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English >> Sci-Tech

Exposition of "ad:tech San Francisco 2013" kicks off (2)

（Xinhua）  08:47, April 11, 2013  

John Casey, a comic painter, illustrates how to draw a portrait by computer to visitors at the booth of the Crimson Hexagon in the "ad:tech San Francisco 2013" in San Francisco, the United States, April 9, 2013. The two-day exposition has over 30 lectures and about 200 booths for international advertisement companies and clients. (Xinhua/Liu Yilin)


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（Editor：LiangJun、Chen Lidan）

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