比薩斜塔越來越斜囉 !－愚人愚己

比薩斜塔越來越斜囉! The Leaning Tower Illusion

Best Visual Illusion Contest of 2007 ~ First prize 視覺幻像比賽首獎作品

比薩斜塔越來越斜囉!

右邊的比薩斜塔看起來比較傾斜 ?

The two images of the Leaning Tower of Pisa are identical but it gave an impression that the

right tower leans more than the left… simple yet amazing.

The Leaning Tower Illusion, December 22, 2007
Frederick Kingdom, Ali Yoonessi and Elena Gheorghiu

其實兩圖是完全一樣的。

詳細英文說明請看本頁最後段。

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3D art at Waterloo Station, London

英國倫敦滑鐵盧車站地板上的立體畫

3D art at Waterloo Station, London, October 19, 2007

An interesting 3D drawing by street artist Kurt Wenner, at the Waterloo Station in London. The artwork uses perspective tricks to make it “pop up” in 3D when viewed from a certain angle…

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從下面圖積木之間你看見什麼字句?

( 提示:為什麼你需要多一些性生活。Why you should have more sex )

假如你看不出來,請退後一到兩公尺再看看。( 答案請看回應欄。)

Why you should have more sex, August 28, 2007

Read the words between the blocks. If you can’t read it, just get off your chair and try reading it a metre (or two) away from the screen.

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Spinning Silhouette Optical Illusion

下面的女子是往哪一方向旋轉呢? 順時針還是逆時針?

暗示 : 兩者皆可, 集中注意力在腿部即會改變方向。

Spinning Silhouette Optical Illusion, July 30, 2007

This is one of the coolest optical illusions I’ve seen (a bit tough as well).Most people will see the girl spinning clockwise initially… but the girl can be seen as rotating anti-clockwise as well, depending on how you see it.

Tips - focus below the hip to ‘change’ the direction; if you still couldn’t see it after some time,cover the upper body part and just focus on the legs.

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說明 : 第一圖

Best Visual Illusion of 2007

The Leaning Tower Illusion

The winner of the Best Visual Illusion of the Year Contest 2007 organised by The Neural Correlate Society.

Here is a novel illusion that is as striking as it is simple. The two images of the Leaning Tower of Pisa are
identical, yet one has the impression that the tower on the right leans more, as if photographed from a
different angle. The reason for this is because the visual system treats the two images as if part of a single
scene. Normally, if two adjacent towers rise at the same angle, their image outlines converge as they recede
from view due to perspective, and this is taken into account by the visual system. So when confronted with
two towers whose corresponding outlines are parallel, the visual system assumes they must be diverging as
they rise from view, and this is what we see. The illusion is not restricted to towers photographed from
below,but works well with other scenes, such as railway tracks receding into the distance.What this illusion
reveals is less to do with perspective, but how the visual system tends to treat two side-by-side images as if
part of the same scene. However hard we try to think of the two photographs of the Leaning Tower as
separate, albeit identical images of the same object, our visual system regards them as the ‘Twin Towers of
Pisa’, whose perspective can only be interpreted in terms of one tower leaning more than the other.