Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1994-04-14
1995-08-29
Moore, David K.
Image analysis
Image transformation or preprocessing
Changing the image coordinates
395128, 348581, 358528, G06K 942
Patent
active
054468043
ABSTRACT:
A method of magnifying a digital image based on an edge map. The image has many original pixels, with each pixel having a level, and the locations of the pixels having a resolution. The method to magnify the image includes the steps of producing an edge map with many boundaries from the digital image, projecting the edge map onto the digital image, generating one or more additional pixels in locations among the original pixels by manipulating the levels of one or more original pixels without crossing any boundaries set by the edge map, and expanding the distances between the pixels so that the resolution of the locations of the pixels becomes the same as the original pixels. In another preferred embodiment, the original digital image is enlarged to the size of the magnified image by extending proportionally the locations of the original pixels. Then the edge map is produced and projected onto the enlarged image to generate additional pixels. After the step of generating, the resolution of the locations of the pixels becomes the same as the original pixels.
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Hancock et al., "Multiresolution Edge Labelling Using Hierarchical Relaxation" IEEE (1992) Proc. 11th Int'l Conf. on Pattern Recognition vol. II. Conf 13 pp. 140-144.
Allebach Jan P.
Wong Ping W.
Cammarata Michael R.
Hewlett--Packard Company
Moore David K.
Tong Peter P.
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