The histogram of a red band in a 3-bit satellite image is shown below. Which of the following statements is/are correct?
For the correlation matrix of a 4-band satellite image as shown below, which of the following statements is/are correct?
Band 1 | Band 2 | Band 3 | Band 4 | |
Band 1 | 1 | 0.95 | 0.36 | 0.92 |
Band 2 | 0.95 | 1 | 0.40 | 0.93 |
Band 3 | 0.36 | 0.40 | 1 | 0.42 |
Band 4 | 0.92 | 0.93 | 0.42 | 1 |
Principal Component Analysis is performed on a 4-band IRS satellite image. The eigenvalues \( \mathbf{E} = [\lambda_{1,1}, \lambda_{2,2}, \lambda_{3,3}, \lambda_{4,4}] \) computed from the covariance matrix are 887.60, 75.20, 37.60 and 6.73, respectively. The percentage of total variance explained by the third principal component (\( \lambda_{3,3} \)) is __________ (rounded off to 2 decimal places).