Abstract: The claimed subject matter includes techniques for processing gestures. An example method includes receiving a gesture from an application. The gesture includes one or more primitives from a language that is domain-specific to gestures. The method also further includes receiving skeletal data from a motion detection system. The method also includes comparing the skeletal data with the gesture from the application in a runtime module. The method also further includes sending a gesture event to the application.

Abstract: Functionality is described herein for receiving events which characterize features in an environment, and for identifying at least one policy based on the events. The functionality consults a certificate, associated with the policy, to determine whether the policy is valid. If valid, the functionality uses the policy to govern the behavior of at least one application, such as by controlling the application's consumption of events. A trusted passport authority may be employed to generate the certificates. Each certificate may: (1) identify that it originated from the trusted passport authority; (2) contain context information which describes a context in which the policy is intended to be applied within an environment; and/or (3) contain machine-readable content that, when executed, carries out at least one aspect of the policy.

Abstract: A shared renderer maintains shared state information to which two or more augmented reality application contribute. The shared renderer then provides a single output presentation based on the shared state information. Among other aspects, the shared renderer includes a permission mechanism by which applications can share information regarding object properties. The shared renderer may also include: a physics engine for simulating movement of at least one object that is represented by the shared state information; an annotation engine for managing a presentation of annotations produced by plural applications; and/or an occlusion engine for managing the behavior of the output presentation when two or more objects, produced by two or more applications, overlap within the output presentation.

Abstract: Functionality is described herein for managing the behavior of one or more applications, such as augmented reality applications and/or other environment-sensing applications. The functionality defines permission information in a world-driven manner, which means that the functionality uses a trusted mechanism to identify cues in the sensed environment, and then maps those cues to permission information. The functionality then uses the permission information to govern the operation of one or more applications.

Abstract: Functionality is described herein by which plural environment-sensing applications capture information from an environment in a fine-grained and least-privileged manner. By doing so, the functionality reduces the risk that private information that appears within the environment will be released to unauthorized parties. Among other aspects, the functionality provides an error correction mechanism for reducing the incidence of false positives in the detection of objects, an offloading technique for delegating computationally intensive recognition tasks to a remote computing framework, and a visualization module by which a user may inspect the access rights to be granted (or already granted) to each application.

Abstract: The claimed subject matter includes techniques for processing gestures. An example method includes receiving a gesture from an application. The gesture includes one or more primitives from a language that is domain-specific to gestures. The method also further includes receiving skeletal data from a motion detection system. The method also includes comparing the skeletal data with the gesture from the application in a runtime module. The method also further includes sending a gesture event to the application.

Abstract: A crowdsourcing environment is described herein which uses a single-stage or multi-stage approach to evaluate the quality of work performed by a worker, with respect to an identified task. In the multi-stage case, an evaluation system, in the first stage, determines whether the worker corresponds to a spam agent. In a second stage, for a non-spam worker, the evaluation system determines the propensity of the worker to perform desirable (e.g., accurate) work in the future. The evaluation system operates based on a set of features, including worker-focused features (which describe work performed by the particular worker), task-focused features (which describe tasks performed in the crowdsourcing environment), and system-focused features (which describe aspects of the configuration of the crowdsourcing environment). According to one illustrative aspect, the evaluation system performs its analysis using at least one model, produced using any type of supervised machine learning technique.

Abstract: Functionality is described herein for receiving events which characterize features in an environment, and for identifying at least one policy based on the events. The functionality consults a certificate, associated with the policy, to determine whether the policy is valid. If valid, the functionality uses the policy to govern the behavior of at least one application, such as by controlling the application's consumption of events. A trusted passport authority may be employed to generate the certificates. Each certificate may: (1) identify that it originated from the trusted passport authority; (2) contain context information which describes a context in which the policy is intended to be applied within an environment; and/or (3) contain machine-readable content that, when executed, carries out at least one aspect of the policy.

Abstract: A shared renderer maintains shared state information to which two or more augmented reality application contribute. The shared renderer then provides a single output presentation based on the shared state information. Among other aspects, the shared renderer includes a permission mechanism by which applications can share information regarding object properties. The shared renderer may also include: a physics engine for simulating movement of at least one object that is represented by the shared state information; an annotation engine for managing a presentation of annotations produced by plural applications; and/or an occlusion engine for managing the behavior of the output presentation when two or more objects, produced by two or more applications, overlap within the output presentation.

Abstract: Functionality is described herein by which plural environment-sensing applications capture information from an environment in a fine-grained and least-privileged manner. By doing so, the functionality reduces the risk that private information that appears within the environment will be released to unauthorized parties. Among other aspects, the functionality provides an error correction mechanism for reducing the incidence of false positives in the detection of objects, an offloading technique for delegating computationally intensive recognition tasks to a remote computing framework, and a visualization module by which a user may inspect the access rights to be granted (or already granted) to each application.

Abstract: Functionality is described herein for managing the behavior of one or more applications, such as augmented reality applications and/or other environment-sensing applications. The functionality defines permission information in a world-driven manner, which means that the functionality uses a trusted mechanism to identify cues in the sensed environment, and then maps those cues to permission information. The functionality then uses the permission information to govern the operation of one or more applications.