Based on the obtained focal distance, an equivalent virtual sphere mirror is visualised to be intersecting the image plane at a constrained distance, h.
Therefore, we establish the existence of a virtual sphere, assuming to be located at a constrained distance intersecting the image plane based on the calibrated f.
In order to correctly count the number of individual voids, an adjustment has to be made to correct for the voids intersecting the image boundary.
For an arbitrary pixel (x, y) in this region, we can draw a line passing through (x, y) with angle θ in the image and the line intersects the image boundaries.
Slices through the x,z and y,z planes of the reconstructed images were extracted from the dataset, marked by the yellow horizontal (x,z plane) and vertical (y,z plane) lines intersecting the images in the upper left and lower right panels.
In particular, the line from 0 to w would fail to intersect this image.
Specifically, for every pixel (x, y) that lies on an edge (i, j) we project a line perpendicular to the edge direction that intersects the image coordinate (x, y), and find the connected components that intersects the projected line.
Jogs are introduced into each chain, preventing it from intersecting with periodic images of itself.
In our approach, corners are considered as image points intersecting two line segments at a given angle range.
Mr. Greenaway's verbal argument is more persuasive than his visual or, more specifically, filmmaking one, which tends to divide the image into intersecting and overlapping squares that greatly resemble software windows, effectively turning the movie screen into a computer monitor.
