{"id":14312,"date":"2024-09-23T16:44:20","date_gmt":"2024-09-23T16:44:20","guid":{"rendered":"https:\/\/dailyai.com\/?p=14312"},"modified":"2024-09-24T08:54:06","modified_gmt":"2024-09-24T08:54:06","slug":"googles-open-buildings-project-maps-urban-expansion-across-the-global-south","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/09\/googles-open-buildings-project-maps-urban-expansion-across-the-global-south\/","title":{"rendered":"O projeto Open Buildings da Google mapeia a expans\u00e3o urbana no Sul Global"},"content":{"rendered":"<p><strong>A Google Research lan\u00e7ou o Open Buildings 2.5D Temporal Dataset, um projeto que acompanha as altera\u00e7\u00f5es de edif\u00edcios no Sul Global de 2016 a 2023.<\/strong><\/p>\n<p>Este conjunto de dados excecionalmente detalhado oferece uma vis\u00e3o din\u00e2mica da urbaniza\u00e7\u00e3o, ano a ano. Capta a constru\u00e7\u00e3o, o crescimento e a transforma\u00e7\u00e3o de edif\u00edcios em regi\u00f5es onde esses dados h\u00e1 muito s\u00e3o escassos ou inexistentes.<\/p>\n<p><span style=\"font-weight: 400;\">John Quinn, um engenheiro de software da Google Research, explicou <\/span><span style=\"font-weight: 400;\">porqu\u00ea <a href=\"https:\/\/research.google\/blog\/open-buildings-25d-temporal-dataset-tracks-building-changes-across-the-global-south\/\" target=\"_blank\" rel=\"noopener\">o projeto<\/a><\/span><span style=\"font-weight: 400;\"> \u00e9 importante: \"N\u00e3o saber onde est\u00e3o os edif\u00edcios \u00e9 um grande problema por muitas raz\u00f5es pr\u00e1ticas. Se estivermos a criar servi\u00e7os ou campanhas de vacina\u00e7\u00e3o ou a salvar pessoas ap\u00f3s uma emerg\u00eancia, isto \u00e9 um problema\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A principal inova\u00e7\u00e3o da ferramenta \u00e9 a sua capacidade de extrair conhecimentos de alta resolu\u00e7\u00e3o de imagens de sat\u00e9lite Sentinel-2 de baixa resolu\u00e7\u00e3o.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ao analisar at\u00e9 32 imagens deslocadas no tempo do mesmo local, a IA consegue detetar estruturas muito mais pequenas do que um \u00fanico pixel.<\/span><\/p>\n<figure id=\"attachment_14313\" aria-describedby=\"caption-attachment-14313\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-14313 size-full\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800.png\" alt=\"IA Google\" width=\"800\" height=\"374\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800.png 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800-300x140.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800-768x359.png 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800-18x8.png 18w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/09\/OB_Temporal_Img2.width-800-60x28.png 60w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-14313\" class=\"wp-caption-text\">Densidade de edif\u00edcios em 2023 com base nos dados do conjunto de dados temporais Open Buildings 2.5D. Fonte: <a href=\"https:\/\/research.google\/blog\/open-buildings-25d-temporal-dataset-tracks-building-changes-across-the-global-south\/\">Google<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Para al\u00e9m da dete\u00e7\u00e3o, o sistema estima as alturas dos edif\u00edcios com uma precis\u00e3o not\u00e1vel - dentro de 1,5 metros, em m\u00e9dia. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Isto transforma imagens planas de sat\u00e9lite em dados ricos e multi-camadas, fornecendo aos planeadores urbanos e \u00e0s organiza\u00e7\u00f5es humanit\u00e1rias um instrumento poderoso para compreender a densidade populacional e as necessidades de recursos.<\/span><\/p>\n<h2><strong>Mapeamento do Sul Global<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">O termo \"Sul Global\" refere-se normalmente \u00e0s na\u00e7\u00f5es em desenvolvimento em \u00c1frica, na \u00c1sia, na Am\u00e9rica Latina e nas Cara\u00edbas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Estas regi\u00f5es, que albergam a maioria da popula\u00e7\u00e3o mundial, enfrentam frequentemente desafios em termos de presta\u00e7\u00e3o de cuidados de sa\u00fade de elevada qualidade, desenvolvimento urbano, conserva\u00e7\u00e3o ambiental e gest\u00e3o de recursos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Abdoulaye Diack, gestor de programa do projeto, declarou: \"Queremos que as pessoas do Sul global que tomam decis\u00f5es pol\u00edticas tenham as mesmas ferramentas dispon\u00edveis que as do Norte global\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O conjunto de dados j\u00e1 est\u00e1 a encontrar aplica\u00e7\u00f5es pr\u00e1ticas. No Uganda, o <\/span><a href=\"https:\/\/sunbird.ai\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Sunbird AI sem fins lucrativos<\/span><\/a><span style=\"font-weight: 400;\"> est\u00e1 a tirar partido destes dados para projectos de eletrifica\u00e7\u00e3o rural.<\/span><\/p>\n<p><a href=\"https:\/\/www.worldpop.org\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">WorldPop<\/span><\/a><span style=\"font-weight: 400;\">A equipa de investiga\u00e7\u00e3o da Universidade de Southampton est\u00e1 a utiliz\u00e1-lo para aperfei\u00e7oar as estimativas da popula\u00e7\u00e3o mundial - informa\u00e7\u00e3o essencial para o planeamento de tudo, desde campanhas de vacina\u00e7\u00e3o at\u00e9 \u00e0 resposta a cat\u00e1strofes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O diretor do WorldPop, Professor Andrew Tatem, explicou por que raz\u00e3o estes dados s\u00e3o importantes: \"Compreender onde vivem as pessoas \u00e9 vital para garantir que os recursos s\u00e3o distribu\u00eddos de forma justa e que ningu\u00e9m \u00e9 deixado para tr\u00e1s na presta\u00e7\u00e3o de servi\u00e7os como os cuidados de sa\u00fade\".<\/span><\/p>\n<p>A IA est\u00e1 a melhorar a cartografia por sat\u00e9lite e 3D, fornecendo informa\u00e7\u00f5es mais precisas e atempadas sobre o crescimento urbano e as altera\u00e7\u00f5es ambientais.<\/p>\n<p><span style=\"font-weight: 400;\">Por exemplo, um\u00a0<a href=\"https:\/\/www.ayadata.ai\/case-study\/environmental-change-detection-using-high-resolution-satellite-imagery\/\" target=\"_blank\" rel=\"noopener\">projeto recente de Aya Data<\/a> no Gana e<\/span><span style=\"font-weight: 400;\">utilizou a IA para analisar milhares de imagens de sat\u00e9lite da Am\u00e9rica do Sul, acompanhando as altera\u00e7\u00f5es nas florestas, \u00e1reas urbanas e terrenos agr\u00edcolas ao longo de v\u00e1rios anos.<\/span><\/p>\n<p>A capacidade da IA para detetar altera\u00e7\u00f5es subtis, tais como sinais precoces de desfloresta\u00e7\u00e3o ou novos desenvolvimentos, informa as pol\u00edticas de agricultura e conserva\u00e7\u00e3o do mundo real.<\/p>\n<p>Para al\u00e9m de observar altera\u00e7\u00f5es a longo prazo no ambiente, a IA permite aos investigadores detetar e responder a amea\u00e7as como o abate ilegal de \u00e1rvores, a ca\u00e7a furtiva de animais selvagens e altera\u00e7\u00f5es n\u00e3o autorizadas na utiliza\u00e7\u00e3o dos solos, vis\u00edveis a partir de imagens de sat\u00e9lite.<\/p>\n<p><span style=\"font-weight: 400;\">A Google admite que o seu conjunto de dados tem limita\u00e7\u00f5es. A persist\u00eancia de nuvens pode impedir a recolha de dados em algumas das regi\u00f5es mais h\u00famidas do mundo e estruturas muito pequenas podem tamb\u00e9m escapar \u00e0 dete\u00e7\u00e3o.\u00a0<\/span><\/p>\n<p>No entanto, o Open Buildings 2.5D Temporal Dataset \u00e9 um excelente exemplo da poderosa sinergia entre a democratiza\u00e7\u00e3o dos dados e a IA.<\/p>\n<p>Ao democratizar o acesso a informa\u00e7\u00f5es geoespaciais complexas, abre caminho a um planeamento urbano mais equitativo, \u00e0 prepara\u00e7\u00e3o para cat\u00e1strofes e ao desenvolvimento sustent\u00e1vel \u00e0 escala mundial.<\/p>","protected":false},"excerpt":{"rendered":"<p>A Google Research lan\u00e7ou o Open Buildings 2.5D Temporal Dataset, um projeto que acompanha as altera\u00e7\u00f5es na constru\u00e7\u00e3o em todo o Sul Global de 2016 a 2023. Este conjunto de dados excecionalmente detalhado oferece uma vis\u00e3o din\u00e2mica da urbaniza\u00e7\u00e3o ano a ano. Ele captura a constru\u00e7\u00e3o, o crescimento e a transforma\u00e7\u00e3o de edif\u00edcios em regi\u00f5es onde esses dados s\u00e3o escassos ou inexistentes h\u00e1 muito tempo. John Quinn, engenheiro de software da Google Research, explicou a import\u00e2ncia do projeto: \"N\u00e3o saber onde est\u00e3o os edif\u00edcios \u00e9 um grande problema por muitas raz\u00f5es pr\u00e1ticas. Se estivermos a criar servi\u00e7os ou campanhas de vacina\u00e7\u00e3o ou a salvar pessoas ap\u00f3s uma emerg\u00eancia, isto \u00e9 um problema\". A ferramenta<\/p>","protected":false},"author":2,"featured_media":14319,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[102],"class_list":["post-14312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-google"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Google&#039;s Open Buildings project maps urban expansion across the Global South | DailyAI<\/title>\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\/09\/googles-open-buildings-project-maps-urban-expansion-across-the-global-south\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Google&#039;s Open Buildings project maps urban expansion across the Global South | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Google Research has released the Open Buildings 2.5D Temporal Dataset, a project that tracks building changes across the Global South from 2016 to 2023. 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