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The method focuses on improving text region identification by evaluating contrast characteristics to verify and refine candidate locations. The work targets robustness across varying visual conditions typical of real-world scenes and video data, aiming to increase the reliability of text localization before downstream recognition tasks.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/localizatlon-verification-scheme-for-finding-text-in-images-and-video-frames-based-on-contrast-index/126481/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/localizatlon-verification-scheme-for-finding-text-in-images-and-video-frames-based-on-contrast-index/126481.png","ImageObject",300,407,{"name":92,"@type":93},"Ophelia","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-23","2026-08-05",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What problem does the report address?","Question",{"text":112,"@type":113},"It addresses locating text regions in images and video frames by verifying candidate text locations to improve detection reliability.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What is the key method used for localization verification?",{"text":117,"@type":113},"The approach is based on a contrast index that evaluates visual contrast properties to verify and refine where text is likely located.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the scheme relate to video frames?",{"text":121,"@type":113},"It applies the localization verification process to video frames so text can be detected consistently across temporal visual variations.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},126481,1785905290,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":66,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":143},962084925290,"https://ap-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45","R E P O R T  \nR E S E A R C H  \nI D I A P  \n􀀀 ✁ ✄ ✆ ✞ ✆ ✡ ✆ ✌ ✎ ✑ ✑ ✔ ✕ ✗ ✑ ✑ ✔✛ ✜ 􀀀 ✁ ✆ ✔ ✑ ✑ ✞ \\# ✔ ✁ & ✔ ( * ✆ ✞ . ✞ & ✞ ✔ ✑ ✑ ✔ 0 ✔ * & ✔ 2 ✆ ✞ 3 ✔ 􀀏 4 0 5 7 8 􀀏✕ ✎ * ✆ ✞ \\# ✁ \u003C 􀀏 = ✎ ✑ ✎ ✞ ✄ 􀀏 > ✡ ✞ ✄ ✄ ✔  \n✆ @ ✑ @ 2 A ✗ ✁ ✔ +41􀀀27􀀀721 77 11 ✆ @ ✑ @ & ✗ 2 ✞✔ ✡ * +41􀀀27􀀀721 77 12 ✎ ✛ * C @ ✑ C E G HIG JK ILK JN LOL K P Q HS ✞ ✁ ✆ ✔ * ✁ ✔ ✆ SJ JP T U U VVV Q LOL K P Q HS  \nW XY [] ^ _a ]c_Yf gi kl_n_ []c_Y f q [ rk uk nY l x_fy_f { } k ⑧ c _f  \n❶ u ] { k ❹ ] fy i_y kY xl ] uk ❹❽ ] ❹ ky Y f ❿ Yfc l ] ❹ c ❶ fy k ➂ k fy kfc x k ]c ➆ lk ❹ ] fy ➇ ][ r_fk X k ] lf_f { ➇ kcr Yy ❹  \n➈ ➉ ➋ ➍ ➎ ➐ ➒ ➓ ¡ ➎ ➉ ➎ ↕ ➛ ¡ ➉ ➎ ➝ ➟ ➉ « ➡ ➢ ↕ ➍ ➧ ¡ ➩  \n➫ ➈ ➫ ➭ ¶  \n➳ ➵ ➳ » ➻ ➼ ➽ ➽ ¿ ➚ ➪ ➹ ➘  \n➴ ➷➬ ➘ ¿ ¿ ➚  \n CORE  Metadata, citation and similar [papers at core.ac.uk](papers at core.ac.uk)   Provided by Infoscience- École polytechnique fédérale de Lausanne   \n􀀀 ✁ ✄ ✄ ✝ ✟ ✡ ☞ ✍ ✟ ✍ ✑ ✓ ✍ ✟ ✑ ✓ ✍ ☞ ✍ ✘ ✚ ✜ ✣ ✜ \" $ & ( * +  \n- ./ 1 3 5 7 9 3: 7 / = > @ BD 7 G 7 1 3: 7 / = I 1 KB LB G / D P 7 = R 7 = SUB V: 7 = XL 3 SB \\ 3 = R @ 7 RB / PD 3 LB \\ a 3 \\ BR / =  \ne / = : D 3 \\ : X = RB hB = RB = : PB 3: iD B \\ 3 = R k 3 1 K 7 = B  \n.B 3 D = 7 = S k B: K / R \\  \n✣ ✁ ✡ ✝ no p ✓ ✍ n ✁ n ☞ q ✍ ✁ n ( r ✁ ✟ ✑ s ☞ ✝ t ✍ u  \n✜ ✣ ✜ \"  \nvwx yz z }  \n~ ⑧ ⑩ ❶ ❷ ⑧ ❸ ❹ ❻ ❼ ❽ ❿ ➀ ❼ ➂ ➃ ➃ ➆ ➀ ➈ ➀ ➃ ❼ ➊ ➈ ➋ ➊ ❼ ➊ ➃ ❼ ➂ ❽ ➎ ➂ ➎ ➏ ➂ ➋ ➊ ❽ ➑ ➊ ➔ ❻ ➊ ➎ ➃ ➊ ➑ ➂ ➑ ➀ ➃ ❽ ❿ £ ↕ ➊ ¥ ❼ ➀ ➑ § ➝ ➋ ❻ ➊ ❼ ❽ ❼ ➆ ➊ ➏ ➀ ➈ ➂ ➊ ❼ «❽ ➢ ➑ ➂ ➥ ➊ ➑ ➀ ➎ ➋ ➃ ❽ ↕ ❽ ➈ ➑ ➀ ➑ ➨ ➊ ↕ ↕ ➀ ➑ ❼ ❽ ❼ ➆ ➊ ➃ ❽ ❿ £ ↕ ➊ ¥ ➂ ❼ « ❽ ➢ ❼ ➆ ➊ ➭ ➀ ➃ § ➲ ➈ ❽ ❻ ➎ ➋ ➳ ➵ ➎ ❼ ➆ ➂ ➑ £ ➀ £ ➊ ➈ ➨ ➊ ➀ ➋ ➋ ➈ ➊ ➑ ➑❼ ➆ ➂ ➑ £ ➈ ❽ ➭ ↕ ➊ ❿ ➭ « £ ➈ ❽ £ ❽ ➑ ➂ ➎ ➲ ➀ ↕ ❽ ➃ ➀ ↕ ➂ ➥ ➀ ❼ ➂ ❽ ➎ ➻ ➏ ➊ ➈ ➂ ➼ ➃ ➀ ❼ ➂ ❽ ➎ ➑ ➃ ➆ ➊ ❿ ➊ ➳ ➽ ➀ ➎ ➋ ➂ ➋ ➀ ❼ ➊ ❼ ➊ ¥ ❼ ➈ ➊ ➲ ➂ ❽ ➎ ➑ ➀ ➈ ➊ ➼ ➈ ➑ ❼↕ ❽ ➃ ➀ ↕ ➂ ➥ ➊ ➋ ➭ « ❻ ➑ ➂ ➎ ➲ ➀ ➢➀ ➑ ❼ ➀ ↕ ➲ ❽ ➈ ➂ ❼ ➆ ❿ ➨ ➂ ❼ ➆ ➀ ➏ ➊ ➈ « ↕ ❽ ➨ ➈ ➊➪ ➊ ➃ ❼ ➂ ❽ ➎ ➈ ➀ ❼ ➊ ➝ ➨ ➆ ➂ ➃ ➆ ➊ ➎ ➀ ➭ ↕ ➊ ➑ ❼ ➆ ➊ ➃ ➆ ➀ ➈ ➀ ➃ ❼ ➊ ➈➑ ➂ ➥ ➊ ➎ ❽ ➈ ❿ ➀ ↕ ➂ ➥ ➀ ❼ ➂ ❽ ➎ ➳ ➽ ❽ ➎ ❼ ➈ ➀ ➑ ❼ ➂ ➎ ➋ ➊ £ ➊ ➎ ➋ ➊ ➎ ❼ ➢➊ ➀ ❼ ❻ ➈ ➊ ➑ ➀ ➈ ➊ ❼ ➆ ➊ ➎ £ ➈ ❽ £ ❽ ➑ ➊ ➋ ➢❽ ➈ ❼ ➈ ➀ ➂ ➎ ➂ ➎ ➲ ❿ ➀ ➃ ➆ ➂ ➎ ➊ ↕ ➊ ➀ ➈ ➎ ➂ ➎ ➲❼ ❽ ❽ ↕ ➑ ➂ ➎ ❽ ➈ ➋ ➊ ➈ ❼ ❽ ➏ ➊ ➈ ➂ ➢« ❼ ➆ ➊ ❼ ➊ ¥ ❼ ➈ ➊ ➲ ➂ ❽ ➎ ➑ ➳ ➱➨ ❽ § ➂ ➎ ➋ ➑ ❽ ➢ ❿ ➀ ➃ ➆ ➂ ➎ ➊ ↕ ➊ ➀ ➈ ➎ ➂ ➎ ➲ ❼ ❽ ❽ ↕ ➑ ➝ ❿ ❻ ↕ ❼ ➂ ↕ ➀« ➊ ➈ £ ➊ ➈ ➃ ➊ £ ❼ ➈ ❽ ➎ ➑➀ ➎ ➋ ➑ ❻ £ £ ❽ ➈ ❼ ➏ ➊ ➃ ❼ ❽ ➈ ❿ ➀ ➃ ➆ ➂ ➎ ➊ ➑ ➝ ➀ ➈ ➊ ➃ ❽ ❿ £ ➀ ➈ ➊ ➋ ➭ ➀ ➑ ➊ ➋ ❽ ➎ ➢❽ ❻ ➈ ➋ ➂ ✃➊ ➈ ➊ ➎ ❼ ➢➊ ➀ ❼ ❻ ➈ ➊ ➑ ➂ ➎ ❼ ➆ ➊ ➏ ➊ ➈ ➂ ➼ ➃ ➀ ❼ ➂ ❽ ➎❼ ➀ ➑ § ➳ ➱ ➆ ➂ ➑ ➑ ➃ ➆ ➊ ❿ ➊ £ ➈ ❽ ➏ ➂ ➋ ➊ ➑ ➢➀ ➑ ❼ ❼ ➊ ¥ ❼ ➋ ➊ ❼ ➊ ➃ ❼ ➂ ❽ ➎ ➂ ➎ ➂ ❿ ➀ ➲ ➊ ➑ ➀ ➎ ➋ ➏ ➂ ➋ ➊ ❽ ➑ ➨ ➂ ❼ ➆ ➀ ↕ ❽ ➨ ➃ ❽ ❿ £ ❻ ❼ ➀ ❼ ➂ ❽ ➎ ➃ ❽ ➑ ❼ ➝➃ ❽ ❿ £ ➀ ➈ ➂ ➎ ➲ ➨ ➂ ❼ ➆ ❼ ➈ ➀ ➋ ➂ ❼ ➂ ❽ ➎ ➀ ↕ ❿ ➊ ❼ ➆ ❽ ➋ ➑ ➳  \n􀀀 ✁ 􀀀 ☎ ✝ ✟ ✡ ✡ z } ✌ ✎ y ✑  \n✒ ✓ ✔✖ ✘ ✚ ✜ ✣ ✖ \\# ✚ ✔  \n% & ( * + ( * / 0 2 4 + 5 6 8 : * = 6 + 5 = 2 5 2 * 2 0 2 4 + = ( 5 + E = ( H 2 ( 5 I + * I = + K2 : * 2 4 M 4 I + O 8 = I + 2 8 * & 6 2 * = P + E * I 2 P * = & ( & R 5 + 4 PI = S * = K + R+ 2 * 8 I + 4 * V 2 * 2 I + I + : + K2 ( * * & * V + 4 8 0 W + P * 6 2 * + I = 2 : 4 [ = 6 2 H + 4 ] K = 5 + & ] + * P _ ❵ _ b V + * dS = P 2 : : & e: + K + : R+ 2 * 8 I + 4 * V 2 * 2 I + + E * I 2 P * + 5 = ( = 6 2 H + 4 & I K = 5 + & = ( P: 8 5 + 6 + 2 4 8 I + 4 & R P & : & I j ✑ k ] * + E * 8 I + j lk ] & I 4 V 2 S + j mk_ n: * V & 8 HV * V + 4 + R+ 2 * 8 I + 4 P 2 ( + 2 4 = : d 0 + + E * I 2 P * + 5 ] * V + d 5 & ( & * H = K + 2 P: + 2 I = 5 + 2 & R * V + = 6 2 H + P & ( * + ( * _sE * I 2 P * = ( H 6 & I + 5 + 4 PI = S * = K + R+ 2 * 8 I + 4 2 ( 5 V = HV + I : + K + : + ( * = * = + 4 ] R& I + E 2 6 S: + * + E * j uk & I V 8 6 2 ( R2 P + 4 jv k ] V 2 4 2 * * I 2 P * + 5 6 & I + 2 ( 5 6 & I + I + 4 + 2 IPV = ( * + I + 4 * I + P + ( * : d_ b+ E * + 6 0 + 5 5 + 5 = ( = 6 2 H + 4 2 ( 5 K = 5 + & ] + 4 S + P = 2 :: d P 2 S * = & ( 4 ] SI & K = 5 + 0 I = + R 2 ( 5 = 6 S & I * 2 ( * P & ( * + ( * = ( R& I 6 2 * = & (] 4 8 PV 2 4 * V + ( 2 6 + & R S: 2d + I 4 & I 4 S + 2 M + I 4 ] * V +* = * : + ] : & P 2 * = & ( 2 ( 5 5 2 * + & R 2 ( + K + ( * + * P _ b V + 4 + * + E * P 2 ( 0 + P & ( 4 = 5 + I + 5 2 4 2 S & e + IR8 : R+ 2 * 8 I + [ M + de & I 5 ❵ I + 4 & 8 IP + ","cbCainW6YhZMtlef","https://ap.wps.com/l/cbCainW6YhZMtlef","pdf",571016,17,"English","[{\"question\":\"What problem does the report address?\",\"answer\":\"It addresses locating text regions in images and video frames by verifying candidate text locations to improve detection reliability.\"},{\"question\":\"What is the key method used for localization verification?\",\"answer\":\"The approach is based on a contrast index that evaluates visual contrast properties to verify and refine where text is likely located.\"},{\"question\":\"How does the scheme relate to video frames?\",\"answer\":\"It applies the localization verification process to video frames so text can be detected consistently across temporal visual variations.\"}]","Localizatlon Verification Scheme for Finding Text in Images and Video Frames Based on Contrast Index | PDF",43]