[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-31392":3,"doc-seo-31392":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},31392,13056703019662,"Evangeline","https://ap-avatar.wpscdn.com/avatar/be000253a8e92610077?_k=1778726343310543188",7,"Healthcare","QR Code Based Digital Watermarking For Protecting Personal Information On CT Scan Images","Digital watermarking safeguards patient privacy as medical CT-Scan images are rapidly exchanged over networks. The work proposes a robust scheme that embeds encrypted QR-based watermark data into CT images using DWT-SVD, targeting high-frequency sub-bands for imperceptibility. The watermark is encrypted with AES, with the AES key protected by RSA, then converted into a QR code and scrambled via a chaotic logistic map. Experiments show high image quality (average PSNR 37.9 dB) and strong resistance to noise, cropping, scaling, and JPEG compression.","cbCaitiSekF5fOEv","https://ap.wps.com/l/cbCaitiSekF5fOEv","pdf",585229,1,8,"English","en","# Introduction\n## Privacy and Security Challenges in CT-Scan Image Sharing\n## Role of Digital Watermarking for Integrity and Authentication\n## QR Codes for Watermark Data Capacity\n## Proposed DWT-SVD, Encryption, and Robust Embedding Concepts\n## High-Frequency Sub-band Embedding Strategy\n## Visual Cryptography Integration","[{\"question\":\"What problem does the proposed method address for CT-Scan images?\",\"answer\":\"It addresses risks to patient data security and privacy caused by unauthorized access, leaks, hacking, or misuse of sensitive CT-Scan image information.\"},{\"question\":\"How is the watermark embedded into the CT-Scan image?\",\"answer\":\"The method uses DWT-SVD to decompose the image and embeds the watermark into the high-frequency sub-bands, aiming to reduce perceptible visual impact while supporting reliable extraction.\"},{\"question\":\"How does the approach protect confidentiality and resist common attacks?\",\"answer\":\"Confidentiality is achieved by encrypting the watermark with AES and protecting the AES key using RSA, then representing the data as a QR code scrambled with a chaotic logistic map; robustness is demonstrated against noise addition, cropping, scaling, and JPEG compression.\"}]",1779397383,20,{"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":84,"head_meta":86,"extra_data":88,"updated_unix":25},105,"qr-code-based-digital-watermarking-for-protecting-personal-information-on-ct-scan-images","",{"@graph":34,"@context":83},[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/31392/",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",[69,75,79],{"name":70,"@type":71,"acceptedAnswer":72},"What problem does the proposed method address for CT-Scan images?","Question",{"text":73,"@type":74},"It addresses risks to patient data security and privacy caused by unauthorized access, leaks, hacking, or misuse of sensitive CT-Scan image information.","Answer",{"name":76,"@type":71,"acceptedAnswer":77},"How is the watermark embedded into the CT-Scan image?",{"text":78,"@type":74},"The method uses DWT-SVD to decompose the image and embeds the watermark into the high-frequency sub-bands, aiming to reduce perceptible visual impact while supporting reliable extraction.",{"name":80,"@type":71,"acceptedAnswer":81},"How does the approach protect confidentiality and resist common attacks?",{"text":82,"@type":74},"Confidentiality is achieved by encrypting the watermark with AES and protecting the AES key using RSA, then representing the data as a QR code scrambled with a chaotic logistic map; robustness is demonstrated against noise addition, cropping, scaling, and JPEG compression.","https://schema.org",{"og:url":50,"og:type":85,"og:title":13,"og:site_name":57,"og:description":14},"article",{"robots":87,"canonical":50},"index,follow",{"doc_id":7,"site_id":30}]