Research on Virtual Color Restoration of Complex Building System Based on Discrete Wavelet Transform

Figure 3

Comparison of restoration effects of cultural heritage buildings: (a) Haar wavelet 2-level decomposition PSNR = 39 dB, (b) Bior4.4 wavelet 2-level decomposition PSNR = 41 dB, (c) Haar wavelet 4-level decomposition PSNR = 39 dB, and (d) Bior4.4 wavelet 4-level decomposition PSNR = 41 dB.

(a)

(b)

(c)

(d)