Hyperspectral Data Processing: Algorithm Design and Analysis

23.7 Linear Spectral Mixture Analysis

The HYDICE 15-panel scene in Figure 1.15 was used for experiments where the 19 R panel pixels, p₁₁, p₁₂, p₁₃, p₂₁₁, p₂₂₁, p₂₂, p₂₃, p₃₁₁, p₃₁₂, p₃₂, p₃₃, p₄₁₁, p₄₁₂, p₄₂, p₄₃, p₅₁₁, p₅₂₁, p₅₂, and p₅₃, provided by the ground truth in Figure 1.15(b) were used for quantitative analysis. According to the ground truth in Figures 1.15, 1.16, 1.17, nine signatures, m₁ = p₁, m₂ = p₂, m₃ = p₃, m₄ = p₄, and m₅ = p₅ in Figure 1.16 and background signatures, m₆ = grass, m₇ = road, m₈ = tree, and m₉ = interferer in Figure 1.17, were used to unmix these 19 R panel pixels for panel detection and quantification.

Table 23.4 gives the first 35 highest prioritized “de-correlated bands” by ID-BD with the threshold value ε set to 0.1 and the corresponding “BD-removed bands” where seven BP criteria, variance, SNR, skewness, kurtosis, entropy, ID, and negentropy, are used to prioritize bands.

Table 23.4 First 35 highest prioritized BP/BD bands and corresponding removed bands after ID-BD with ε = 0.1 using 7 BP criteria for BP of HYDICE data.

BR/BD bands	Corresponding removed bands
Variance	60/56/78/53/52/55/54/49/45/92/38/34/28/26/27/25/24/23/22/20/21/102/19/18/17/16/15/14/13/12/11/10/84/9/8	61/67/66/65/59/57/68/62/64/77/76/79/63/80/58/75/81/69/50/82/48/51/46/70/47/44/43/42/41/74/93/91/40/95/39/90/94/37/96/89/83/36/35/33/88/32/71/31/30/97/29/87/73/103/108/105/104/109/101/106/107/111/110/112/113/100/114/72/115/99/86/116
Skewness	1/122/50/127/2/169/168/128/129/45/167/22/ ...