4-4 Average interface and standard deviation of air-water interface. Number of statistics:
     2 0 0                                                                        . 4 9 4-5 Superposition of sequence of edge images before outlier rejection and a column (at
     188th X pixel) of sum of sequence of interface images with an outlier point . . 49 4-6 Sum  of sequence of edge images after outlier rejection and a column (at 188th X
     pixel) of sum of sequence of interface images without any outlier points . 50 4-7 Comparison of interface images without and with outlier rejection. The average
     images are shown before outlier rejection (left) and after outlier rejection (right). 51 4-8 Comparison of standard deviation values before and after outlier rejection . 51 4-9 Projection transformation and reverse projection transformation of the calibration
     im a g e .                                                                   . 5 2 4-10 The average interface image and the corresponding reverse transformation to world
     c o o rd in a te s .                                                         . 5 3 4-11 Interface image in world coordinates and corresponding polynomial fit . . 54 4-12 Polynomial fit, of order 5, of average interface image (left) and corresponding slope
     o f in terfa c e (rig h t) .                                                 . 5 5