摘要:
An imaging system includes an image sensor, a first light source on-axis with the image sensor, and a controller. The image sensor is configured to generate an image of a field of view including a retroreflector. The first light source is configured to illuminate the retroreflector, and the controller is configured to output the image and location data for the retroreflector.
摘要:
A pointing device includes a base surface. The pointing device includes a moveable puck confined to move over the base surface within a puck field of motion. The pointing device includes a position detector for identifying a position of the puck. The pointing device includes a first light source for providing visible light through the puck.
摘要:
A method of focusing a digital camera module with an image sensor including capturing an image of a test target with the digital camera module, determining a focus quality of the image with the image sensor, outputting a signal related to the focus quality of the image from the digital camera module to a focusing station external to the digital camera module, and determining whether a position of a lens from the image sensor within the digital camera module should be altered to improve a focus quality of subsequently captured images.
摘要:
Two or more spatial filters are used in determining velocity based on speckle translation. A light source may be turned on, turned off, or both for a variable amount of time during operation. The velocity may then be determined with trend identification, correlation, recursive frequency estimation, or measurement bandwidth variation. A confidence level may also be calculated for the measured velocity, and the measured velocity reported or used only when the calculated confidence level meets or exceeds a given value.
摘要:
An optical navigation system, e.g. optical mouse, determines optical navigation quality by examining some or all of the photosensors of a frame or monitoring intermediate or final results of the motion estimation system. The optical navigation quality is then used to determine the navigation output produced by the optical navigation system.
摘要:
An imaging system and method are provided that use imaging information relating to positions of one or more retroreflectors attached to one or more surfaces of an object of interest to determine the shape and/or displacement of the surface or surfaces on which the retroreflector or retroreflectors are located. A variety of types of information may then be ascertained based on the determination as to the shape and/or displacement of the surface of the object, such as the value of some physiological parameter of a patient, internal and external pressure of an object, acoustical vibrations sensed by a microphone, positions of fingertips on a keyboard, etc.
摘要:
Eye detection is used as the basis for providing power management or other variations of operational parameters of a controlled device. The system includes an imager and eye detection processing which cooperate to detect light received from a person's eye. The eye detection processing generates an output that can be used for determinations regarding presence of one or more persons or presence of a specific person. This output is used as the basis for switching the controlled device between at least two power consumption states. Eye detection may also be used to allow a person to actively adjust operational conditions of the controlled device, since unnatural eye blinking patterns may be associated with particular commands.
摘要:
A system for generating position information includes a computing device and a position determination system that is configured to determine the position of a passive pointing element. In an embodiment, the position determination system is integrated into the computing device and includes two detectors that determine the linear or angular position of the passive pointing element, from which triangulation is used to identify the two dimensional position of the passive pointing element. Because the triangulation detectors determine the linear or angular position of the passive pointing element without active input from the passive pointing element, the passive pointing element can be unpowered and untethered.
摘要:
A reflector and a powerless signal generator mechanism are incorporated into a single powerless pointing device. A light source generates a light signal, and the reflector incorporated within the powerless pointing device reflects the light signal back to a image collection system of a computer. Image data is generated, and is used to generate position data relating to the position of the reflector. The position is correlated to a position on a graphical user interface. A user action activates the powerless signal generator mechanism, generating a signal. The signal can be, for example, in the form of a sound pulse having one or more predetermined frequencies or an RF signal generated by a piezo-electric transducer.
摘要:
A system for generating orientation information includes a reflector, an image collection system, and a processor. The image collection system is configured to collect at least two sets of image data, where one set of image data includes a stronger indication of the reflector than the other set of image data. The two sets of image data are collected using at least one reflector with some orientation-specific characteristic or a reflector integrated into a device that includes some orientation-specific structural feature. Once collected, the two sets of image data are used to generate orientation information related to the reflector. In particular, orientation information related to the reflector is generated by taking the difference between the two sets of image data.