
36 ◾ Jingang Zhong and Jiawen Weng
Gaussian function are given in Box2.1. Figure2.3 shows the Gaussian
window (a = 30) centered at the 128th pixel (b = 128) and 384th pixel
(b = 384). e power spectra of the local sinusoidal and nonsinusoidal
fringe signals selected by the corresponding Gaussian window are car-
ried out for comparative analysis, as shown in Figures2.4a and 2.4b. For
the nonsinusoidal fringe signal, the fundamental spectral component of
the local signal centered at the 128th pixel is superposed by the higher-
order spectral components of the local signal centered at the 384th pixel.
However, this does not happen in the case ...