{"id":9897,"date":"2024-02-09T19:56:08","date_gmt":"2024-02-09T19:56:08","guid":{"rendered":"https:\/\/dailyai.com\/?p=9897"},"modified":"2024-02-10T12:09:07","modified_gmt":"2024-02-10T12:09:07","slug":"london-underground-deploys-ai-surveillance-experiment","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/02\/london-underground-deploys-ai-surveillance-experiment\/","title":{"rendered":"O metropolitano de Londres faz uma experi\u00eancia de vigil\u00e2ncia com IA"},"content":{"rendered":"<p><b>O metropolitano de Londres utilizou a tecnologia de vigil\u00e2ncia por IA num ensaio que durou um ano.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Entre outubro de 2022 e setembro de 2023, a Transport for London (TfL) testou 11 algoritmos distintos na esta\u00e7\u00e3o de metro de Willesden Green, localizada no sector noroeste da cidade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De acordo com documentos pormenorizados obtidos pelo <\/span><a href=\"https:\/\/www.wired.com\/story\/london-underground-ai-surveillance-documents\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">WIRED<\/span><\/a><span style=\"font-weight: 400;\">O julgamento envolveu a monitoriza\u00e7\u00e3o de milhares de movimentos, comportamentos e linguagem corporal dos passageiros para identificar potenciais actividades criminosas e riscos para a seguran\u00e7a.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O software de IA, associado a imagens de CCTV em direto (que \u00e9 o ramo da vis\u00e3o computacional (CV) da aprendizagem autom\u00e1tica), foi treinado para identificar comportamentos agressivos, armas, evas\u00e3o de tarifas e acidentes, como pessoas que possam cair nos carris.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A pol\u00edcia brit\u00e2nica j\u00e1 experimentou anteriormente a vigil\u00e2ncia por IA e continua a faz\u00ea-lo em alguns eventos p\u00fablicos, como aconteceu num <\/span><a href=\"https:\/\/dailyai.com\/pt\/2023\/11\/police-scanned-beyonce-concert-for-pedophiles-and-terrorists\/\"><span style=\"font-weight: 400;\">Concerto da Beyonc\u00e9 no ano passado<\/span><\/a>.<\/p>\n<p>No entanto,<span style=\"font-weight: 400;\">\u00a0\u00e9 <\/span><a href=\"https:\/\/dailyai.com\/pt\/2023\/10\/uk-politicians-speak-out-over-polices-use-of-facial-recognition\/\"><span style=\"font-weight: 400;\">frequentemente ineficazes,<\/span><\/a><span style=\"font-weight: 400;\"> e grupos de defesa dos direitos humanos criticaram a tecnologia, considerando-a uma inc\u00f3moda invas\u00e3o da privacidade e fonte de preconceito e discrimina\u00e7\u00e3o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A tecnologia de v\u00eddeo com IA tem um historial problem\u00e1tico, com <\/span><a href=\"https:\/\/dailyai.com\/pt\/2023\/10\/predictive-policing-underdelivers-on-its-goals-and-risks-discrimination\/\"><span style=\"font-weight: 400;\">numerosos projectos em todo o mundo com resultados insuficientes<\/span><\/a><span style=\"font-weight: 400;\"> e, por vezes, associam pessoas de pele mais escura a crimes que n\u00e3o cometeram.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Durante o per\u00edodo experimental da TfL, foram gerados cerca de 44 000 alertas, dos quais aproximadamente 19 000 foram transmitidos diretamente ao pessoal para interven\u00e7\u00e3o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os agentes participaram nos testes brandindo armas como catanas e pistolas no campo de vis\u00e3o do CCTV (embora durante as horas em que a esta\u00e7\u00e3o estava fechada), com o objetivo de treinar melhor a IA.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Eis a lista completa dos resultados:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Total de indica\u00e7\u00f5es<\/b><span style=\"font-weight: 400;\">: O sistema de IA emitiu mais de 44 000 alertas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas em tempo real para o pessoal da esta\u00e7\u00e3o<\/b><span style=\"font-weight: 400;\">: 19.000 foram entregues em tempo real ao pessoal da esta\u00e7\u00e3o para a\u00e7\u00e3o imediata.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas de evas\u00e3o tarif\u00e1ria<\/b><span style=\"font-weight: 400;\">: O sistema de IA gerou 26 000 alertas relacionados com actividades de evas\u00e3o tarif\u00e1ria.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas para cadeiras de rodas<\/b><span style=\"font-weight: 400;\">: Foram registados 59 alertas relativos a pessoas em cadeiras de rodas na esta\u00e7\u00e3o, que n\u00e3o disp\u00f5e de instala\u00e7\u00f5es adequadas para o acesso de cadeiras de rodas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas de linhas de seguran\u00e7a<\/b><span style=\"font-weight: 400;\">: Foram emitidas cerca de 2.200 multas por transposi\u00e7\u00e3o das linhas de seguran\u00e7a amarelas nas plataformas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas de borda da plataforma<\/b><span style=\"font-weight: 400;\">: O sistema gerou 39 alertas para pessoas que se inclinavam sobre a borda das plataformas dos comboios.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas de assento de banco alargado<\/b><span style=\"font-weight: 400;\">: Quase 2 000 alertas referiam-se a pessoas sentadas em bancos durante per\u00edodos prolongados, o que pode indicar v\u00e1rios problemas, incluindo o bem-estar dos passageiros ou riscos de seguran\u00e7a.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alertas de comportamento agressivo<\/b><span style=\"font-weight: 400;\">: Houve 66 alertas relacionados com comportamentos agressivos, embora o sistema de IA tenha tido dificuldade em detetar esses incidentes de forma fi\u00e1vel devido \u00e0 insufici\u00eancia de dados de forma\u00e7\u00e3o.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">No entanto, o sistema de IA n\u00e3o teve um bom desempenho em alguns cen\u00e1rios, conduzindo a resultados err\u00f3neos, tais como assinalar as crian\u00e7as que passam pelas barreiras dos bilhetes como potenciais evasores de tarifas.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Segundo a TfL, o objetivo final \u00e9 promover um tubo mais seguro e eficiente que proteja tanto o p\u00fablico como o pessoal.\u00a0<\/span><\/p>\n<p>A tecnologia de vigil\u00e2ncia por IA n\u00e3o \u00e9 intrinsecamente terr\u00edvel quando utilizada para a seguran\u00e7a p\u00fablica, mas uma vez que a tecnologia existe, mant\u00ea-la sob controlo \u00e9 uma tarefa complicada.<\/p>\n<p>J\u00e1 existem provas de <a href=\"https:\/\/dailyai.com\/pt\/2023\/10\/evidence-of-ai-misuse-unearthed-in-the-uk-public-sector\/\">Utiliza\u00e7\u00e3o abusiva da IA no sector p\u00fablico do Reino Unido<\/a>e <a href=\"https:\/\/dailyai.com\/pt\/2023\/11\/ai-models-in-the-public-sector-are-we-heading-towards-an-algocracy\/\">esc\u00e2ndalos noutros pa\u00edses<\/a> indicam que este \u00e9 um terreno escorregadio quando n\u00e3o \u00e9 tratado com o m\u00e1ximo cuidado.<\/p>","protected":false},"excerpt":{"rendered":"<p>O metro de Londres utilizou tecnologia de vigil\u00e2ncia por IA num ensaio de um ano.  De outubro de 2022 a setembro de 2023, a Transport for London (TfL) testou 11 algoritmos distintos na esta\u00e7\u00e3o de metr\u00f4 Willesden Green, localizada no setor noroeste da cidade.  De acordo com documentos detalhados obtidos pela WIRED, o teste envolveu o monitoramento de milhares de movimentos, comportamentos e linguagem corporal dos passageiros para identificar potenciais atividades criminosas e riscos \u00e0 seguran\u00e7a.  O software de IA, associado a imagens de CCTV em direto (que \u00e9 o ramo de vis\u00e3o computacional (CV) da aprendizagem autom\u00e1tica), foi treinado para identificar comportamentos agressivos, armas, evas\u00e3o de tarifas e acidentes, como pessoas potencialmente<\/p>","protected":false},"author":2,"featured_media":9898,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[108],"class_list":["post-9897","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-computer-vision-cv"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>London Underground deploys AI surveillance experiment | DailyAI<\/title>\n<meta name=\"description\" content=\"The London Underground employed AI surveillance technology in a year-long trial.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/pt\/2024\/02\/london-underground-deploys-ai-surveillance-experiment\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"London Underground deploys AI surveillance experiment | DailyAI\" \/>\n<meta property=\"og:description\" content=\"The London Underground employed AI surveillance technology in a year-long trial.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/pt\/2024\/02\/london-underground-deploys-ai-surveillance-experiment\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-09T19:56:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-10T12:09:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/02\/shutterstock_151196600.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"691\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:site\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/02\\\/london-underground-deploys-ai-surveillance-experiment\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/02\\\/london-underground-deploys-ai-surveillance-experiment\\\/\"},\"author\":{\"name\":\"Sam Jeans\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/#\\\/schema\\\/person\\\/711e81f945549438e8bbc579efdeb3c9\"},\"headline\":\"London Underground deploys AI surveillance experiment\",\"datePublished\":\"2024-02-09T19:56:08+00:00\",\"dateModified\":\"2024-02-10T12:09:07+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/02\\\/london-underground-deploys-ai-surveillance-experiment\\\/\"},\"wordCount\":485,\"publisher\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/02\\\/london-underground-deploys-ai-surveillance-experiment\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dailyai.com\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/shutterstock_151196600.jpg\",\"keywords\":[\"Computer vision (CV)\"],\"articleSection\":[\"Ethics &amp; 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