G - Physics – 09 – G
Patent
G - Physics
09
G
375/4
G09G 5/00 (2006.01) G06T 3/40 (2006.01) G09G 5/02 (2006.01)
Patent
CA 2012405
ABSTRACT OF THE DISCLOSURE A method and apparatus are disclosed in a data processing system for rapidly resizing color images which are comprised of rows and columns of picture elements, each picture element including multiple color components. A first table is created which includes values which correspond to selected percentages of each permitted magnitude of color component. In an embodiment where each color component is restricted to an equal number of permitted magnitudes only one table will be required. Next, operator inputs which indicate the desired image size are utilized to dynamically create a second table which contains nonrepetitive information which may be utilized to determine what percentages of existing picture elements must be utilized to create new picture elements for the resized image. The percentages from the second table are then utilized to access the values within the first table to determine those values of each color component which must be combined to create each new picture element. After all of the components of each new picture element have been determined, the components are combined and the new picture elements are utilized to display a resized color image. In this manner, it is possible to create a resized color image by utilizing a look-up table and combination scheme rather than utilizing extensive processor assets to dynamically calculate each new picture element in turn.
Deacon John J.
International Business Machines Corporation
Kerr Alexander
LandOfFree
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