在每一屆的Google I/O上，聽完了Keynote、看完了Google發表的「最新科技」，事實上還有不少沒有被注意到的亮點，隱藏在一個又一個Sandbox（沙盒）中，透過不同的趣味應用，了解Google產品背後的策略跟原理。

跟著《數位時代》再到會場上走一圈，回顧在八大主題展區中，到底有哪些你應該知道的事？

不只Google助理，AI還有很多有趣的事

AI（人工智慧）無疑是Google近年來主力發展的方向，但在了解Google助理最新的進展，Google Duplex日後的「進化」後，事實上Google還做了許多值得深入了解的事，透過簡單有趣的應用來告訴你，到底AI可以用在哪？

你學動物叫，AI打分數

要細數最熱門展位，這一項模擬應用一定排得上名。

在展位上，Google設置了一個可愛的農場，讓兩個玩家比賽「學動物叫」，讓聲音透過機器學習，看誰的準確度越高，誰在農場的車子就能更快抵達終點，告訴你機器對於「聲音」也有學習的能力，AI在沒有對話的情況下，也能辨識出不同的聲音背後代表的意義。

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AI讓你也當一次藝術家

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在這個「Draw to Art」的展區中，AI跟藝術結合了。

透過Google的對外開源機器學習框架TensorFlow，當使用者在白板左側上畫畫時，右側就會即時比對全球博物館中的展品及收藏品，包括畫作、塗鴉、雕像⋯等等，即時對比出和玩家畫的最相似的作品，讓人人都能當回藝術家。

每畫下一筆，因圖像在進行即時對比，結果也都會隨時改變。

AI向兒時的「手影遊戲」致敬

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在這一個黑色小貨櫃屋中，「Shadow Art」是透過AI向我們小時候玩的「手影」致敬。

同樣基於TensorFlow，玩家在燈光前比出一種手勢後，AI會辨識這大概是什麼形狀，相對應的又是哪一種角色，讓者個角色化為「現實」，出現在前方的故事布幕中，共有五種角色可以辨識，包括白鷺鷥、馬、龍、跟女人等等。

當你變出一種動物後，就可以在故事框中，和上一個變出來的角色互動，相當生生動有趣。

Edge TPU讓滾輪回到該去的地方

在3月時，Google推出了Edge TPU張量處理器（Tensor Processing Unit，TPU）的開發板，裡面包含Edge TPU、CPU、GPU，還可以與相機相連，讓開發者可以更簡單的做出一款AI裝置。

在機器學習展區中，也展示了它究竟可以怎麼被運用。

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這樣的應用，很直接就會聯想到，可以運用在工廠的生產線上，不用工人就能即時檢測出良率不佳的產品。現場人員也補充到，一樣的辨識功能，靠著Edge TPU在裝置上解決，判斷時間只需花29.3毫秒（ms），但在Pixel手機上因為要連到雲端，就得耗費達145毫秒（ms），慢非常多。

針對簡單的圖像，或是人臉辨識，都是可以資訊在裝置上就能完成的計算，不用真的連上雲端，不僅省時，也能節省不少錢。

車還是很熱門，Android Auto大排長龍

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和去年在I/O Keynote上大談自駕車Waymo不同，今年Google在汽車方面的進展，在Keynote上講到的少之又少。

事實上，與蘋果CarPlay抗衡，Android Auto問世已經邁入第五年，在I/O開展前就已經推出了全新的介面，但要今年夏天才正式上線，因此Android Auto展區也成為不少人願意排隊、一睹為快的展區。

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在過去，需要一根USB線才能讓手機畫面與車上螢幕連結，把畫面投射到車上的螢幕，但未來透過WIFI，無線也能連接，也開始支援各種車型的TouchPad操作。

截至目前，Android Auto已經可以用在50個不同品牌、超過500款車上了，而TOYOTA終於也開始開放支援，將陸續進駐到台灣、南韓、新加坡、菲律賓、南非等新市場。這樣的里程碑，讓Android Auto產品管理總經理Mickey Kataria定出了新目標：2020年開在路上，全球支援Android Auto的汽車要達到1億台，不過是否真的能達標？答案就等明年I/O揭曉了。

妙！Google助理也走進按鍵功能手機裡

在Keynote中，我們已經見證了新一代Google助理的反應速度有多快，另一方面，雖然Google助理的覆蓋率沒有更新，仍維持在80個國家、超過10億個裝置中，但現場仍舊少不了展示Google助理究竟被應用在哪些裝置上，而針對不同裝置，語音介面設計又有何不同。

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其中真正有意思的是，在滿是按鍵的Feature Phone上，也有Google助理的存在，即便操作沒有那麼「原生」，得按下語音鍵才能對Google助理下指令，像是要詢問天氣時，Google助理則會透過網頁的方式幫忙找尋。但在印度、印尼，甚至其他許多開發中國家，智慧型手機並不普及，對Google而言是最好搶占這些新興市場的方式。

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當然，在現場不免要秀一些Google助理能做的「酷事」，比方說像是「Google花園」，可以透過Google助理來澆水、調光照、溫度，只要一聲令下就能種植物。

種種展示，無疑都是想說明一件事：Google助理仍正在滲透各種裝置，生態系還在不斷擴大，還有很多你想像不到的可能性。

Android對5G的想像？

最後走到Android展區，在2019年5G無疑是一大被關注的焦點。

從去年到現在推出的5G手機，無疑都是採用Android系統，Google預計今年全球會有超過20個營運商推出5G網路。但最為人津津樂道的，無非是5G在手機上的殺手級應用會是什麼，這個問題現在還沒有人知道答案。

Google平台與生態系行銷副總Bob Borchers在今年MWC為高通站台時，被問到最期待5G衍生出什麼樣的應用時，也只能表示：「這會取決於開發者，我只能想像，他們一定會做出一些令我們驚豔的東西。」

但是，在Sanbox中，Andriod卻給了我們一點點靈感、一些些方向：AR（擴增實境）。

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當然，這件事光用4G也能做到，只是Google認為在5G時代一定會更快、更流暢，是否會因為5G產生一款AR的殺手級應用，只能拭目以待了。