Design And Application Of Image Texture Symbols Based On Surface Texture Features

With the progress of society and the continuous development of science and technology,map,as an important carrier,has the function of information transmission and information simulation,and its form has been recognized by the broad masses of people.Maps transmit information through cartographic language,and map symbols,as a kind of cartographic language,play an irreplaceable role.The reader interprets the information it conveys according to the visual attributes of the map symbol.In the current thematic map,the small scale map uses solid color symbols,which we call "color texture",and the middle scale map uses solid color + regularly arranged elements as area symbols,we call it "symbol texture",which can achieve better distinguishing effect of figure attributes at present.However,if we still use the way of "symbol texture" to fill the area on the large-scale map,although it can be expressed well in semantics,the large area of solid color filling is too empty,which affects the beauty of the map as a whole.In the visual attributes of map symbols,in addition to color and structure,texture is a very important element,which not only gives people aesthetic enjoyment in its unique image form,but also enhances the aesthetic degree of the whole map.At the same time,it can also be given semantic information like color,which can reflect the spatial information of the objective world and transmit attribute information at the same time.Therefore,it is very necessary to use texture to extend the existing area symbols.However,so far,no one has systematically studied the design of texture symbols in maps.Therefore,we should explore a new set of rules and methods of texture area symbols,and construct a system of inheriting area symbols step by step from small scale to large scale,so as to enrich the semantics of the map without losing the original meaning of the map.So that the map in the full scale has a set of not only accurate transmission of information,but also maintain beautiful norms,is a very meaningful subject.Based on this,firstly,the related research contents such as texture and mapping are briefly introduced,the contents of the relevant research results are absorbed,and the rules for the application of texture itself in map making are made.Then,the classification,synthesis and a series of principles of image texture symbols are stipulated,and a set of texture making process is formed,which includes cutting and extracting the corresponding texture material from oil painting,image and photo.The steps of texture color clustering,skeleton extraction and texture synthesis are carried out to form image texture symbols with clear semantic meaning and rich aesthetic feeling,and at the same time,the vector map of administrative division of Guangdong Province is taken as the base map.Based on this,the area features are rendered to generate a map with image texture symbols.Finally,the effect is observed by rendering the above image,and compared with the original symbol system maps with different scales.Basically formed the thematic map in the large,medium and small scale different symbol rendering mode.The purpose of this paper is to propose an image texture symbol design method based on ground texture features,which can be used in the design of map symbols and provide a feasible method for computer-aided symbol design.