scholarly journals A DISCUSSION ON THE n-PLANE LINEAR COHERENT OPTICAL-PROCESSING SYSTEM (Ⅱ)

1993 ◽  
Vol 42 (9) ◽  
pp. 1431
Author(s):  
ZHAN DA-SAN
Keyword(s):  
Processing System ◽  
Optical Processing ◽  
Coherent Optical Processing

Pseudo-Color Coded Optical System Based on the Spatial Light Modulator and Charge-Coupled Device

2012 ◽  
Author(s):  
S. N. Zhao ◽  
H. Chang ◽  
J. Wei ◽  
Z. Wei
Keyword(s):  
Real Time ◽  
Optical System ◽  
Spatial Light Modulator ◽  
Processing System ◽  
Optical Processing ◽  
Gray Scale ◽  
Light Modulator ◽  
Time Modulation ◽  
Gray Scale Image ◽  
Pseudo Color

A new pseudo-color coded optical system based on the liquid crystal spatial light modulator (LC-SLM) and a digital camera (CCD) is proposed. The SLM is used to replace the holographic grating with gray-scale image information, a gray-scale image in real-time modulation methods is proposed by synthesizing phase hologram and Ronchi grating, combined with the 4f coherent optical processing system and spatial filtering. For the high resolution gray image processed with existing digital pseudo-color method, the color sensitivity is low, algorithm is very complex. For traditional optical pseudo-color method, the gray scale image needs chemical pretreatment. The process is complex and time-consuming, and the real-time modulation could not be achieved. Our new method has enhanced the flexibility and adaptability of the optical pseudo-color, and give full play to the high sensitivity, high-capacity, rich colors and other features of the optical processing mode. At the same time, it overcomes the disadvantages of pure optical system which could not perform real-time processing. Therefore, it can be widely used in the field of remote sensing, biomedical, environmental monitoring, public security and criminal investigation, etc.

Coherent optical processing: Another approach

1979 ◽  
Vol 15 (12) ◽  
pp. 1348-1362 ◽  
Author(s):  
B. Guenther ◽  
C. Christensen ◽  
J. Upatnieks
Keyword(s):  
Optical Processing ◽  
Coherent Optical Processing

scholarly journals THE USE OF COHERENT OPTICAL PROCESSING TECHNIQUES FOR THE AUTOMATIC SCREENING OF CERVICAL CYTOLOGIC SAMPLES

1974 ◽  
Vol 22 (7) ◽  
pp. 598-604 ◽  
Author(s):  
R. E. KOPP ◽  
J. LISA ◽  
J. MENDELSOHN ◽  
B. PERNICK ◽  
H. STONE ◽  
...  
Keyword(s):  
Optical Signal ◽  
Cell Diameter ◽  
Malignant Cells ◽  
Optical Processing ◽  
Isolated Cells ◽  
Model Studies ◽  
Processing Techniques ◽  
Coherent Optical Processing ◽  
Signal Processing Techniques ◽  
Nuclear Deoxyribonucleic Acid

Coherent optical signal processing techniques applied to the screening of exfoliated cytologic cervical samples were evaluated. The two-dimensional Fourier spectrum of some 80 isolated cells was obtained from high resolution cell photographs and recorded. Quantitative spectrum data were collected on a training set consisting of 15 categorized malignant cells taken from slides diagnosed as malignant and 10 categorized normal cells taken from slides diagnosed as normal. A variety of transform parameters were measured and certain combinations of them were found which separated completely the normal from malignant cells. Certain parameters were shown to be functionally related to the cell diameter, nuclear diameter and nuclear density. Other parameters were found which appear to be related to other cell features such as clumping of nuclear deoxyribonucleic acid. When they were used in combination with the previous parameters, they greatly enhanced the discriminatory capabilities. Computer model studies formed the basis for our experimental design and parameter selection and have validated much of our experimental results. Although the sample size to date is admittedly small, our results have been very encouraging.

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