The Designing and Mapmaking of the Image-wall-maps of Xinjiang
ISBN 978-85-88783-11-9
Authors
1He, Z.
1WUHAN UNVIUERSITY Email: zongyihe56@yahoo.com
Abstract
A series of Image-wall-maps of Xinjiang was produced by using remote sensing data in the first time in the history of Xinjiang. This paper discusses the design map principles, format and layout design, content design, symbols and annotation design, and processing of image data and vector data. The key technology of processing vector and image data were focused on during the production of the map. The Image-wall-maps of Xinjiang was used remote sensing images, digital mapping and electronic publishing and other high-tech, complemented by avant-garde design concept to produce newest high-quality image maps in short time. On the format, a standard-sized sheet was chosen for counties, two sheets or more for larger cities. On layout, the outer contour was decorated with lace for artistic feature of map. Organization, company, transportation networks, place name and river name information were expressed on the map, which are closely related to economic, political and achievements that can reflect the recent major changes in the city of Xinjiang. In designing map symbol, point symbol was used mainly, because it can not represent the attribute information and exact location for the object, non-proportional symbol will not cover the surface features to affect the expression of other factors. On symbol colour, because the tone of the remote sensing images used image map was blue-green, most of map symbols were adopted blue white symbol in order to let the symbol and image has a better transition. Font used in traditional map does not apply to image maps, so more bold, Founder and other quasi-circular Simplified coarse, larger font were used in image maps annotation design. Image data processing made the unity of the tone from different sources. Levels, brightness/contrast were used mainly for adjusting the brightness of the image. Color balance, hue/saturation were used for adjusting the color of the image in the Photoshop. Adjusting the image brightness and color components made all the images consistent tone, and accurately reflected the green status, but also lead to river image too dark, need to be locally adjusted. In adjusting the hue of the waters, not only the "pen tool" in Photoshop was used for painting boundary line through the waters to extract the corresponding planar surfaces, but also "Magic Wand" in Photoshop was used for selecting a large area under the waters and then color was assigned. The key technology of the vector data processing: the Spatial Adjustment or Georeference in ArcGIS were used for existing vector data with .shp, to be found the same points on image, and through the affine transforms to make vector data matching image. Then .dxf data format in AutoCAD was taken as a standard of data format conversion, converting the data from the original format into .cdr format in CorelDRAW. Firstly Bezier Curves in the CorelDRAW was used for drawing center line according to the road, copy into two lines, set the properties in accordance with the designed color and the actual width, then connectivity was achieved by superimposing layers of different roads. After that map symbols were configured in the corresponding position in accordance with the converted vector data information, and finally map annotation was configured in the best position according to the principles of configuration. Well-designed and mapmaking of the Image-wall-maps of Xinjiang made up the blank in the history of Image-wall-maps in Xinjiang, provided scientific reference for decision-making at all levels of management, emergency relief , and provided better geographic information services for people planning travel, dining, shopping, self-driving and inquiries. Image-wall-maps of Xinjiang published provided a useful reference method of digital mapmaking image map for other areas.
Keywords
Image-wall-maps; Map Design; Mapmaking