{"id":13803,"date":"2024-08-10T09:37:16","date_gmt":"2024-08-10T09:37:16","guid":{"rendered":"https:\/\/dailyai.com\/?p=13803"},"modified":"2024-08-18T12:12:43","modified_gmt":"2024-08-18T12:12:43","slug":"deepmind-build-table-tennis-robot-that-beats-newbie-players-100-of-the-time","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/08\/deepmind-build-table-tennis-robot-that-beats-newbie-players-100-of-the-time\/","title":{"rendered":"DeepMind constr\u00f3i rob\u00f4 de t\u00e9nis de mesa que vence jogadores novatos em 100% das vezes"},"content":{"rendered":"<p><strong>Os investigadores da Google DeepMind desenvolveram um rob\u00f4 com intelig\u00eancia artificial capaz de jogar t\u00e9nis de mesa a um n\u00edvel humano amador.\u00a0<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Registar a presen\u00e7a de uma bola de pingue-pongue, calcular a sua dire\u00e7\u00e3o e mover a raquete para a atingir - tudo numa fra\u00e7\u00e3o de segundo - \u00e9 uma tarefa gigantesca em rob\u00f3tica.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O rob\u00f4 da DeepMind est\u00e1 equipado com um bra\u00e7o rob\u00f3tico IRB 1100 montado em dois p\u00f3rticos lineares, que lhe permitem mover-se rapidamente sobre a mesa e em dire\u00e7\u00e3o a ela. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tem uma incr\u00edvel amplitude de movimentos, alcan\u00e7ando a maior parte das zonas da mesa para bater a bola com uma raquete, tal como um humano.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os \"olhos\" s\u00e3o c\u00e2maras de alta velocidade que captam imagens a 125 fotogramas por segundo, fornecendo dados a um sistema de perce\u00e7\u00e3o baseado em redes neuronais que segue a posi\u00e7\u00e3o da bola em tempo real.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O sistema de IA que controla o rob\u00f4 utiliza um sofisticado sistema de dois n\u00edveis:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Controladores de baixo n\u00edvel (LLCs)<\/strong>: S\u00e3o redes neuronais especializadas, treinadas para executar habilidades espec\u00edficas no t\u00e9nis de mesa, tais como pancadas de forehand ou pancadas de backhand. Cada LLC foi concebida para se destacar num determinado aspeto do jogo.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Controlador de alto n\u00edvel (HLC)<\/strong>: Este \u00e9 o c\u00e9rebro estrat\u00e9gico do sistema. O HLC escolhe o SRL a utilizar para cada bola que entra, com base no estado atual do jogo, no estilo de jogo do advers\u00e1rio e nas capacidades do rob\u00f4.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Esta abordagem dupla permite ao rob\u00f4 combinar a execu\u00e7\u00e3o precisa de remates individuais com uma estrat\u00e9gia de n\u00edvel superior, imitando a forma como os jogadores humanos pensam sobre o jogo.<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"Demonstra\u00e7\u00f5es - T\u00e9nis de mesa rob\u00f3tico competitivo a n\u00edvel humano\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/abi84lnjNV4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2>Ligar a simula\u00e7\u00e3o ao mundo real<\/h2>\n<p><span style=\"font-weight: 400;\">Um dos maiores desafios da rob\u00f3tica \u00e9 transferir para o mundo real as compet\u00eancias aprendidas em ambientes de simula\u00e7\u00e3o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> O <a href=\"https:\/\/arxiv.org\/pdf\/2408.03906\" target=\"_blank\" rel=\"noopener\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span> estudo<\/a> documenta v\u00e1rias t\u00e9cnicas para resolver este problema:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Modela\u00e7\u00e3o f\u00edsica realista<\/b><span style=\"font-weight: 400;\">: Os investigadores utilizaram motores de f\u00edsica avan\u00e7ada para modelar a din\u00e2mica complexa do t\u00e9nis de mesa, incluindo a rota\u00e7\u00e3o da bola, a resist\u00eancia do ar e as interac\u00e7\u00f5es entre a raquete e a bola.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Aleatoriza\u00e7\u00e3o de dom\u00ednios<\/b><span style=\"font-weight: 400;\">: Durante o treino, a IA foi exposta a uma vasta gama de condi\u00e7\u00f5es simuladas, ajudando-a a generalizar-se \u00e0s varia\u00e7\u00f5es que poderia encontrar no mundo real.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Adapta\u00e7\u00e3o do simulador ao real<\/b><span style=\"font-weight: 400;\">: A equipa desenvolveu m\u00e9todos para ajustar as capacidades simuladas ao desempenho no mundo real, incluindo uma nova t\u00e9cnica de \"corre\u00e7\u00e3o de rota\u00e7\u00e3o\" para lidar com as diferen\u00e7as no comportamento das p\u00e1s entre a simula\u00e7\u00e3o e a realidade.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Recolha de dados iterativa<\/b><span style=\"font-weight: 400;\">: Os investigadores actualizaram continuamente os seus dados de treino com jogos do mundo real, criando um ciclo de aprendizagem em constante aperfei\u00e7oamento.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Talvez uma das caracter\u00edsticas mais impressionantes do rob\u00f4 seja a sua capacidade de adapta\u00e7\u00e3o em tempo real. Durante um jogo, o sistema regista v\u00e1rias estat\u00edsticas sobre o seu pr\u00f3prio desempenho e o do advers\u00e1rio.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Utiliza esta informa\u00e7\u00e3o para ajustar a sua estrat\u00e9gia em tempo real, aprendendo a explorar os pontos fracos do jogo do advers\u00e1rio enquanto refor\u00e7a as suas pr\u00f3prias defesas.<\/span><\/p>\n<h2>Avalia\u00e7\u00e3o do robot pingue-pongue<\/h2>\n<p><span style=\"font-weight: 400;\">Ent\u00e3o, como \u00e9 que a DeepMind testou o seu rob\u00f4 de t\u00e9nis de mesa?\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em primeiro lugar, a equipa recrutou 59 jogadores volunt\u00e1rios e avaliou as suas compet\u00eancias no t\u00e9nis de mesa, classificando-os como jogadores principiantes, interm\u00e9dios, avan\u00e7ados ou avan\u00e7ados+. Do grupo inicial, 29 participantes, abrangendo todos os n\u00edveis de aptid\u00e3o, foram seleccionados para o estudo completo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depois, um jogador selecionado participou em tr\u00eas jogos competitivos contra o rob\u00f4, seguindo regras de t\u00e9nis de mesa modificadas para ter em conta as limita\u00e7\u00f5es do rob\u00f4.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Para al\u00e9m de recolherem dados quantitativos do rob\u00f4, ap\u00f3s o jogo, os investigadores realizaram entrevistas breves e semi-estruturadas com cada participante sobre a sua experi\u00eancia geral.\u00a0<\/span><\/p>\n<h2>Resultados<\/h2>\n<p><span style=\"font-weight: 400;\">No total, o rob\u00f4 ganhou 45% dos seus jogos, demonstrando um desempenho global s\u00f3lido.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dominou os principiantes (ganhou 100% de partidas) e manteve-se firme contra os interm\u00e9dios (ganhou 55%), mas teve dificuldades contra os jogadores avan\u00e7ados e avan\u00e7ados+ (perdeu todas as partidas).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Felizmente para n\u00f3s, meros mortais, havia pelo menos uma grande fraqueza: a dificuldade do rob\u00f4 em lidar com o underspin, que era uma falha not\u00e1vel na sua armadura contra jogadores mais experientes.\u00a0<\/span><\/p>\n<p>Mesmo assim, se n\u00e3o souber jogar t\u00e9nis de mesa ou se achar que \u00e9 apenas med\u00edocre, este rob\u00f4 vai gostar das suas hip\u00f3teses.<\/p>\n<p><iframe loading=\"lazy\" title=\"Alguns destaques - Conseguir um t\u00e9nis de mesa rob\u00f3tico competitivo a n\u00edvel humano\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/EqQl-JQxToE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><span style=\"font-weight: 400;\">Barney J. Reed, treinador de t\u00e9nis de mesa, <\/span><a href=\"https:\/\/sites.google.com\/view\/competitive-robot-table-tennis\/home?utm_source&amp;utm_medium&amp;utm_campaign&amp;utm_content&amp;pli=1\"><span style=\"font-weight: 400;\">comentou o estudo<\/span><\/a><span style=\"font-weight: 400;\">\"\u00c9 verdadeiramente fant\u00e1stico ver o rob\u00f4 jogar com jogadores de todos os n\u00edveis e estilos. O nosso objetivo era que o rob\u00f4 estivesse a um n\u00edvel interm\u00e9dio. Surpreendentemente, foi isso mesmo que aconteceu, todo o trabalho \u00e1rduo valeu a pena\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Sinto que o rob\u00f4 excedeu at\u00e9 as minhas expectativas. Foi uma verdadeira honra e um prazer fazer parte desta investiga\u00e7\u00e3o. Aprendi muito e estou muito grato a todas as pessoas com quem tive o prazer de trabalhar neste projeto.\"<\/span><\/p>\n<p>Esta est\u00e1 longe de ser a primeira incurs\u00e3o da DeepMind na rob\u00f3tica desportiva e na IA. N\u00e3o h\u00e1 muito tempo, constru\u00edram <a href=\"https:\/\/dailyai.com\/pt\/2024\/04\/deepmind-train-robot-soccer-players-that-kick-tackle-and-defend\/\">Rob\u00f4s de futebol com IA<\/a> capaz de passar, desarmar e rematar.<\/p>\n<p>A DeepMind tem estado a lan\u00e7ar\u00a0<a href=\"https:\/\/dailyai.com\/pt\/2024\/01\/google-releases-a-suite-of-advanced-robotic-tools\/\" target=\"_blank\" rel=\"noopener\">Ferramentas de IA para rob\u00f3tica<\/a>\u00a0para os programadores durante anos e fez descobertas recentes em\u00a0<a href=\"https:\/\/dailyai.com\/pt\/2023\/07\/googles-ai-turns-vision-language-into-robotic-actions\/\" target=\"_blank\" rel=\"noopener\">vis\u00e3o e destreza do robot.<\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u00c0 medida que a IA e a rob\u00f3tica continuam a avan\u00e7ar, podemos esperar ver mais exemplos de m\u00e1quinas a dominar tarefas que outrora se pensava serem exclusivamente do dom\u00ednio humano.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O dia em que poder\u00e1 desafiar um rob\u00f4 para um jogo de t\u00e9nis de mesa no seu centro comunit\u00e1rio local pode n\u00e3o estar longe - mas n\u00e3o se surpreenda se ele o vencer na primeira ronda.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Os investigadores da Google DeepMind desenvolveram um rob\u00f4 com intelig\u00eancia artificial capaz de jogar t\u00e9nis de mesa a um n\u00edvel humano amador.  Registar a presen\u00e7a de uma bola de pingue-pongue, calcular a sua dire\u00e7\u00e3o e mover a raquete para a atingir - tudo numa fra\u00e7\u00e3o de segundo - \u00e9 uma tarefa gigantesca em rob\u00f3tica.  O rob\u00f4 da DeepMind est\u00e1 equipado com um bra\u00e7o rob\u00f3tico IRB 1100 montado em dois p\u00f3rticos lineares, que lhe permitem mover-se rapidamente sobre a mesa e em dire\u00e7\u00e3o a ela. Tem uma incr\u00edvel amplitude de movimentos, alcan\u00e7ando a maioria das \u00e1reas da mesa para bater na bola com uma raquete, tal como um humano faz.\u00a0<\/p>","protected":false},"author":2,"featured_media":13804,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[147,105,169],"class_list":["post-13803","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-deepmind","tag-machine-learning","tag-robotics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DeepMind build table tennis robot that beats newbie players 100% of the time | 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\/08\/deepmind-build-table-tennis-robot-that-beats-newbie-players-100-of-the-time\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DeepMind build table tennis robot that beats newbie players 100% of the time | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Researchers at Google DeepMind have developed an AI-powered robot capable of playing competitive table tennis at an amateur human level.\u00a0 Registering the presence of a ping-pong ball, calculating its direction, and moving the paddle to hit it \u2013 all in a split second \u2013 is a mammoth task in robotics.\u00a0 DeepMind\u2019s robot is equipped with an IRB 1100 robotic arm mounted on two linear gantries, which allow it to move swiftly across and toward the table. It has an incredible range of motion, reaching most areas of the table to strike the ball with a paddle as a human does.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/pt\/2024\/08\/deepmind-build-table-tennis-robot-that-beats-newbie-players-100-of-the-time\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-10T09:37:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-18T12:12:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/08\/DALL\u00b7E-2024-08-10-10.31.40-A-high-quality-landscape-image-of-a-futuristic-table-tennis-robot-designed-by-DeepMind-playing-a-game-of-table-tennis.-The-robot-has-a-sleek-metalli.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1792\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta 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