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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Filters
verfasst von : Wilhelm Burger, Mark J. Burge
Erschienen in: Digital Image Processing
Verlag: Springer London
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The essential property of point operations (discussed in the previous chapter) is that each new pixel value only depends on the original pixel at the same position. The capabilities of point operations are limited, however. For example, they cannot accomplish the task of sharpening or smoothing an image (Fig. 5.1). This is what filters can do. They are similar to point operations in the sense that they also produce a 1:1 mapping of the image coordinates, that is, the geometry of the image does not change.