The second number is the highest peak point for the 
  
in each node is the lowest valley point. 
segment. 
References 
1. 
10. 
11. 
12. 
13. 
14. 
Arcelli, Carlo and Gabriella Sanniti Di Baja, "On the Sequential 
Approach.to Medial Line Transformation," IEEE Transactions on 
Systems, Man, and Cybernetics, Vol. SMC-8, No. 2, February 
19783, pp. 139-144. 
Bachi, Roberto, "Geostatistical Analysis of Territories," Pro- 
ceedings of the 39th Session-Bulletin of the International 
Statistical Institute, Vienna, 1973. 
  
  
  
  
Bajcsy, R. and L.Lieberman, "Computer Description of Real Out- 
door Scenes," Proceedings of Second International Joint Con- 
ference on Pattern Recognition, Copenhagen, Denmark, August 
1974, pp. 174-179. 
Bajcsy, R. and L.Lieberman, "Texture Gradient as a Depth Cue,” 
Computer Graphics and Image Processing, Vol. 5, No. 1, 1976, 
pp. 52-67. 
Bartels, P., G.Bahr and G.Weid, "Cell Recognition from Line 
Scan Transition Probability Profiles," Acta Cytol., Vol. 13, 
1969, pp. 210-217. 
Box, J.E. and G.M.Jenkins, Time Series Analysis, Holden-Day, 
San Francisco, California, 1970 
  
  
  
  
Carlton, S.G. and O.Mitchell, "Image Segmentation Using Texture 
and Grey Level," Pattern Recognition and Image Processing 
Conference, Troy, New York, June 1977, pp. 387-391. 
  
Carlucci, L., "A Formal System for Texture Languages," Pattern 
Recognition, Vol. 4, 1972, pp. 53-72. 
Chen, P. and T.Pavlidis, "Segmentation by Texture Using a Co- 
occurrence Matrix and a Split-and-Merge Algorithm," Technical 
Report 237, Princeton University, Princeton, New Jersey, 
January 1978. 
Chien, Y.P. and K.S.Fu "Recognition of X-Ray Picture Patterns," 
IEEE Transactions on Systems, Man and Cybernetics, Vol. SMC- 
4, No. 2, March 1974, pp. 145-156. 
Conners, Richard W. and Charles A.Harlow, "Some Theoretical 
Considerations Concerning Texture Analysis of Radiographic 
Images," Proceedings of the 1976 IEEE Conference on 
Decision and Control, 1976 
  
  
Cutrona, L.Jj., E.N.Leith, C.J.Palermo, and L.J.Porcello, 
"Optical Data Processing and Filtering Systems," IRE 
Transactions on Information Theory, Vol. 15, No. 6, 
June 1969, pp. 386-400. 
Darling, E.M. and R.D. Joseph, "Pattern Recognition from 
Satellite Altitudes," IEEE Transactions on Systems, Man, 
and Cybernetics, Vol. SMC-4, March 1968, pp. 38-47. 
  
  
Davies, L., S.Johns, and J.K.Aggarwal, "Texture Analysis 
Using Generalized Co-occurrence Matrices," Pattern 
Recognition and Image Processing Conference, Chicago, 
Illinois, May 31 - Juné 2, 1978.