Different objects may have the same density; 
2) The same object may have different densities: 
3) False-color imagery are different from natural 
color imagery and black and white imagery, 
therefore, the people who are familiar with the 
black and white imagery may not be familiar 
with the false-color imagery. The false-colors 
and the densities are related by its own 
function. It is impossible to assign them 
arbitrary. 
Having got these ideas in mind, we can apply this 
technology, especially, in the field where the 
objects can not be well interpreted from the imagery 
processed by other methods. In addition, the main 
advantage of this technology is able to distinguish 
faint density difference. Therefore, this technology 
may be a new means for detecting the object which is 
very difficult with other means. It can be very 
useful in medical diagnosing, Biology. Genetics and 
any other subjects which need image information for 
detecting, interpreting and analyzing targets 
required. A broad application range and economical 
benefit can be expected. 
We will show the false-color images during the 
presentation. We are willing to cooperate with the 
people who are interested in this technology in the 
medical field. We are sure that we can further 
improve it and make it easier to operate and get 
better results. 
REFERENCES 
[1] Hu Ruiming, Yang Sugin ( 1988 ): Applications of 
false-coloring of black and white imagery by 
Optical Density Encoding Techniques. 
Internationsal Archives of Photogrammetry and 
Remote-Sensing, pp. 230 — 237 
F.T.S.Yu: Generating false-color composites with 
a white-light opyical processor. PE & RS, 1986, 
No.-3, pp. 367 — 371 
(3] Pons et al: Optical Pseudocoloring Technique to 
Improve Directional Information, J.Optics (Paris) 
, Vol. 15, No. 2, 1984. pp. 65 — 87 
[4] Santamaria, L. et al: J. Opt., Vol. 10, No. 15, 
1979 
[5] Guo Lurong et al: Phase False-coloring Modulated 
by Density Encoding, Journal of Optics, Vol. 4, 
No. 2, 1984, Academia Sinica