Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2006-04-18
2006-04-18
Lee, Thomas D. (Department: 2624)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003010, C358S003030, C358S534000, C382S162000, C382S252000
Reexamination Certificate
active
07031021
ABSTRACT:
While powerful in diffusion at one resolution to print photos at a finer resolution, the invention is not thus limited. It defines superpixels (“spels”) for each desired colorimetric level, generates/receives image data, renders by finding levels for image positions, and prints an image using selected spels. One invention aspect finds a randomized value at each found level and uses the value to select the spel from plural ones for each level. Another aspect derives/maintains a randomized-value matrix; and maps a matrix location to an image position, to select a random value at that location and spel for that position. Another uses the value in common for all planes to select a spel for each plane at the found level—compatible spels for different planes, to coordinate color placement in planes. Another controls defining/selecting for a blue-noise property of spels in aggregate. In another, spels defined for a level vary in value to yield nonintegral color quanta. Preferences: Rendering is 1D per color, plus a dummy dimension holding the value (a least-significant bit from rendering, in a color dimension but decorrelated from levels)—and derives/maintains the matrix, derived/corrected for blue noise and including small interleaved 1D matrices tiled across and wrapped around the larger. Mapping uses values as pointers into dimensions of a spel table, and color-plane identification as a pointer into a third table dimension; it uses a common value in all planes to avoid drop-on-drop. Spels are Fourier-screened.
REFERENCES:
patent: 6203133 (2001-03-01), Tanaka et al.
patent: 6315391 (2001-11-01), Kanematsu
patent: 6331898 (2001-12-01), Yokoi et al.
Guerrero Francisco
Lain Antonio
Such Alberto
Lee Thomas D.
Lippman Peter I.
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