Oblique projection original and oblique projection original form

Details Oblique projection original and oblique projection original form Oblique projection original and oblique projection original form

1980-09-15

1983-12-20

Krass, Errol A.

Boots, shoes, and leggings

315371, 353 69, 353 70, 358 60, 364571, 382 54, G03B 2100, G06F 1520

Patent

active

044221533

ABSTRACT:
An oblique projection original is formed by deforming an orthogonal projection original in such a manner that a rectangular original is transformed into a trapezoidal original by compressing the orthogonal projection original by thinning scanning lines in a horizontal direction. In addition, predetermined bits in each scanning line are thinned in a vertical direction, and each line is compressed by reducing first and last portions of each line by half the number of bits thus thinned. Finally, white bits are inserted at the first and last portions of each scanning line to complete each scanning line.

REFERENCES:
patent: 1272623 (1918-07-01), Comstock
patent: 3115544 (1963-12-01), Marley
patent: 3963337 (1976-06-01), Lundberg
patent: 4004093 (1977-01-01), Oland
patent: 4194216 (1980-03-01), Ohmuri
patent: 4210929 (1980-07-01), Takabayashi
Robertson; "Projection Television;" Wireless World, vol. 82, No. 1489, pp. 47-52; Sep. 1976.

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