(2) the need to correct the image is added to the ArcMap, you will find the tool in the tool bar Georeferncing be activated. Digitizing, we know the coordinates of the point is km grid intersection, we can start with the uniform take several points. Use the tool to scan map is accurate to find a control point click, then right-click the mouse to enter the actual coordinates of the location of the point. (Added: image binary, or can not be digitized) right click on the image, select Properties in election symbolgy label in the show selected classified Shp file in ArcCatalog to create a new (sub-layers to build a few, a little, line, polygon, multi-point four types), with image and SHP files added to ArcMap, the SHP file for editing, then you can Before using arcscan in tools toolbar the Extension (extension) the option will arcscan marked as available! Then arcscan the tool in the Tools dialog box settings are saved parameters and save the correction raster image formats, save location and other information, cubic convolution interpolation (continuous data), choose the second, determined to generate a new raster data, and then loaded into key to move the map to find a suitable location click of the mouse, a point feature is created successfully, drawing process the right mouse button pop-up menu of the ‘sketch’, the newly created editing and other operations, tool, found on the map the village boundaries in the position to determine the starting point of the line, click the mouse, then move the mouse to the appropriate position (the inflection point of the line early) and then click the mouse to add an inflection point , In turn operate along the village boundaries in the direction of scanning lines, double-click the mouse to complete the creation of a line, edit Engineering, modify the line, add the right sketch menu, strikethrough inflection point operations, withdrawal point tracking tool to delineate the polygon to complete the creation of the polygon, enter the edit mode, find you want to create the position of the polygon, and then use the’ tool in selected online, click, and then move the mouse you can see a thin line along the direction of the selected line with the mouse, if you arrive at the intersection of the two lines can no longer along the mouse tracking, you want online and then click of the mouse, and then move along the direction of the selected line, And finally arrive at the starting point and then double-click the mouse will automatically close the line to complete the creation of a polygon, Source.