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 . 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. 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,