Abstract: Disclosed is a method for improving the calibration of multiple projector systems in Spatial Augmented Reality systems where multiple projectors are used to project images directly onto objects of interest. The methods and system described herein improve the calibration of multiple projector systems in order to improve the alignment and clarity of projected images by reducing ghosting that can occur with poorly aligned projectors. The system uses a planar photodiode and the projector is used to project a plurality of projection regions, such as scan lines, across the planar photodetector and calculating the position based on weighting measurements by the measured light intensity and projected images in SAR.

Abstract: User input gloves and input methods are described that are well suited to provide input to computer modeling (eg CAD) and augmented reality (AR) systems, including wearable AR and spatial AR. Each glove comprises palm mounted ultrasonic transducers, accelerometers, finger based pinch inputs and a wireless communication module. The gloves can be used to measure distances over the natural range of distances that hands can be placed, as well as their orientation, with sufficient resolution to facilitate a range of gesture based input methods to be developed and utilized, including distance-based modeling by measurement. Further the gloves are light weight, allow fast input of modeling measurements, are easy to use, and reduce fatigue compared to existing glove based input systems. The user input gloves, and associated input techniques can be used to measure small and body sized objects using one or two hands, and large objects can be measured using single handed measurements.

Abstract: A Spatial Augmented Reality (SAR) system is described. The SAR system includes a SAR device, such as a computer, and a SAR platform such as a set of projectors and object tracking systems that are used for producing a SAR environment. The SAR device can include a loader for receiving and executing one or more SAR application modules and a SAR engine for receiving the input data and for interfacing between the SAR application modules and the output. The architecture of the SAR engine provides a SAR environment independent interface between the SAR application modules and the projectors and object trackers. The SAR engine is responsible for providing perspectively correct projected images in the SAR environment and performing coordinate transformations, and providing updates to application modules, as well as automating many common tasks.

Abstract: Disclosed is a method for improving the calibration of multiple projector systems in Spatial Augmented Reality systems where multiple projectors are used to project images directly onto objects of interest. The methods and system described herein improve the calibration of multiple projector systems in order to improve the alignment and clarity of projected images by reducing ghosting that can occur with poorly aligned projectors. The system uses a planar photodiode and the projector is used to project a plurality of projection regions, such as scan lines, across the planar photodetector and calculating the position based on weighting measurements by the measured light intensity and projected images in SAR.

Abstract: User input gloves and input methods are described that are well suited to provide input to computer modeling (eg CAD) and augmented reality (AR) systems, including wearable AR and spatial AR. Each glove comprises palm mounted ultrasonic transducers, accelerometers, finger based pinch inputs and a wireless communication module. The gloves can be used to measure distances over the natural range of distances that hands can be placed, as well as their orientation, with sufficient resolution to facilitate a range of gesture based input methods to be developed and utilized, including distance-based modeling by measurement. Further the gloves are light weight, allow fast input of modeling measurements, are easy to use, and reduce fatigue compared to existing glove based input systems. The user input gloves, and associated input techniques can be used to measure small and body sized objects using one or two hands, and large objects can be measured using single handed measurements.

Abstract: A displacement sensor element and a haptic sensor arrangement using two or more displacement sensor elements are provided. The arrangements can be used for real-time capture of the shape of haptic deformation of the sensor arrangement. Although examples described in detail herein are primarily directed to tactile applications, the sensor can be used in the machine, robotic and medical fields where a sensor of this type can usefully be applied where only machine or computer controlled robotic elements are interacting, particularly if the machines or robotic elements are being used in human like applications but other force measurement applications are possible.

Abstract: A displacement sensor element and a haptic sensor arrangement using two or more displacement sensor elements are provided. The arrangements can be used for real-time capture of the shape of haptic deformation of the sensor arrangement. Although examples described in detail herein are primarily directed to tactile applications, the sensor can be used in the machine, robotic and medical fields where a sensor of this type can usefully be applied where only machine or computer controlled robotic elements are interacting, particularly if the machines or robotic elements are being used in human like applications but other force measurement applications are possible.