Device and method for determining the three-dimensional geometry of an individual object
AssigneeTwinport360 Holding B.V.
InventorsRaymond Wentink, Roy Joling
Life of this patent
Estimating the term…
Abstract
A device for determining the three-dimensional geometry of an individual object includes a supplier, a line projection, an image capturing system, and a processing unit connected to the first image capturing system for receiving the first signal. The processing unit is configured to determine, for each image from the image capturing system, a two-dimensional representation of a slice of the object, and determine, using the representation of each slice, a three-dimensional representation of the object. A method of determining a three-dimensional representation of an individual object includes the aforementioned steps performed by the processing unit.
Claims21
A device for determining the three-dimensional geometry of an individual object, the device comprising:
- a conveyor configured to individually supply the object and to move it along a trajectory through a predetermined space;
- a line projector configured to project a line along exactly one predetermined plane, wherein the exactly one plane intersects the trajectory in said space, so that when the object is at a position along the trajectory at which at least part of the object intersects the exactly one plane, a contour of a slice of the object co-planar to the exactly one plane is at least partly illuminated by the line;
- a first image capturing system configured to repeatedly capture first images in said space as the object moves through the exactly one plane, the first images thereby including at least part of the illuminated contour, and for providing a first signal comprising image data of the first images;
- and
- a processing unit connected to the first image capturing system for receiving the first signal,
- wherein the processing unit is configured to:
- determine, for each first image, a two-dimensional representation of the slice based on said first signal and geometry information relating to the exactly one plane;
- and
- determine, using the representation of each slice, a three-dimensional representation of the object;
- wherein the first image capturing system comprises a first set of cameras, disposed on a first side at a distance before the exactly one plane, and
- wherein the first image capturing system comprises a second set of cameras, disposed on a second side at a distance after the exactly one plane, the second side being opposite the first side with respect to the exactly one plane.
A method of determining a three-dimensional representation of an individual object, the method comprising the steps of:
- individually supplying an object, and moving it along a trajectory through a predetermined space;
- projecting a line along exactly one predetermined plane, the exactly one plane intersecting the trajectory in said space, so that when the object is at a position along the trajectory at which at least part of the object intersects the exactly one plane, a contour of a slice of the object co-planar to the exactly one plane is at least partly illuminated by the line;
- repeatedly capturing images of at least part of the illuminated contour as the object moves through the exactly one plane using sets of cameras on opposing sides at a distance before and after the exactly one plane;
- for each captured image, determining a two-dimensional representation of the slice using geometry information relating to the exactly one plane;
- and
- determining, using the representation of each slice, a three-dimensional representation of the object;
- wherein optionally, the method further comprises:
- determining, using the representation of the object, a value corresponding to the volume and/or length and/or width of the object.
Dependencies are inferred from the claim text.