Comparative Study of JPEG & TIFF File Formats for Geographic Information System based on Road Map of Chandigarh
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Image file formats are standardized means of organizing & storing digital images. Basically Image files consist of two graphic formats either vector or raster. In this paper authors are comparing to rater file formats Tagged Imaged File Format (TIFF) and Joint Picture Expert Group (JPEG), and advantages of TIFF over JPEG for GIS based applications. The objective of this research s to evaluate the results and characteristics of image file formats in GIS applications. The evaluation and analysis of image files are based on visual assessment and analysis of various attributes. The result of this experiment is mainly to evaluate the revenue maps pixels, size of maps, outlining the advantages and disadvantages between two file formats. The Investigation indicates that JPEG and TIFF format files appears to have discrepancy in the original image file and also have differences in their respective sizes. Result shows that TIFF is better than JPEG from GIS perspective as size is maintained during scanning and after editing, so files are not compressed and data is not lost, due to these advantages accurate spatial data analysis can be performed on GIS applications.
Keywords: Tagged Image File Format (TIFF), Joint Photographic Expert Group (JPEG), Geographic Information System (GIS), Limple-Ziv-Welch (LZW)