Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food...
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Transcript of Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food...
![Page 1: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/1.jpg)
Illusions and Other Visual Defects
CITA 6016
Food Sensory Analysis
University of Puerto Rico
Food Science & Technology
![Page 2: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/2.jpg)
Visual Illusions
Brain misinterpretation of the presented visual information
See http://www.michaelbach.de/ot/ for a full tour of examples
![Page 3: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/3.jpg)
Count the black dots!
![Page 4: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/4.jpg)
Are the wheels turning?
![Page 5: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/5.jpg)
Which side is up?
![Page 6: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/6.jpg)
Which end is closer to you?
![Page 7: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/7.jpg)
Parallel or sloping lines?
![Page 8: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/8.jpg)
How many legs?
![Page 9: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/9.jpg)
Look at the dot. Where’s the haze?
![Page 10: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/10.jpg)
Focus on the dot and move.
![Page 11: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/11.jpg)
Are purple lines straight?
![Page 12: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/12.jpg)
Which center is larger?
![Page 13: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/13.jpg)
Ghostly dots?
![Page 14: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/14.jpg)
Man or Liar?
![Page 15: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/15.jpg)
How many tines in the fork?(two, but can you see three?)
More examples
What does this say? Look again.
Are the sides of the square curved or straight? Check with a straight edge.
![Page 16: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/16.jpg)
More examples
How many colors?(two)
Are the diagonal lines parallel?
(yes)
Do you see a man playing a sax or a woman in shadow?
Can you see both an old lady and a
young lady?
![Page 17: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/17.jpg)
Right or Left Brain
The brain is a great parallel processor for visual information.
Identifies differences Fill in blanks
…but can get in trouble
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Identifies differences
![Page 19: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/19.jpg)
Fill in blanks
Aoccdrnig to a rscheearch at an Elingsh
uinervtisy, it deosn't mttaer in waht oredr the
ltteers in a wrod are, the olny iprmoetnt tihng
is taht frist and lsat ltteer is at the rghit pclae.
The rset can be a toatl mses and you can
sitll raed it wouthit porbelm. Tihs is bcuseae
we do not raed ervey lteter by it slef but the
wrod as a wlohe
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Internal fight
![Page 21: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/21.jpg)
Blindness
Some people cannot see some colors
… can you?
![Page 22: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/22.jpg)
NormalColorVision
Red/GreenColorBlind
Blue/YellowColorBlind
Blindness
![Page 23: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/23.jpg)
NormalColorVision
Red/GreenColorBlind
Blue/YellowColorBlind
Blindness
![Page 24: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/24.jpg)
NormalColorVision
Red/GreenColorBlind
Blindness
![Page 25: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/25.jpg)
What numbers do you see?
![Page 26: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/26.jpg)
What numbers do you see?
![Page 27: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/27.jpg)
What numbers do you see?
![Page 28: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/28.jpg)
What numbers do you see?
![Page 29: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/29.jpg)
What shapes do you see?
![Page 30: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/30.jpg)
What shapes do you see?
![Page 31: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/31.jpg)
What shapes do you see?
![Page 32: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/32.jpg)
What shapes do you see?
![Page 33: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/33.jpg)
Carry Over Effects
Vision sensors saturate and keep “memory” of the previously seen image with contrasting colors
![Page 34: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/34.jpg)
Look at the four dots for 10 seconds.
![Page 35: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/35.jpg)
What do you see?
![Page 36: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/36.jpg)
Try this one…
![Page 37: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/37.jpg)
What do you see?
![Page 38: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/38.jpg)
…and this one?
![Page 39: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/39.jpg)
What do you see?
![Page 40: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/40.jpg)
…and this one?
![Page 41: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/41.jpg)
What do you see?
![Page 42: Illusions and Other Visual Defects CITA 6016 Food Sensory Analysis University of Puerto Rico Food Science & Technology.](https://reader034.fdocuments.in/reader034/viewer/2022051622/5697c0111a28abf838ccb84b/html5/thumbnails/42.jpg)
Conclusion
Don’t believe everything you see Be aware that panelists are human too and
may unadvertedly make mistakes