错觉博览

2016年世界视错觉大赛前10名

2016-07-0756522 16 分钟

一年一度的世界视错觉大赛近期落下帷幕，经过评审，选出了2016年年度十佳视错觉作品。其中来自美国的Mathew T. Harrison 和 Gideon P. Caplovitz、日本的Kokichi Sugihara还有新加坡的Silhouette Zoetrope包揽的前三名。

2016年世界视错觉大赛第一名：Motion Integration Unleashed New Tricks for an Old Dog

作者信息：

Mathew T. Harrison and Gideon P. Caplovitz

(University of Nevada Reno, USA)

2016年世界视错觉大赛第二名：Ambiguous Cylinder Illusion

作者信息：

Kokichi Sugihara

(Meiji University, Japan)

网络上对于第二名似乎更加热情，这里是来自果壳网关于这一视错觉现象的一种解释：《这个视错觉是怎么回事？为什么方形格子在镜子里的像是圆的？》

2016年世界视错觉大赛第三名：Silhouette Zoetrope

作者信息：

Christine Veras

(Nanyang Technological University, Singapore)

2016年世界视错觉大赛第四名：Caught inside a bubble

– Mark Vergeer, Stuart Anstis and Rob van Lier : “Caught Inside A Bubble”. University of Leuven, Belgium, Radboud University Nijmegen, The Netherlands, and UC San Diego, USA

In this illusion you can see colors that are not presented on the screen. An image of colored bull’s eyes is alternated with an image containing different sized greyscale bubbles. Although these bubbles are colorless, they will actually appear to be colored. These illusory colors are the afterimages of the bull’s eye colors. The intriguing thing is that the colors of the bubbles appear to be completely different, depending on the size of the bubble. Each bubble ‘captures’ the afterimage of the bull’s eye color that matches the size of the bubble. One colored image causes multiple, completely different afterimages.

2016年世界视错觉大赛第五名：A New Illusion at Your Ellbow

– Peter Brugger and Rebekka Meier: “A New Illusion At Your Elbow”. University Hospital Zurich, Switzerland

Move your finger slowly along a person’s forearm from the wrist towards the elbow crook – eyes closed, the person will anticipate touch in the elbow crook. This illusory anticipation may rest on our experience of tactile velocities that are usually much faster and make us believe we feel touch at a body location not yet reached. Neural characteristics of skin receptors specialized for slow motion may also contribute to the anticipation error. Like previously described illusions, the elbow crook illusion is larger on the non-dominant arm. Women showed a smaller illusion than men, confirming their reportedly superior cutaneous sensitivity.

2016年世界视错觉大赛第六名：The Dalesmen Singers Illusion

– Mike Pickard and Gurpreet Singh: “The Dalesmen Singers Illusion”. Sunderland University, UK

Are the letters in the illusion actually moving? The answer is no, they are rock steady on screen! Only the letters brightness’s are changed where the fill pulses alternatively between the black and white values of the edges. This creates a tiny impression of movement which is then amplified in the viewers mind by optimisation of the brightness and colour values in the scene, together with different phasing of the letter fill luminance changes. These create uncertainty in the viewer’s mind and the ability to pin down the precise spatial arrangement of the letters and so the sense of movement is increased.

2016年世界视错觉大赛第七名：Remote Controls

– Arthur G. Shapiro : “Remote Controls ”. American University, USA

Two physically identical rectangular bars become light and dark at the same time, but in some conditions they look as if they wink in alternation. The appearance of winking (alternating) or blinking (bars in sync) can be controlled by rectangles placed in the vicinity of the modulating bars: the bars blink when the rectangles are far away or adjacent to the bars but wink when there is a gap between the bars and the rectangles. The effect is remarkable because of the sudden change from wink to blink or vice versa, and because the change can occur across large distances.

2016年世界视错觉大赛第八名：The Shrunken Finger Illusion

– Vebjørn Ekroll, Bilge Sayim, Ruth Van der Hallen and Johan Wagemans: “The Shrunken Finger Illusion”. University of Leuven, Belgium

In the video about the “shrunken finger illusion”, we show you how you can make your own finger feel shorter by putting it into a halved ping-pong ball. To experience the illusion, look at your finger directly from above, with your finger extended upwards towards your eyes. Then, put the halved ping-pong ball on top of it, such that your finger is inside the ball. Now, when you look at the halved ping-pong ball, it will look like a complete ball. But what about your finger? It feels shorter, as if to make space for the illusory ball!

2016年世界视错觉大赛第九名：Millusion

– Sylvia Wenmackers : “Millusion”. University of Leuven, Belgium

As far as I know, this is a new illusion involving windmills, so I’ve called it “Millusion”. I experienced it myself while driving in the evening. One turbine seemed to be turning “the wrong way” as compared to the others. By the time I got home, I had figured it out: I had only seen the outlines of the windmills, silhouetted against illuminated clouds behind it. Probably I was looking at the front of most turbines and at the backside of the “wrong” one (or vice versa). Later, I asked scientific illustrator Pieter Torrez to help me animate it, to check this conjecture with a 3D model. It worked!

2016年世界视错觉大赛第十名：Lights and Darks in Vision

– Jose-Manuel Alonso: “Lights and Darks in Vision”. State University of New York, USA

This illusion demonstrates that the perception of dark and light features in a face is strongly influenced by context. A picture of a face is split into a dark-half and light-half version by setting either the light or dark pixels to a fixed gray value (while keeping the other pixels unchanged). The ‘white’ of the eyes in the dark-half picture has the same luminance as the ‘dark’ lips in the light-half version but the lips appear much darker. This strong illusion can be demonstrated with any face or visual scene photographed with a standard digital camera.

这个视错觉是怎么回事？