Abstract: A method of forming a combined feature boundary based on boundaries of first and second overlapping features includes dividing the boundaries of the first and second overlapping features into line segments of known shape, identifying crossing points formed by the line segments, calculating parametric coordinates of the crossing points, and determining a sequence of crossing point evaluation based on the parametric coordinates. The method also includes calculating first and second cross products based on the line segments forming first and second crossing points in the determined sequence, and choosing first and second paths of the combined feature boundary according to mathematical signs of the cross products, wherein the combined feature boundary includes the first and second crossing points and portions of at least one of the first and second feature boundaries defining the first and second paths.

Abstract: A method of forming a combined feature boundary based on boundaries of first and second overlapping features includes dividing the boundaries of the first and second overlapping features into line segments of known shape, identifying crossing points formed by the line segments, calculating parametric coordinates of the crossing points, and determining a sequence of crossing point evaluation based on the parametric coordinates. The method also includes calculating first and second cross products based on the line segments forming first and second crossing points in the determined sequence, and choosing first and second paths of the combined feature boundary according to mathematical signs of the cross products, wherein the combined feature boundary includes the first and second crossing points and portions of at least one of the first and second feature boundaries defining the first and second paths.

Abstract: A method of forming a combined feature boundary based on boundaries of first and second overlapping features includes dividing the boundaries of the first and second overlapping features into line segments of known shape, identifying crossing points formed by the line segments, calculating parametric coordinates of the crossing points, and determining a sequence of crossing point evaluation based on the parametric coordinates. The method also includes calculating a first cross product based on the line segments forming a first crossing point in the determined sequence, and choosing a first path of the combined feature boundary according to a mathematical sign of the first cross product, the first path extending from the first crossing point to the second crossing point in the determined sequence.

Abstract: A method of forming a combined feature boundary based on boundaries of first and second overlapping features includes dividing the boundaries of the first and second overlapping features into line segments of known shape, identifying crossing points formed by the line segments, calculating parametric coordinates of the crossing points, and determining a sequence of crossing point evaluation based on the parametric coordinates. The method also includes calculating a first cross product based on the line segments forming a first crossing point in the determined sequence, and choosing a first path of the combined feature boundary according to a mathematical sign of the first cross product, the first path extending from the first crossing point to the second crossing point in the determined sequence.

Abstract: Apparatus for sequentially imaging an object while maintaining focus includes a camera having a selectable image capture mode, an objective lens optically coupled to the camera, an optical range sensor operating through the objective lens, a strobe illuminator, and a controller coupled to the camera, the illuminator and the range sensor sequentially activating and deactivating the range sensor, selecting and deselecting the image capture mode only when the range sensor is deactivated, and activating and deactivating the strobe illuminator only when the image capture mode is active.

Abstract: A high speed, high accuracy, three-dimensional inspection system for ball and pin grid assemblies. The system uses a three-dimensional scanner to gather data which is analyzed to yield height position measurements along with overall packaged dimensions. The grid array to be scanned is placed upon a fixture above a motion control table. The motion control system is controlled by a personal computer and has a high resolution. The parts can be presented in single trays, tray stackers, tubes or other carriers. Array packages are handled either manually or automatically. In the manual mode, arrays are loaded onto the fixture by hand before activated the image processing hardware. Alternatively, an automatic pick and place module may be used to load the grid array packages on the fixture. The fixture consists of a plate with a cavity the size of the grid array package being inspected. The size of the cavity can be adjusted to fit different size parts.

Abstract: A high speed, high accuracy, three-dimensional inspection system for ball and pin grid assemblies. The system uses a three-dimensional scanner to gather data which is analyzed to yield height position measurements along with overall packaged dimensions. The grid array to be scanned is placed upon a fixture above a motion control table. The motion control system is controlled by a personal computer and has a high resolution. The parts can be presented in single trays, tray stackers, tubes or other carriers. Array packages are handled either manually or automatically. In the manual mode, arrays are loaded onto the fixture by hand before activated the image processing hardware. Alternatively, an automatic pick and place module may be used to load the grid array packages on the fixture. The fixture consists of a plate with a cavity the size of the grid array package being inspected. The size of the cavity can be adjusted to fit different size parts.