Acta Geodaetica et Cartographica Sinica ›› 2017, Vol. 46 ›› Issue (3): 338-345.doi: 10.11947/j.AGCS.2017.20160467

Previous Articles     Next Articles

Automatic Texture Optimization for 3D Urban Reconstruction

LI Ming1,2, ZHANG Weilong1, FAN Dingyuan3   

  1. 1. State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    2. Collaborative Innovation Center for Geospatial Technology, Wuhan University, Wuhan 430079, China;
    3. Southwest Jiaotong University, Chengdu 610031, China
  • Received:2016-09-20 Revised:2017-02-10 Online:2017-03-20 Published:2017-04-11
  • Supported by:
    The National Key Research and Development Program of China(No. 2016YFB0502200);The National Natural Science Foundation of China(No. 41127901)

Abstract: In order to solve the problem of texture optimization in 3D city reconstruction by using multi-lens oblique images, the paper presents a method of seamless texture model reconstruction. At first, it corrects the radiation information of images by camera response functions and image dark channel. Then, according to the corresponding relevance between terrain triangular mesh surface model to image, implements occlusion detection by sparse triangulation method, and establishes the triangles' texture list of visible. Finally, combines with triangles' topology relationship in 3D triangular mesh surface model and means and variances of image, constructs a graph-cuts-based texture optimization algorithm under the framework of MRF(Markov random filed), to solve the discrete label problem of texture optimization selection and clustering, ensures the consistency of the adjacent triangles in texture mapping, achieves the seamless texture reconstruction of city. The experimental results verify the validity and superiority of our proposed method.

Key words: oblique image, triangular mesh surface model, occlusion detection, graph-cuts, texture optimization

CLC Number: