%0 Journal Article
%T A New Method for Edge Enhancement and Its Application to Joint Transform Correlator<br>边缘增强新方法及在联合变换相关器中的应用
%A GE Hua-yong
%A BAI En-jian
%A <br>葛华勇
%A 白恩健
%J 光子学报
%D 2008
%I 
%X The coupling gain coefficient g was defined and deduced based on coupling theory, and the variant of coupling gain coefficient g for different TL and r was analyzed. A new optical system was proposed for image edge-enhancement. The back signal was used to amplify the edge signal,which has the advantages of high throughput efficiency and brightness. The optical system was designed and built, and the edge-enhanced image of hand bone was captured electronically by CCD camera. The principle of optical correlation was demonstrated, 3-D correlation distribution of letter E with and without edge-enhancement was simulated, and the discrimination capability Iac and the full-width at half maximum intensity (FWHM) were compared for two kinds of correlators. The analysis shows that edge-enhancement preprocessing can improve the performance of correlator effectively.
%K Two-wave mixing
%K Edge-enhancement
%K Joint transform correlator<br>二波耦合
%K 边缘增强
%K 联合相关器
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=7292697F2AA3D49BB030368A04B8826D&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=9CF7A0430CBB2DFD&sid=DA7B73AC3A57CF54&eid=23E2AE7BE4186237&journal_id=1004-4213&journal_name=光子学报&referenced_num=1&reference_num=9