Method, system and apparatus for ultra-high-resolution total body photography
AssigneeLumo Imaging LLC
InventorsDavood Tashayyod, Wei-Lun Huang
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Abstract
A method and apparatus for ultra-high resolution total body photography is provided. The method uses one or more depth cameras to do an initial scan of the subject. The scan captures depth information unique to the subject that will be used by scanning software to compute the flight path and angular position of all cameras during the scan. Given a 3D mesh of the subject obtained by the depth cameras, an Expectation-Minimization (EM) algorithm is used to assign points on the mesh uniquely to cameras and then solve for a focus distance for each camera given the associated point set.
Claims19
A method of maximizing a percentage of a skin surface of a subject in sharp focus comprising the steps of:
- 3d information capture of a patient's body to generate a three-dimensional model of the patient's body,
- setting two-dimensional camera parameters, including camera poses and/or focus distances for one or more two-dimensional cameras based on said three-dimensional model to maximize (i) a resolution and (ii) a percentage of an area of the skin surface that is in sharp focus in an image acquisition,
- scanning and photographing with said one or more two-dimensional cameras to produce a series of images,
- wherein setting the two-dimensional camera parameters includes assigning portions of the three-dimensional model to respective cameras and optimizing the camera parameters based on the assigned portions,
- wherein the skin surface area that is in sharp focus in the image acquisition includes that the said skin surface area is captured within the depth of field of at least one image from the said image acquisition.
An apparatus for imaging all skin surfaces of a subject's body comprising:
- at least one depth camera,
- a scan module with at least one high-resolution two-dimensional camera,
- robotics for posing the at least one high-resolution two-dimensional cameras, and a lighting system for illuminating the skin surfaces,
- and a processing unit configured to generate a three-dimensional model from the at least one depth camera and to determine two-dimensional camera parameters including camera poses and/or focus distances to maximize a percentage of the skin surface in sharp focus based on the three-dimensional model,
- wherein setting the two-dimensional camera parameters includes assigning portions of the three-dimensional model to respective cameras and optimizing the camera parameters based on the assigned portions,
- wherein the skin surface in sharp focus suggests that the said skin surface is captured within the depth of field of at least one image.
Dependencies are inferred from the claim text.