虚拟世界的建造过程中，获取不规则物体的纹理非常重要.针对数字文物保存与展示的要求，提出了一种基于物体单色几何模型及在其周围环绕拍摄的照片序列来获取不规则物体圆柱纹理的算法.该算法分为投影变换、变形和拼接等步骤，通过将物体照片序列上的色彩映射到圆柱贴图面上来获得该物体的纹理.该算法具有对原始照片质量要求低和允许运行时进行编辑等优点

In the process of building virtual worlds, it is very important to get the textures of irregular objects. Many texture acquirement techniques have been proposed in recent years. However, suffering from costly equipment and the ambiguity of texture presentation, these currently available approaches cannot meet the requirements of the conservation and presentation of digital heritages. To overcome these problems, a new algorithm on generating cylindrical textures of irregular objects is presented in this paper. Based on the homochromatic geometric models of objects and the photo sequences shot around them, the algorithm generates the textures of irregular objects by transferring the color information of the photo sequences to the cylindrical texture maps. It consists of three steps: first, building the mapping relations between the pixels on the photos and the pixels on the texture map by projective transformation, second, acquiring partial textures from respective photos and at last, combining these partial textures into integrated one by mosaicing. The algorithm is runtime-controllable and has low quality requirement of source photos. It has been applied to the Digital Rebuilding and Restoration System of Dunhuang Culture Relics and gets good results.