Figure 12 Optional Circle measurement tool 
  
Figure 13 Surface plot of clear membrane 
3.0 HUMAN SKIN MEASUREMENT 
Measurement and analysis of human skin is somewhat similar 
in characteristics as thin skin membrane like Kapton, discussed 
in this paper. Some of the similarities are elastistity, and 
opacity. Research on skin imprint is described in (Robertson 
1998, 2000). This study covered areas of anti and post mortem 
marks related to Forensic applications. We all know that when 
pressure is applied to skin, an imprint mark will be made. We 
also know that over a period of time this mark will dissipate 
and the skin will return to normal. However at the instant of 
death the dispersion rate of the indention stops. It is also noted 
that pressure and time the object that causes the indention 
really does not affect the overall depth of the imprint. This 
opens a new area for our forensic study, by modeling the 
elasticity of skin we can calculate the dispersion or lapse rate of 
the skin returning to normal. This provides an ability to 
determine the time of death after the wound or imprint is made 
on the skin. The method described in this paper lends itself for 
this type of analysis, especially working with large number of 
subjects, skin types, to help provide a database for police 
agencies to draw from. Figure 14 displays an imprint mark on 
skin. Figure 15 shows the dot pattern and Figure 16 displays a 
plot of the skin imprint. 
  
Figure 14 Skin imprint lapse rate 
Figure 15 Dot pattern on skin 
  
Figure 16 Plot of skin imprint 
CONCLUSION 
Dot projection offers the ability to measure objects that would 
be difficult or impossible to achieve using a conventional 
targeting process. In addition the real time version provides for 
an opportunity to measure objects not only in a dynamic mode 
but also in areas of production and quality control where it can 
measure some type of surfaces faster than existing methods. 
The ability to quickly change the targets pattern size and 
surface coverage. From a productivity standpoint, the use of dot 
projection requires a minimum of preparation time 
282.