On the design of quadratic filters with application to image processing.
We present a systematic design method for quadratic filters, and show an example for an edge detector. Our design maximizes the output signal-to-noise ratio (SNR) constrained to detect desired signals while ignoring specified error signals such as shot noise. This filter compares favorably with Sobel and morphological detectors of similar complexity.
Uppala
S V
SV
Dept. of Electr. Eng., Washington Univ., Seattle, WA.
Sahr
J D
JD