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1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 1992

1 Pyka K.

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Cyfrowe przetwarzanie obrazow lotniczych

100%

Pyka K.

tom 404

249-256

Digital processing of areal photographs consists of various computer operations in which the photograph forms the basic input data set and the universally accepted form of final results. In order for the image to become "legible" input data for the computer, it must first be given an appropriate digital form. In principle, this can be achieved in two ways: digitalization of areal photographs (an appropriate processor is needed); or direct digital recording of image (as in scanners). Typical tasks of digital processing include, among others: visualization of digital image, correcting of geometrical deformations, creation of new images - compositions of the so called spectral channels. This paper shows examples of these types of tasks, with regard to both initially areal photographic images, and images recorded by scanning. Particular attention is given to the problem of digital image visualization. Both the results achieved during the last few years using the ODRA 1325 computer, and the most recent results obtained with an IBM AT class personal computer are discusse