Akiyoshi's illusion pages

Akiyoshi's illusion pages

Akiyoshi KITAOKA, Professor, Department of Psychology, Ritsumeikan University, Kyoto, Japan email to Akiyoshi
Memorial talk of the Gold prize of the 9th L'ORÉAL Art and Science of Color Prize, in Tokyo 2006 Trick Eyes Mechanism Kanzen

Since May 10, 2002; Updated November 25, 2008

Warning: This page contains some works of "anomalous motion illusion", which might make sensitive observers dizzy or sick. Should you feel dizzy, you had better leave this page immediately. More

The latest works (Nov 18, 2008) --- The newest page (Nov 25, 2008) --- The updated page (Nov 20, 2008)
Illusion news (Nov 18, 2008) --- Illusion catalogue (Oct 11, 2008) --- Visiome --- Illusion books (Nov 7, 2008)
The page list --- Photos (Nov 13, 2008) --- Papers (Nov 25, 2008) --- Links (Nov 21, 2008) --- Japanese

"Rotating snakes"

Circular snakes appear to rotate 'spontaneously'.

Explanation of the elemental illusion (optimized Fraser-Wilcox illusion) (PDF)

How this work was created (PDF) (Trick Eyes Graphics p.78)

The commercial use of this image is not free of charge. Modification of this image for commercial purpose is usually declined. Educational or research use or modification is welcome.

"Rotating rays"

The outer ring of rays appears to rotate clockwise while the inner one counterclockwise.

"The autumn color swamp"

The inset appears to move.

"A bulge"

The floor appears to bulge out, though this imgae consists of only squares.

"Primrose's field"

This checkered background consists of squares but appears to wave. In addition, this figure also shows a waving motion illusion.

"Uzumaki ampan"

Concentric gray circles appear to be spirals.

"Rollers"

Rollers appear to rotate without effort. On the other hand, they appear to rotate in the opposite direction when observers see this image keeping blinking.

All my illusion pages

Anomalous motion illusion 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Rotational illusion 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Expansion and contraction 10 9 8 7 6 5 4 3 2 1
Rotating snakes 10 9 8 7 6 5 4 3 2 1

Color illusion 10 9 8 7 6 5 4 3 2 1 --- Chromostereopsis 3 2 1 --- Lightness illusion 4 3 2 1 --- --- Waves 5 4 3 2 1 --- Heat shimmer illusion 3 2 1 --- "Modern" geometrical illusion 5 4 3 2 1 --- "Classic" geometrical illusion 10 9 8 7 6 5 4 3 2 1 --- Spiral illusion 5 4 3 2 1 --- Miscellaneous 6 5 4 3 2 1 --- Autumn color swamps 2 1 --- Café Wall illusion --- Zöllner illusion --- "Trick eyes" --- Perceptual transparency 2 1 --- Stereograms 3 2 1 --- Illusion catalogue --- Kyoto illusion design 3 2 1 --- My nengajo --- Akachochin --- Koinobori --- Cherries --- Turtles --- No-illusion works 3 2 1 --- Op art 7 6 5 4 3 2 1 --- Illusion pop art 2 1 --- Illusions observed outdoors 3 2 1 --- Vanishing illusion--- A page of background motion --- Color change illusion --- Ritsumeikan's illusion --- Research reports and download --- Koma (tops) 2 1 --- U-zu-maki (Rabbits' spirals) --- Wallpapers 3 2 1 --- 2003: An illusory space odyssey --- Illusion therapy 2 1 --- Appied illusionolgy --- Kochi illusion design --- Toys of illusion --- Impossible figures --- Ambiguous (Reversible) figures 3 2 1 --- Illusion personality tests --- Illusion quizes --- Visual competion --- Window of illusion --- Expanding cushions --- Slope illusion --- Classification of anomalous motion illusion --- Comprehensive classification of illusions --- Exhibition of illusion designs 2004 --- Luminostereopsis --- Pincushion grid illusion of neon color spreading ---　Cherry blossom 2 1 --- Works of sinusodally modulated radials --- Explorer --- TEG --- TEE --- Visual phantoms (ECVP2005) --- ECVP waves --- Expanding flower --- Shadow-shade stereopsis --- Glasses-dependent illusion --- Movie illusion 6 5 4 3 2 1 --- Motion aftereffects 2 1--- Star arts--- Girl of blue eyes 3 2 1 --- Illusory staircase Gelb effect etc --- Afterimage works 2 1 --- Color constancy --- Popple illusion --- Hidden images --- Coloring images --- "The four seasons in Japan"--- Illusion design "Lipsticks"--- L'ORÉAL Art and Science of Color Prize, Gold Prize 2006--- Tie designs--- Gestalt psychological works --- Upside-down faces --- Cyanophyceae --- Newton Press book --- Illusion erasers --- Illusion of face 4 3 2 1 --- Color illusion: Special --- TEM --- Illusory signs --- Illusion mugs --- Professor McCourt in Ritsumeikan

The latest works 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Submission from friends

Illusion designs from friends 6 5 4 3 2 1

Illusion news

Illusion news 11 (September 2008 - )
Illusion news 10 (May 2008 - September 2008)
Illusion news 9 (February 2008 - April 2008)
Illusion news 8 (November 2007 - February 2008)
Illusion news 7 (September 2007 - October 2007)
Illusion news 6 (June 2007 - September 2007)
Illusion news 5 (January 2007 - May 2007)
Illusion news 4 (June 2006 - December 2006)
Illusion news 3 (January 2006 - May 2006)
Illusion news 2 (April 2005 - December 2005)
Illusion news (2002 - March 2005)

Photos

Today's Kyoto 11 10 9 8 7 6 5 4 3 2 1

Kyoto --- Japan --- World --- Ritsumeikan University

Illusions I encountered in England --- I visited Sarasota in May, 2005

Recommended books

Trick eyes　　

DISCLAIMER

Most of the material contained within these pages was created by Akiyoshi Kitaoka and is not copyright-free. If you wish to use any of the material for research purposes, personal purposes, or educational purposes, you may do so only if you include a citation. To cite my work, use my name, my website address, the title of my book, or the titles of my papers. For commercial or professional use, please contact the publisher "Kanzen"* who manages my published material. If you are a journalist and wish to use my material, only I can grant you permission to use my work.

*For the response from Kanzen, please wait about one week because it takes time to translate languages in the company.

For commercial customers, we can send image files in Adobe Illustrator format (ver. 8 or higher) or in bitmap (jpeg) format of any size. We also have files available in PDF, CorelDRAW, MS-Word, and related formats. <November 18, 2004>

I have received a number of requests asking for permission to upload some of my illusion designs to websites and I have granted such permission on an individual basis. Hereafter, I grant permission to upload to your webpage up to three (3) images if your webpage is to discuss the science of illusion or vision, is not a commercial site, and does not contain indecent, obscene, or illegal content. Religious or political sites would be declined. The sites that I cannot reach would be declined, either. My name and the address of my webpage (a link is OK) should be cited. Moreover, a cautionary message or warning like "These images might make observers feel sick" is necessary if they are anomalous motion illusions. Please withdraw my works from the sites if they do not satisfy the conditions shown above. <September 24, 2003; updated June 23, 2005>

The "Download" page was closed because of too much illegal use of my material. Please do not use them for commercial purpose without permission. For educational or research use of my high quality material, please send your request to me. I am sorry that original vector files or large bitmap files will not be provided for personal use. <May 28, 2004>

If you send me an e-mail, please do not attach any files because I might erroneously delete the e-mail thinking that a virus is hidden in the file. If you wish to send me a file, first send me an e-mail without any attachments and let me know what file(s) you plan to send. <August 30, 2004>

If you sent me an e-mail but have not heard from me within a week, I might possibly remove it in error. Then, please send it to me again with a clear title, e.g. "about illusion".<June 11, 2006>

It is my pleasure to grant permission for the use of my illusion material for papers, articles, or books if they are for educational or research purposes. In this case, I would like the authors to request permission. Requests from publishers or other agencies are not welcome. Requests for written permission are not welcome either, because it takes time to check, sign, and send it back, though I will do so if it is absolutely necessary. Of course, I give written permission if it is a commercial gift. <September 16, 2004>

Links to my website are welcome. Please link to this top page so that we can avoid overworking the Ritsumeikan University servers. <October 4, 2004>

Do not worry or become upset if you cannot see the illusions. I must confess that even I do not see some illusions. For instance, the Ponzo illusion, if the image is the upper-converging version, is difficult to see. <October 16, 2004>

Thanks to David <November 29, 2004>

RIKEN Library for vision science

Illusion catalogue

My biography --- My activity --- Ritsumeikan University

Acknowledgments (July 14, 2008)

email to: akitaoka@Lt.ritsumei.ac.jp

Access since June 3rd, 2002