| Patent Number |
Title Of Patent |
Date Issued |
| RE35456 |
Fluoroscopic method with reduced x-ray dosage |
February 18, 1997 |
| A method of fluoroscopically observing a living creature with reduced x-ray dosage is usable with a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high |
| 5619998 |
Enhanced method for reducing ultrasound speckle noise using wavelet transform |
April 15, 1997 |
| Signal-dependent noise in a coherent imaging system signal, such as in medical ultrasound imaging, is reduced by filtering speckle noise using nonlinear adaptive thresholding of received echo wavelet transform coefficients, thereby enhancing the resultant image by improving the signa |
| 5616824 |
Instrument for detecting potential future failures of valves in critical control systems |
April 1, 1997 |
| Apparatus for monitoring the health and response of critical electromechanical control valves to detect the likelihood of future valve malfunction includes the use of Fourier transform decomposition and time-domain wavelets to selectively enhance portions of the valve response signal |
| 5550880 |
Motor current signal processor using analog substraction of an estimated largest sine wave compo |
August 27, 1996 |
| A signal processing system includes a phase locked loop for locking a largest sine wave phase and frequency element of an incoming analog signal; an amplitude estimator for estimating a maximum amplitude of the incoming signal; a multiplier for multiplying the estimated largest sine |
| 5497777 |
Speckle noise filtering in ultrasound imaging |
March 12, 1996 |
| The enhancement of ultrasound images is provided through the filtering of signal dependent noise such as speckle noise by dividing the signal into selective subintervals and utilizing discrete wavelet transform and the identification and selection of those wavelet transform coefficients |
| 5493598 |
Fluoroscopic imager with frame-filling apparatus |
February 20, 1996 |
| A fluoroscopic imager for observing a living creature with reduced x-ray dosage uses a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high that bri |
| 5400383 |
Fluoroscopic imager with frame-filling apparatus |
March 21, 1995 |
| A fluoroscopic imager for observing a living creature with reduced x-ray dosage uses a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high that bri |
| 5361307 |
Correlation methods of identifying defects in imaging devices |
November 1, 1994 |
| An automated system for determining artifacts in images indicating defects in an imaging device being tested employs a constant radiation source which supplies radiation of spatially uniform intensity to the imaging device to be tested. The imaging device then creates a flood image A |
| 5325198 |
Unitary transform methods of identifying defects in imaging devices |
June 28, 1994 |
| An automated system for determining artifacts in images indicating defects in an imaging device being tested employs a constant radiation source which supplies radiation of spatially uniform intensity to the imaging device to be tested. The imaging device then creates a flood image A |
| 5319696 |
X-ray dose reduction in pulsed systems by adaptive X-ray pulse adjustment |
June 7, 1994 |
| An interactive system for producing acceptable quality fluoroscopy images determines X-ray tube photon count and voltage while minimizing X-ray radiation dosage to a subject. Parameters of the subject and the type of image to be produced are provided to the system. X-ray tube voltage U a |
| 5293415 |
X-ray fluoroscopy system for reducing dosage employing iterative power ratio estimation |
March 8, 1994 |
| An interactive system for producing acceptable quality fluoroscopy images determines X-ray tube photon count and voltage while minimizing X-ray radiation dosage to a subject. Parameters of the subject and the type of image to be produced are provided to the system. X-ray tube voltage and |
| 5224141 |
Fluoroscopic method with reduced x-ray dosage |
June 29, 1993 |
| A method for fluoroscopically observing a living creature with reduced x-ray dosage is usable with a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently hig |
| 5187754 |
Forming, with the aid of an overview image, a composite image from a mosaic of images |
February 16, 1993 |
| A method for generating a composite terrain map, proceeding from an overview taken at relatively high altitude and photographs taken at relatively low altitudes, generates a composite terrain map that is relatively free of step irradiance variations where the photographs taken at rel |
