389 
  
  
  
  
  
  
-18 -5 5 1d 
Ss 
18 HORIZONTAL 
y 
12 
5 
-18 -5 5 id 
-18 FRONTAL 
y 
1C 
en 
  
  
SAGITTAL 
  
  
FRONT MANDIBULAR MOVEMENT 
Fig.9 Dividing one cycle of mastication into 20 periods, mean positions of mouth corner on each period were showed. 
  
= GUM 
  
  
  
ALL Stroke 
Fig.10 The mean distances of all strokes of each test food 
were showed. 
ZA KAMABOKO 
E KAMABOKO BIG 
  
E CARROT 
Ed GUMI-JELLY 
ES PEANUT 
   
  
COOKIE 
  
  
  
Fig.11 
  
FIRST Phase MIDDLE Phase LAST Phase 
  
  
B= GUM 
=@— KAMABOKO 
=de= KAMABOKO BIG 
—— CARAMEL 
=== CARROT 
—— GUMI-JELLY 
=dr= PEANUT 
—— OOOKIE 
  
  
With the progress of mastication, the mean distance 
in all test foods except for carrot and chewing gum. 
5. ACKNOWLEDGEMENTS 
This project was funded by Grant-in-Aid for Scientific Research (C) (The Ministry of Education, Science and Culture, Japan.) 
6. REFERENCE 
1) Murai, S., 1989. Analytical Photogrammetry, The Japan Society of Photogrammetry and Remote Sensing, Tokyo, pp149-155. 
2) Rogers, D.,F. and Adams, J. A., Mathematical Elements for Computer Graphics, McGraw-Hill, pp86-90. 
IAPRS, Vol. 30, Part 5W1, ISPRS Intercommission Workshop "From Pixels to Sequences", Zurich, March 22-24 1995