Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1987-06-02
1988-08-16
Shepperd, John W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358133, 358138, H04N 146, H04N 1415
Patent
active
047648058
ABSTRACT:
A preview still video image, comprising a smaller number of binary bits to expedite digital transmission, is constructed block-by-block from a full-quality still video image by (a) sampling every n video pixels in each horizontal video line of each block and averaging between adjacent ones of the sampled pixels, and (b) sampling every m horizontal video lines in each block and averaging between adjacent ones of the sampled lines. An image is reconstructed from the preview image by using a buffer which temporarily stores the last video line in each block, and interpolating it with the first line in the next block, as well as interpolating all subsequent adjacent line pairs in the block. Adjacent pairs of the sampled pixels in each line are also interpolated. The image thus reconstructed comprises as many pixels and horizontal lines as the full-quality image.
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Porcellio Rocco J.
Rabbani Mojgan
Eastman Kodak Company
Shepperd John W.
Wallace Robert M.
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