L.b.p. Partnership

P&w/lbp Master Partnership

Textile/clothing Technology Corporation

John R Grindon

Michelle Demers

Jeffery Hurley

Richard Wulpern

Systems methods and computer program products are provided for obtaining a three-dimensional data set that is representative of a surface of a three-dimensional object. A grating pattern, having a sinusoidally varying intensity pattern, is projected onto the surface of an object. The projected grating pattern is shifted a number of times and two-dimensional deformed grating images of an area segment of the object surface are captured and stored. A two-dimensional array of optical phase values is then created. Optical phase values in the two-dimensional array are then used to generate a plurality of three-dimensional data points that represent respective points on the surface of the object. Each three-dimensional data point is found by locating, for each pixel in the detector array of pixels, a point on the surface of the object wherein a ray from a respective pixel passing through a nodal point of a detector lens is intersected by a plane of constant phase from the projected first grating pattern passing through a nodal point of a projector lens.

Systems, methods and computer program for measuring the surface contour of an object

Enclosure for a studio

A projector for selectively projecting patterns of light onto a remote object, one use of which is in conjunction with a system to establish measurements of the surface characteristics of the object, the projector including at least one light source and associated lens assembly mounted to project light onto the remote object, and a rotatable mask member having two or more segments, each segment a distinctive optical pattern, which mask can be rotated as to position a selected one of the segments between the light source and the projection lens assembly whereby when light is directed through the selected segment the light projected onto the remote object will be modified by the optical pattern on that segment. The projector may have two or more spaced light sources and associated projection lens assemblies, and the mark rotatable therebetween to produce distinctively different patterns of light impinging on the remote object when the respective light sources are illuminated, the patterns of light projected on the object when a selected mask segment is positioned in the path of one of the light sources when it is illuminated being angularly related to the pattern of images projected on the object when that same segment is positioned between a second light source and second lens and that second light source is illuminated.

Means for projecting patterns of light

A system for producing data to represent the three-dimensional shape of a surface including a projector for projecting patterns onto the surface. A sensor for producing representations of selected imaged patterns as projected onto the surface, and a device containing data that represents the relative positions of the projector and the sensor for processing data produced by sensor to generate output data that is representative of the shape of the surface.

Growing community of inventors

Hazelwood, MO, United States of America

John R Grindon