Systems and methods for endoscopic image depth estimation
AssigneeVerathon Inc.
InventorRiley Cambon
Life of this patent
Estimating the term…
Abstract
An endoscopic camera captures an image of a scene that is illuminated by the light source. A processor performs image linearization for the image based on a stored gamma curve, estimates tissue colors in the image based on stored tissue color estimation data, and corrects for incident light intensity based on the estimated tissue color. The processor also corrects for light beam pattern intensity, based on a calibration image, to obtain corrected light intensity for the image. The processor generates a depth map for the image based on the corrected light intensity and provides a measurement of an object in the image based on the depth map.
Claims20
A system comprising:
- an endoscope including a camera module and a light source module, and
- a console including a processor to:
- receive, from the endoscope, an image of a scene, obtained by the camera module, that is illuminated by the light source;
- perform image linearization for the image based on a stored gamma curve;
- estimate tissue colors in the image based on stored tissue color estimation data;
- correct the image for incident light intensity based on the estimated tissue color;
- correct the image for light beam pattern intensity, based on a calibration image, to obtain corrected light intensity for the image;
- generate a depth map for the image based on the corrected light intensity;
- and
- provide a measurement of an object in the image based on the depth map.
A method, comprising:
- receiving, from an endoscopic camera, an image of a scene illuminated by the light source;
- performing image linearization for the image based on a stored gamma curve;
- estimating tissue colors in the image based on stored tissue color estimation data;
- correcting the image for incident light intensity based on the estimated tissue color;
- correcting the image for light beam pattern intensity, based on a calibration image, to obtain corrected light intensity for the image;
- generating a depth map for the image based on the corrected light intensity;
- and
- providing a measurement of an object in the image based on the depth map.
A non-transitory computer-readable storage medium storing instructions executable by a processor of a network device, wherein the instructions are configured to:
- receive, from an endoscopic camera, an image of a scene illuminated by the light source;
- perform image linearization for the image based on a stored gamma curve;
- estimate tissue colors in the image based on stored tissue color estimation data;
- correct the image for incident light intensity based on the estimated tissue color;
- correct the image for light beam pattern intensity, based on a calibration image, to obtain corrected light intensity for the image;
- generate a depth map for the image based on the corrected light intensity;
- and
- provide a measurement of an object in the image based on the depth map.
Dependencies are inferred from the claim text.