Abstract
Abstract The 1:1000 digital topographic maps are key large-scale map resources and crucial reference basis for national infrastructure construction. Priority is given to these maps in the National Geographical Information System Building and Ten-Year Promotion Plan. The image edition in building process should meet the provisions of Format Form of Basic Topographic Map Database issued by the Ministry of Interior in September 2007. The data of the edited image files are scrutinized on manual basis. This is time consuming and causes inconsistent quality due to inspection by different persons. From objective view, this study selected drafts (No.2904518 and No.2854515) of 1:1000 urban planning aerial photographic maps of Gongguan Township and Tunglo Township of Miaoli County as the testing areas, and adopted conventional manual sampling for testing. The maps which failed to meet the Format Form of Basic Topographic Map Database were classified and serve as the basis of constraint conditions of inspection program. The 1:1000 maps (in testing areas A, B and C) inspected manually were compared with the results of inspection program. The findings indicated that manual inspection in experimental area requires 4 hours/2 persons to find 214 errors, and the inspection program only spends 10 min/1 person to find 19852 errors, and generate report statistical analysis. The pixel errors of maps (in testing areas A, B, C) accounted for 26.8%, 76.2% and 5.19% of total errors respectively. The image inspection program of topographic maps proposed by this study allows users to define different constraint conditions for inspection, obtain overall inspection results of image pixel of topographic maps, and reflect the quality of final maps.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
