Decomposition and recombination of a wide-aspect ratio image

Details Decomposition and recombination of a wide-aspect ratio image Decomposition and recombination of a wide-aspect ratio image

1991-10-10

1992-06-30

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358142, H04N 704

Patent

active

051268442

ABSTRACT:
Each line of a wide aspect ratio television signal is divided into a main panel component and an autmentation panel component joined to the main panel component at a stitch point for transmission or storage. At the transmitter, a first signal is extracted from the horizontal line signal, the first signal including the main panel component, a plurality of main panel redundant pixels extending from the main panel into the augmentation panel component, and a multiplicity of weighted main panel transition samples extending further into said augmentation panel component from the redundant samples. Similiarly, a second signal includes the augmentation panel component, a plurality of augmentation panel redundant samples extending into the main panel and a plurality of transition augmentation samples extending from the redundant augmentation samples further into the main panel and weighted to create a predetermined transition curve. At the receiving end, both signals are gated to delete the transition curves, and the redundant samples are linearly weighted to effect the transition from the main panel component to the augmentation panel component. When two augmentation panels are transmitted in a multiplex analog format on the same channel, they are transmitted adjacent to one another and the weighted transition augmentation samples effect a transition from the last redundant pixel of one augmentation panel component to the first redundant pixel of the second augmentation panel component.

REFERENCES:
patent: 4533936 (1985-08-01), Tieimann et al.
patent: 4581640 (1986-04-01), Cole
patent: 4636875 (1987-01-01), Scholz
patent: 4668985 (1987-05-01), Kurashige et al.
patent: 4748496 (1988-05-01), Drury et al.
LoCicero et al., "Edgestitching of a Wide-Aspect Ratio HDTV Image" IEEE 1986.

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