摘要:
A method of target recognition performs a 3D comparison of target and reference data. Translation invariant signatures are derived from the two data sets, and an estimate of the orientation of the target with respect to the reference is obtained. Rotational alignment and comparison can then be achieved. The 3D data sets can be represented on an axi-symmetric surface such as a sphere and rotational convolution, over a discrete set of selected rotation angles can be performed. Optic flow can be used to derive the estimate of orientation or the target relative to the reference, in terms of a displacement field.
摘要:
A vibration dosimeter (2) adapted to monitor whole-body vibration comprising a sensor (6) arranged to continuously measure magnitude of mechanical vibrations received by a person being monitored, means for sampling the vibration measurements (20) produced by the sensor (6), and a processor (10) configured to analyse the vibration measurements and to record an analysis thereof to a data store internal to the dosimeter (2).
摘要:
A method of compensating for or correcting satellite ephemeris error involves measuring time difference of arrival (TDOA) and frequency difference of arrival (FDOA) for signal replicas received via two satellites (34, 46) from calibration transmitters (42a to 42d) at different geographical locations. An initial satellite ephemeris consisting of position and velocity vectors is used to calculate ephemeris changes yielding estimated TDOA and FDOA values providing a best fit to measured TDOA and FDOA values. This provides estimated changes required to compensate for or to correct errors in the initial satellite ephemeris. The method may be iterated to deal with large ephemeris changes: i.e. the changes obtained in one iteration may be used to correct ephemeris for use as a new initial ephemeris in a following iteration. The method may be used to correct ephemeris errors in one or both satellites, if so a greater number of calibration transmitters EphemCal 1 to EphemCal 10 may be used.
摘要:
Methods and associated apparatus and programs for computers for operating geolocation devices are provided. The methods include determining the duration of a time interval during which the device is configured to remain active, responsive to a comparison between an estimate of benefit of remaining on for that time interval and an estimate of cost of remaining on for that time interval. The estimates of cost and benefit may be determined in response to user-selected parameters where by the end-user may effect a trade-off between battery life and receiver sensitivity. The methods also include varying the maximum duration of each listening period whereby to conserve battery power.
摘要:
Demodulation apparatus (150) for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) (157) for generating in-phase (I) and quadrature-phase (Q) signals in response to an unmodulated input signal. The QSG provides fast frequency tracking of the input signal and excludes any high-frequency content the input signal.
摘要:
A spectral microscopy device includes a spectral detecting unit including a light source that is capable of controlling an output wavelength, a microscope section that is provided with an observation area that is illuminated with light output from the light source, and a signal detector that detects light from the observation area as spectral data; a moving unit configured to move the observation area; and a controller that performs a control operation to allow the spectral detecting unit and the moving unit to move in response to each other. The spectral microscopy device is controlled so that switching between different measurement conditions based on the number of measurement points is performed at an observation area movement time in which the observation area is moved by the moving unit and measurement is performed and at a observation area movement stoppage time in which the observation area is fixed and measurement is performed, and spectral data is detected.
摘要:
An image processing method generates (S204) first developed image data by correcting first image data with use of a white balance correction value corresponding to flash light, generates (S205) second developed image data by correcting the first image data with use of a second white balance correction value corresponding to external light, calculates (S209) a combining ratio of each block based on a flash component and an external light component of each of blocks into which the first image data is divided, and combines (S210) the first developed image data and the second developed image data according to the calculated combining ratio.
摘要:
An image processing apparatus includes a detection unit configured to detect movement information for specifying a movement direction of a specific moving object detected from an image obtained by at least one of a plurality of image capturing units, a prediction unit configured to predict a second image capturing unit configured to image-capture the specific moving object subsequently to a first image capturing unit based on the movement information detected by the detection unit and information representing an image capturing range of each of the plurality of image capturing units, and a display control unit configured to perform display for specifying a prediction result by the prediction unit before the second image capturing unit image-captures the specific moving object.
摘要:
There is provided a printing control apparatus for generating raster image data according to a print job received from an external apparatus and transmitting the raster image data to a printing apparatus. The printing control apparatus includes an acquisition unit that acquires a power state of the printing apparatus, and a control unit that causes the printing control apparatus to enter an OFF state in the case that a acquired power state is the first power saving state, and causes the printing control apparatus to enter a power saving state such that the printing control apparatus can transmit a wake-up packet for recovering the printing apparatus from the second power saving state in the case that the acquired power state is the second power saving state.