PPG signal from each of a set of locations of the matched surface representations, thereby to derive a set of PPG signals.
A computer-implemented method for processing 3D endoscope images to derive remote photoplethysmography (PPG) signals, comprising:
- receiving 3D endoscope images of a region of interest;
- constructing a surface representation of the region of interest from each of a set of the 3D endoscope images;
- matching the surface representations to each other using transformations thereby providing motion compensation and/or surface deformation compensation;
- and
- deriving a remote PPG signal from each of a set of surface representation locations of the matched surface representations, thereby to derive a set of PPG signals.
A non-transitory computer-readable storage medium having stored a computer program comprising instructions to perform a method comprising:
- receiving 3D endoscope images of a region of interest;
- constructing a surface representation of the region of interest from each of a set of the 3D endoscope images;
- matching the surface representations to each other using transformations thereby providing motion compensation and/or surface deformation compensation;
- and
- deriving a remote photoplethysmography (PPG) signal from each of a set of surface representation locations of the matched surface representations, thereby to derive a set of PPG signals.
A processor configured to:
- receive 3D endoscope images of a region of interest;
- construct a surface representation of the region of interest from each of a set of the 3D endoscope images;
- match the surface representations to each other using transformations thereby providing motion compensation and/or surface deformation compensation;
- and
- derive a remote photoplethysmography (PPG) signal from each of a set of locations of the matched surface representations, thereby to derive a set of PPG signals.
Dependencies are inferred from the claim text.