Accession Number : ADA119220

Title :   White-Light Optical Information Processing and Holography.

Descriptive Note : Annual rept. 15 Feb 81-14 Feb 82,


Personal Author(s) : Yu,Francis T S

PDF Url : ADA119220

Report Date : 03 May 1982

Pagination or Media Count : 50

Abstract : The first phase of our research program on white-light optical information processing and holography has been completed. In this period, we have synthesized an optical information processing system, which permits complex spatial filtering with a broad band light source. The application of this technique of optical processing with incoherent source to smeared image deblurring was carried out. Since the use of white-light source, we have extended to color image deblurring. We have also developed a new technique for image subtraction with encoded extended incoherent source. Color image subtraction with the source encoding of two narrow spectral incoherent sources has also been demonstrated. As compared with the coherent optical processing technique, we had shown that the incoherent source techniques provides better image quality, and very low coherent artifact noise. We have also shown that the incoherent optical processing system is generally economical, versatile, and easier to maintain. We have also, in this period, investigated the spatial and temporal coherence requirements for the partially coherent processing technique. Several significant results for image deblurring and image subtraction were obtained. For more efficient utilization of an extended incoherent source, a source encoding technique was developed. We have shown that, since the spatial coherence requirement is dependent upon the processing operation, a strict coherence requirement may not be needed for some optical processing operations. Thus, a reduce coherence requirement may be used for a specific processing operation. (Author)

Descriptors :   *Optical processing, *Image processing, *Information processing, *Holography, *White light, Coherence, Requirements, Incoherence, Synthesis, Broadband, Light sources, Colors, Focusing, Optical data, Spatial filtering

Subject Categories : Holography

Distribution Statement : APPROVED FOR PUBLIC RELEASE