Index 853
Weighted median interpolation, 285f
Weighted median smoothers, 267–269, see also
Running median smoothers
computation, 267
operation, 268, 268f
recursive, 269
Weighting function, 576
Welch estimate, 193
White Gaussian noise, 210, 213, 214, 234f, 245f,
250f, 554
Wiener filter, 147, 249, 254, 333, 334
Wiener restoration, 336f
Windows in binary image morphology, 80–82,
81f
Wraparound convolution, 107
X
X-ray computed tomography, 742–744, 743f
Y
YIQ color coordinate system, 15 Yule-Walker equations, 335
Z
Zero coding (ZC) primitive, 452 Zero-bit watermarking systems, 602–603, 618 Zero-mean additive white noise model, 230 Zero-padding in linear convolution, 110, 111f Zerotree-based framework and EZW coding,
478–485, 479f