{"id":{"repo_id":"nus","oai_identifier":"oai:scholarbank.nus.edu.sg:10635/136089"},"canonical_url":"https://search.dev.ndltd.org/etd/nus/oai:scholarbank.nus.edu.sg:10635/136089","repository":{"repo_id":"nus","name":"National University of Singapore","base_url":"https://scholarbank.nus.edu.sg/oai/request"},"display":{"title":"DEVELOPMENT OF OPTICAL IMAGE ENCRYPTION TECHNIQUES FOR INFORMATION SECURITY","abstract":"The wide spread use of networking and internet has led to remarkable research efforts in the area of information security. This thesis is to develop new techniques for optical image encryption, and to overcome some existing problems in conventional cryptosystems. Several works have been accomplished: (1) To develop nonlinear cryptosystems and enhance the security robustness in conventional DRPE technique. (2) To evaluate the security of asymmetric cryptosystems and develop corresponding improvement to the original cryptosystems. (3) To develop a new interference-based cryptosystem which would be able to resolved the silhouette problem. (4) To develop a nonlinear cryptosystem based on ghost imaging to enhance the security robustness in conventional ghost-imaging-based cryptosystem.","abstract_html":"The wide spread use of networking and internet has led to remarkable research efforts in the area of information security. This thesis is to develop new techniques for optical image encryption, and to overcome some existing problems in conventional cryptosystems. Several works have been accomplished: (1) To develop nonlinear cryptosystems and enhance the security robustness in conventional DRPE technique. (2) To evaluate the security of asymmetric cryptosystems and develop corresponding improvement to the original cryptosystems. (3) To develop a new interference-based cryptosystem which would be able to resolved the silhouette problem. (4) To develop a nonlinear cryptosystem based on ghost imaging to enhance the security robustness in conventional ghost-imaging-based cryptosystem.","abstract_has_math":false,"creators":["WANG YONG"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-01-16","date_published":"2017-01-16","updated_at":"2026-07-24T03:33:09Z","subjects":["Optical security and encryption, Fourier optics and signal processing, Photon counting, Computational imaging, Phase retrieval, Image processing"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["WANG YONG"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2017-01-16"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://scholarbank.nus.edu.sg/handle/10635/136089"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Optical security and encryption, Fourier optics and signal processing, Photon counting, Computational imaging, Phase retrieval, Image processing"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://scholarbank.nus.edu.sg/bitstreams/49e0cac7-5513-4eaf-b3ff-e621a6a86af9/download"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The wide spread use of networking and internet has led to remarkable research efforts in the area of information security. This thesis is to develop new techniques for optical image encryption, and to overcome some existing problems in conventional cryptosystems. Several works have been accomplished: (1) To develop nonlinear cryptosystems and enhance the security robustness in conventional DRPE technique. (2) To evaluate the security of asymmetric cryptosystems and develop corresponding improvement to the original cryptosystems. (3) To develop a new interference-based cryptosystem which would be able to resolved the silhouette problem. (4) To develop a nonlinear cryptosystem based on ghost imaging to enhance the security robustness in conventional ghost-imaging-based cryptosystem."]},{"key":"dc:format.checksum.md5","label":"Dc Format Checksum Md5","values":["482c980c7e05fb019f3cb8e5e9a73c2d","d929d489cb3bbe0b53592da8e401bc0a"]},{"key":"dc:title","label":"Title","values":["DEVELOPMENT OF OPTICAL IMAGE ENCRYPTION TECHNIQUES FOR INFORMATION SECURITY"]}]}],"canonical_facts":{"dc:creator":["WANG YONG"],"dc:date.issued":["2017-01-16"],"dc:description.abstract":["The wide spread use of networking and internet has led to remarkable research efforts in the area of information security. This thesis is to develop new techniques for optical image encryption, and to overcome some existing problems in conventional cryptosystems. Several works have been accomplished: (1) To develop nonlinear cryptosystems and enhance the security robustness in conventional DRPE technique. (2) To evaluate the security of asymmetric cryptosystems and develop corresponding improvement to the original cryptosystems. (3) To develop a new interference-based cryptosystem which would be able to resolved the silhouette problem. (4) To develop a nonlinear cryptosystem based on ghost imaging to enhance the security robustness in conventional ghost-imaging-based cryptosystem."],"dc:format.checksum.md5":["482c980c7e05fb019f3cb8e5e9a73c2d","d929d489cb3bbe0b53592da8e401bc0a"],"dc:identifier.uri":["https://scholarbank.nus.edu.sg/bitstreams/49e0cac7-5513-4eaf-b3ff-e621a6a86af9/download"],"dc:relation.isreferencedby":["https://scholarbank.nus.edu.sg/handle/10635/136089"],"dc:subject":["Optical security and encryption, Fourier optics and signal processing, Photon counting, Computational imaging, Phase retrieval, Image processing"],"dc:title":["DEVELOPMENT OF OPTICAL IMAGE ENCRYPTION TECHNIQUES FOR INFORMATION SECURITY"],"dc:type":["Thesis"]},"updated_at":"2026-07-24T03:33:09Z"}