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Showing posts from November, 2020

The construction of the Tower of Béla - Adventures in Anaglyphs - Part One - By Daniel Scott Matthews

  The construction of the Tower of Béla Figure 1. The Tower of Béla - In homage to Bela Julesz b y Daniel Scott Matthews This article requires the use of Red-Blue(Cyan) 3D, Anaglyph glasses. All artwork produced on an Intel based desktop PC running the LinuxMint (Debian) operating system, including the GIMP , Inkscape , G’MIC and Blender software packages, all of which are free open source software (FOSS).  Figure 2. The minimal image. What is the minimal image? Two pixels with differentially encoded values (two bits) on a field of not image (ten bits) with a minimum of 3 states required (ternary), however if we ignore the not-image we need only two bits in a binary system, but if we wish to encode depth where are we going to store that information in the visual signal? In the anaglyph the depth of an area of the image (smallest recognisable shape) is encoded as a displacement of that shape’s representation in one channel compared to the others. Red is displaced relative to the in