[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-31365":3,"doc-seo-31365":27},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"file_id":15,"file_url":16,"file_type":17,"file_size":18,"view_count":4,"is_deleted":4,"is_public":19,"is_downloadable":19,"audit_status":19,"page_count":20,"language":21,"language_code":22,"table_of_contents":23,"faqs":24,"seo_title":13,"seo_description":14,"update_tm":25,"read_time":26},31365,962075006959,"Anda","https://ap-avatar.wpscdn.com/avatar/e0002397efbe92a78e?_k=1776741047341049297",7,"Healthcare","QR Code-based Digital Watermarking For Protecting Personal Information On CT-Scan Images","Rapid exchange of medical CT-scan images raises major concerns about protecting patient data security and privacy. This work proposes a robust digital watermarking scheme that embeds an encrypted QR-code watermark into CT images while preserving visual quality. The method combines DWT-SVD for embedding in high-frequency sub-bands with hybrid protection using RSA to secure the AES key and AES to encrypt the payload. A chaotic logistic map scrambles the QR data to strengthen resilience. Experiments report an average PSNR of 37.9 dB and strong robustness against noise, cropping, scaling, and JPEG compression.","cbCaiekqMAwyDYAs","https://ap.wps.com/l/cbCaiekqMAwyDYAs","pdf",585365,1,8,"English","en","# Introduction\n## Digital watermarking for medical images\n## QR code usage in watermarking\n## DWT-SVD embedding strategy\n## Visual cryptography and encryption framework","[{\"question\":\"How does the method protect the watermark information?\",\"answer\":\"The QR-code-based watermark is encrypted with AES, with the AES key secured by RSA, and the QR content is scrambled using a chaotic logistic map to strengthen confidentiality.\"}]",1779397238,20,{"code":4,"msg":28,"data":29},"ok",{"site_id":30,"language":22,"slug":31,"title":13,"keywords":32,"description":14,"schema_data":33,"social_meta":76,"head_meta":78,"extra_data":80,"updated_unix":25},105,"qr-code-based-digital-watermarking-for-protecting-personal-information-on-ct-scan-images","",{"@graph":34,"@context":75},[35,52,66],{"@type":36,"itemListElement":37},"BreadcrumbList",[38,42,46,49],{"item":39,"name":40,"@type":41,"position":19},"https://docshare.wps.com","Home","ListItem",{"item":43,"name":44,"@type":41,"position":45},"https://docshare.wps.com/document/","Document",2,{"item":47,"name":12,"@type":41,"position":48},"https://docshare.wps.com/document/healthcare/",3,{"item":50,"name":13,"@type":41,"position":51},"https://docshare.wps.com/document/qr-code-based-digital-watermarking-for-protecting-personal-information-on-ct-scan-images/31365/",4,{"url":50,"name":13,"@type":53,"author":54,"headline":13,"publisher":56,"fileFormat":59,"description":14,"dateModified":60,"datePublished":60,"encodingFormat":59,"isAccessibleForFree":61,"interactionStatistic":62},"DigitalDocument",{"name":9,"@type":55},"Person",{"url":39,"name":57,"@type":58},"DocShare","Organization","application/pdf","2026-05-21",true,{"@type":63,"interactionType":64,"userInteractionCount":4},"InteractionCounter",{"@type":65},"ViewAction",{"@type":67,"mainEntity":68},"FAQPage",[69],{"name":70,"@type":71,"acceptedAnswer":72},"How does the method protect the watermark information?","Question",{"text":73,"@type":74},"The QR-code-based watermark is encrypted with AES, with the AES key secured by RSA, and the QR content is scrambled using a chaotic logistic map to strengthen confidentiality.","Answer","https://schema.org",{"og:url":50,"og:type":77,"og:title":13,"og:site_name":57,"og:description":14},"article",{"robots":79,"canonical":50},"index,follow",{"doc_id":7,"site_id":30}]