In visual pattern recognition, researchers often rely on standard test images obtained under fixed conditions because it is usually difficult to obtain images with all the desired characteristics. This practice can compromise an investigation because existing images may need major changes in optical parameters or the original scene may be unavailable. For most engineering applications, algorithms can only work well under certain conditions. New algorithms might require specifications not fully met by the existing data (patterns). Synthesized patterns, in which a computer fills these requirements, may be the answer to the problem, due to its advantages of low cost, easy specification, independence from environmental conditions, and realistic visualization of abstract ideas that stimulates creativity. Ray tracing--a computer graphics technique with optical correctness requiring a few numerical parameters--can be employed to devise a scene. Results are presented in the form of light intensity maps, convenient for pattern recognition algorithms. Once the algorithms under study are confirmed with the synthesized images, conditions can be specified for acquiring real-world images, thus reducing costly trial-and-error methods. This paper proposes a novel approach to generate cracks and potholes using "fractals" with "texture mapping." The results illustrate the practicality of the proposed approach in the design and implementation of pavement management systems.


  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 60-66
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00716516
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 24 1996 12:00AM