Abstract: A system is disclosed for detecting or confirming gestures performed by a user by identifying a vector formed by non-adjacent joints and identifying the angle the vector forms with a reference point. Thus, the system skips one or more intermediate joints between an end joint and a proximal joint closer to the body core of a user. Skipping one or more intermediate joints results in a more reliable indication of the position or movement performed by the user, and consequently a more reliable indication of a given gesture.

Abstract: A system and method are disclosed for recognizing and tracking a user's skeletal joints with a NUI system and further, for recognizing and tracking only some skeletal joints, such as for example a user's upper body. The system may include a limb identification engine which may use various methods to evaluate, identify and track positions of body parts of one or more users in a scene. In examples, further processing efficiency may be achieved by segmenting the field of view in smaller zones, and focusing on one zone at a time. Moreover, each zone may have its own set of predefined gestures which are recognized.

Abstract: A system and method are disclosed for recognizing and tracking a user's skeletal joints with a NUI system and further, for recognizing and tracking only some skeletal joints, such as for example a user's upper body. The system may include a limb identification engine which may use various methods to evaluate, identify and track positions of body parts of one or more users in a scene. In examples, further processing efficiency may be achieved by segmenting the field of view in smaller zones, and focusing on one zone at a time. Moreover, each zone may have its own set of predefined gestures which are recognized.

Abstract: A system is disclosed for providing a user a margin of error in capturing moving screen objects, while creating the illusion that the user is in full control of the onscreen activity. The system may create one or more “collision volumes” attached to and centered around one or more capture objects that may be used to capture a moving onscreen target object. Depending on the vector velocity of the moving target object, the distance between the capture object and target object, and/or the intensity of the collision volume, the course of the target object may be altered to be drawn to and captured by the capture object.

Abstract: A system is disclosed for detecting or confirming gestures performed by a user by identifying a vector formed by non-adjacent joints and identifying the angle the vector forms with a reference point. Thus, the system skips one or more intermediate joints between an end joint and a proximal joint closer to the body core of a user. Skipping one or more intermediate joints results in a more reliable indication of the position or movement performed by the user, and consequently a more reliable indication of a given gesture.