Abstract: A structured light pattern comprising at least two sub-patterns in the direction of motion are projected onto an object during in-line inspection. Images of the object are captured for each sub-pattern. The sub-patterns are used to establish correspondence and to construct a profile using dense per pixel camera-projection correspondence.

Abstract: Disclosed herein are TV Camera based electro-optical sensors, providing affordable methods and apparatus for high speed determination of dimensions and other features of objects. Preferred embodiments utilize addressable line or pixel based cameras to effect triangulation based and other machine vision sensing of objects.

Abstract: A method for controlling a molten metal pouring operation is disclosed which works in the presence of unusual pouring conditions such as typically encountered in aluminum casting and utilizes a laser type sensor, for example a triangulation based light section device, to monitor differences between a reference surface and the molten metal in a mold.

Abstract: Disclosed herein are TV Camera based and other electro-optical sensors and systems, providing affordable methods and apparatus for high speed determination of dimensions and other features of objects. Particular embodiments capable of fast and reliable acquisition of features of moving objects such as boards and wood products are disclosed. Preferred embodiments utilize laser triangulation range detection with at least two cameras viewing the same laser spot or line projected on the object.

Abstract: This application is concerned with laser triangulation sensors for object dimension and position determination, and in particular, more effective measurement of object shapes and/or thickness using laser triangulation sensors having multiple projected laser beams and at least two linear or matrix array cameras to view the images of light reflected from the object due to the beams impinging on the object surface. Besides disclosure of the basic operation of “multi-point” sensors of this type, novel methods and apparatus are also disclosed to assure function of the device even with objects, such as lumber, having pronounced protrusions and depressions in their surface.

Abstract: Disclosed is a method for increasing production efficiency of mold lines where molten metal or other material requiring a cooling period is poured sequentially into moving molds. The invention particularly comprehends the tracking of individual molds and the individualized control of the cooling time of the molds from beginning to end of the line in the presence of random line stoppages and variant mold size.

Abstract: A method and apparatus measures cylinder head combustion chambers and provides inputs to machines which can perform operations to assure that all combustion chambers are at a correct volume. Also disclosed are devices for matching volumes of engine assemblies as well as precise machining of gears, turbine blades and other parts. Measurements are ideally made via electro-optical sensors, particularly triangulating types.