00000nam 2200000zi 4500 9.946502 CaOODSP 20250103135205 m o d f cr |n||||||||| 250103e199303##oncb ob f000 0 eng d CaOODSP eng rda CaOODSP En57-61/93-2E-PDF Van Os, Jim, author. Displaying digitally resampled surface meteorological data / by Jim Van Os and Paul Van Rijn. [Toronto] : Environment Canada, Atmospheric Environment Service = Environnement Canada, Service de l'environnement atmosphérique, March 1993. 1 online resource (20 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Ontario region technical notes ; ORTN-93-2 Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also by the Ontario Weather Centre. Includes bibliographical references (page 20). "Digital image processing of meteorological data is currently a common practice for many data types, such as satellite and radar. It is not, however, as common to the surface observations of data fields such as pressure or dew point where the data alginates as an irregular set of alpha-numeric data points. These types of meteorological fields are generally treated in an more analogue sense, using either character based displays or floating point precision contoured graphics. This report summarizes the results of treating geographically irregular surface datasets with digital image processing techniques. These irregular datasets were first interpolated to a grid and saved in a database. These grids were then remapped to a series of pixel-based map projections, with the data resampled to a very fine pixel-based grid and the data values discretized to seven bit limits, in effect giving every pixel of the new image a discrete value"--Introduction. Image processing Digital techniques. Meteorology Data processing. Traitement d'images Techniques numériques. Météorologie Informatique. Canada. Atmospheric Environment Service (Ontario Region)‏, issuing body. Canada. Ontario Weather Centre, issuing body. Ontario region technical notes ; ORTN-93-2. (CaOODSP)9.938921 PDF 2461 KB https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-61-93-2-eng.pdf