Method and apparatus for polynomial approximation of nonlinear o

Details Method and apparatus for polynomial approximation of nonlinear o Method and apparatus for polynomial approximation of nonlinear o

1998-06-09

2000-04-04

Kamm, William E.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600438, A61B 800

Patent

active

060455047

ABSTRACT:
Methods and apparatus for reducing the amount of computation required by nonlinear operations in medical ultrasound imaging by using lower-order polynomials to approximate the nonlinear functions. The method can be applied to envelope detection, phase detection, logarithmic compression and other nonlinear functions. Various pre-processing techniques (e.g., pre-reducing the data range and pre-dividing an entire range of the input into a number of subranges) can optionally be used prior to the polynomial approximation to achieve better accuracy, further reduce the polynomial order, and/or simplify the implementation.

REFERENCES:
patent: 4936308 (1990-06-01), Fukukita et al.
patent: 5322068 (1994-06-01), Theile et al.
patent: 5553618 (1996-09-01), Suzuki et al.

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