Method and apparatus for stretching bitmaps to non-integer...

Details Method and apparatus for stretching bitmaps to non-integer... Method and apparatus for stretching bitmaps to non-integer...

G - Physics

06

T

G06T 1/00 (2006.01) G06T 3/00 (2006.01) G09G 5/391 (2006.01)

Patent

CA 2148177

The stretching of bitmap images in a computer system is accomplished by stretching each row of a source bitmap and storing the pixel information associated with the stretched row in a buffer, typically in main memory. The pixel information is transferred multiple times to the memory location associated with the destination bitmap, these memory locations generally reside in either main memory or in the frame buffer. Each time the buffer is written to the destination bitmap, an error term is adjusted by a predetermined amount. When the value of the error term meets a predefined criteria, the next row of the source bitmap is stretched and stored in the buffer and the process is repeated.

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