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    November 01

    用计算机视觉来揭穿华南虎骗局

    最近网上“华南虎”照片搞的沸沸扬扬，不知真假。从水木看到一个链接，有人很牛拜，用计算机视觉的知识来揭穿这个骗局。他算了两幅图之间的透视变换，发现是个完美的平面，由此判断那几张照片是把老虎图案贴进照片里的，而不是真实拍的照片。我不完全同意他的观点，但很佩服他的专业精神，贴上来推广计算机视觉，嘿嘿。
     
     
    原文中的效果图：两幅图像在计算了透视变换后叠加的结果（原文作者声称如果是真的老虎的话，叠加效果不会有这么好）
    Overlapped Photo
     
    附加讨论：我之所以不是完全赞同，是因为拍摄的照片本来的透视效果就不强，对于老虎来说几乎是垂直投影，所以哪怕不是在一个平面上的物体，也可能可以用透视变换来约束。
    11:00 PM | Blog it

    Comments (9)

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    No namewrote:
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    Dec. 26
    Shengyang Daiwrote:
    同意
    不过后来又出来个变换到年画上的，这个能重合就说不过去了
    Nov. 20
    Tianliang Liuwrote:
    不错！ 研究计算机视觉还是很有用处的！ 呵呵
    Nov. 15
    BiGang Liwrote:
    被你们researcher弄糊涂了，哈哈
    Nov. 5
    Wei Coco Xuwrote:
    从ying那看到，过来踩一脚
    Nov. 4
    永远逗你玩 _wrote:
    David Stork搞了一把更牛逼的，也是用homography证明画家没有作弊，口水仗打了四年
     
    Nov. 3
    Chang Yuanwrote:
    Affine是perspective(homography)的特例啊，对应的几何情况是那个平面在无限远处...
    Nov. 2
    robinwrote:
    好像是说用affine(仿射）变换而不是透视变换(projective)
    Nov. 2
    风风风 王wrote:
    你们researcher真伟大。。
    Nov. 1

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