RESEARCH ON THE METHODS OF QUALITY INSPECTION FOR PUBLISHED CHARTS BASED ON ENTITY RULES AND CARTOGRAPHIC SPECIFICATIONS

Haitao, Z.; Xuefang, L.; Xiaorong, G.

For Chinese paper charts, no standards are made yet, quality of paper charts are controlled by “there-level inspection” with naked eyes at present. This method has many disadvantages like more errors, more omissions, low efficiency and resource wastes etc. But paper charts can not be totally replaced by electronic charts in a short time. Thus, the research on new quality inspection method for paper charts in digital age is absolutely necessary. Aiming at the production of paper charts in digital environment, a new quality inspection method based on entity rules and cartographic specifications is put forward in this paper.

Firstly, considering the fact that updating speed of charts database is closely related to the changing speed of maritime objects, each category of maritime features are analyzed from different aspects including their attributes, symbols, entity rules, changing features, etc. Based on this, features are classified into three categories according to their changing features to make sure that proper quality inspection method will be applied to certain features. The three categories are as follows: low changing speed, fast changing speed with regulations, fast changing speed without regulations. At the same time, rules of each feature and its relationships with some other features are analyzed, too, for all those changing speed and rules, relationships are the most important factors when design inspection methods for each kind of features. Secondly, the concept of inspection method based on entity rules and cartographic specifications are introduced.

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Haitao, Z. / Xuefang, L. / Xiaorong, G.: RESEARCH ON THE METHODS OF QUALITY INSPECTION FOR PUBLISHED CHARTS BASED ON ENTITY RULES AND CARTOGRAPHIC SPECIFICATIONS. 2013. Copernicus Publications.

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