Doors of perception where opened. Interesting at the hexagonal structures in the retina alone.

Check this out..

[link to www.researchgate.net (secure)]

snips~

Cross section of human retina showing the hexagonal structure of the photoreceptor cones densely packed in the fovea [4] pixel centres, approximately 13% fewer pixels are required to represent the same image resolution as required on a rectangular grid with unit horizontal and vertical separation of pixel centres.


processing tasks have traditionally involved the use of square operators on rectangular image lattices. A more recently explored concept is the use of hexagonal pixels for image representation, introducing the area of hexagonal image processing. A prominent factor that merits the investigation of the hexagonal lattice as an alternative grid structure for image representation is its similarity to the human fovea. In order for humans to process visual input, the eye captures information that is directed to the retina located on the inner surface of the eye. A small region within the retina, known as the fovea and consisting of a high density of cones, is responsible for sharp vision capture and is comprised of cones that are shaped and placed in a hexagonal arrangement [ 4, 7, 10], as shown in Figure 1. This hexagonal mosaic provides the motivation to investigate an alternative grid structure for image representation other than rectangular