[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-194469-105":53,"doc-detail-194469-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","voloshynovskiy-pereira-pun","Voloshynovskiy-Pereira-Pun","","This document presents a comparison between a standard Peak Signal-to-Noise Ratio (PSNR) and a weighted Peak Signal-to-Noise Ratio (wPSNR) metric for image quality assessment. The data indicates that the wPSNR metric is generally closer to perceptual quality than the PSNR. The document provides three examples showing that for a stego-image with a consistent PSNR of 24.6dB, the wPSNR values increase significantly, ranging from 26.4dB to 29.3dB. This suggests that the wPSNR metric is more sensitive to subtle distortions that are noticeable by human perception, making it a potentially more accurate measure of image quality in steganography or other image processing applications. The presented data implies that while an image might have a low PSNR, its perceptual quality, as indicated by a higher wPSNR, could be superior. This approach is crucial for evaluating the effectiveness of steganalytic techniques and the quality of watermarked or embedded information within images without introducing visually perceptible artifacts.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/voloshynovskiy-pereira-pun/194469/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/voloshynovskiy-pereira-pun/194469.png","ImageObject",442,249,{"name":88,"@type":89},"Quinn","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-04","2026-09-03",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What is wPSNR and how does it compare to PSNR?","Question",{"text":108,"@type":109},"wPSNR, or weighted Peak Signal-to-Noise Ratio, is a metric that is presented as being closer to human perception than the standard PSNR. The document provides evidence that suggests wPSNR is a more accurate indicator of perceived image quality.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What does the provided data illustrate about PSNR and wPSNR?",{"text":113,"@type":109},"The data shows that for a stego-image with a constant PSNR of 24.6dB, the wPSNR values are consistently higher, ranging from 26.4dB to 29.3dB across different examples. This suggests that wPSNR can reveal perceptual quality differences not captured by PSNR.",{"name":115,"@type":106,"acceptedAnswer":116},"What are the implications of wPSNR being closer to perception?",{"text":117,"@type":109},"The implication is that wPSNR might be a better metric for evaluating image quality in applications like steganography, where subtle distortions that affect human perception are critical. It can help in assessing the imperceptibility of embedded information.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},194469,1791130781,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":79,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},962075114765,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","| The wPSNR is closer to perception than the PSNR: |  |\n| --- | --- |\n| stego-image PSNR 24 .6dB wPSNR 26 .4dB\u003Cbr>stego-image PSNR 24 .6dB wPSNR 27 .9dB\u003Cbr>stego-image PSNR 24 .6dB wPSNR 29 .3dB | |","cbCaifjYKOWdG2mp","https://ap.wps.com/l/cbCaifjYKOWdG2mp","pdf",929996,22,"English","# wPSNR vs. PSNR","[{\"question\":\"What is wPSNR and how does it compare to PSNR?\",\"answer\":\"wPSNR, or weighted Peak Signal-to-Noise Ratio, is a metric that is presented as being closer to human perception than the standard PSNR. The document provides evidence that suggests wPSNR is a more accurate indicator of perceived image quality.\"},{\"question\":\"What does the provided data illustrate about PSNR and wPSNR?\",\"answer\":\"The data shows that for a stego-image with a constant PSNR of 24.6dB, the wPSNR values are consistently higher, ranging from 26.4dB to 29.3dB across different examples. This suggests that wPSNR can reveal perceptual quality differences not captured by PSNR.\"},{\"question\":\"What are the implications of wPSNR being closer to perception?\",\"answer\":\"The implication is that wPSNR might be a better metric for evaluating image quality in applications like steganography, where subtle distortions that affect human perception are critical. It can help in assessing the imperceptibility of embedded information.\"}]","Voloshynovskiy-Pereira-Pun | PDF",1788439318,8]