Surgery – Truss – Pad
Patent
1995-09-29
1996-07-30
Manuel, George
Surgery
Truss
Pad
12866004, A61B 800
Patent
active
055402283
ABSTRACT:
An interrogation region of a patient's body is scanned with an ultrasonic probe. At least one input data frame is generated representing the scanned interrogation region as a pattern of image elements, each with a corresponding input intensity value, that are stored in a memory. The input data frame is then displayed as a pattern of displayed intensity values, which the processor calculates as combination of a geometry-independent function of an ambient light input array and a geometry-dependent function of the input intensity values, in which the geometry-dependent function includes a coefficient term that multiplies the input intensity array and that itself is a function of the input intensity values. As part of the coefficient term is a filtered input data array, which results from noise-floor filtering, low-pass filtering, and surface normal vector averaging of the input intensity array. In a preferred embodiment of the invention, the user selects an assumed light source vector, and/or an assumed viewer direction vector, which are the incorporated into the geometry-dependent function used to calculate displayed intensity values.
REFERENCES:
patent: 5375600 (1994-12-01), Melton, Jr. et al.
patent: 5485843 (1996-01-01), Greenstein et al.
Manuel George
Siemens Medical Systems Inc.
Slusher Jeffrey
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