慶應義塾大学 GIC 2024 自然科学特論 Ⅰ

石川 将也

2024. 5.22（ 水 ）design andMasaya Ishikawa

田谷 修一郎Shuichiro Tayacognition
07 completionassignment review

stopmotion animation using

similar objects

Find similar shaped ready-made objects that can be
animated by replacing it (like nails and milk carton) andmake a loop animation .
point・combine pixilation to overcome the shortage ofthe number of objects.

・make use of animation tech such as anticipation.
・be aware of the fact thatmovement takes precedence over form.

Optical IllusionOur mechanism for perception sometimes reveals
in unusual circumstances (2D, non-continuous ).

Optical IllusionOur mechanism for perception sometimes reveals
in unusual circumstances (2D, non-continuous ).

Optical Illusion in motion
・錯視の謎めきOur mechanism for perception sometimes reveals
in unusual circumstances (2D, non-continuous ).

Optical Illusion in motion
・錯視の謎めき

Optical illusions canentertain us(in a interesting andeducational way).

Our mechanism for perception sometimes reveals
in unusual circumstances (2D, non-continuous ).

Optical Illusion in motion・錯視の謎めき・Cafewall in motion
・Ninio in motion
・factor reduction of Shepardʼs Table

Our mechanism for perception sometimes reveals
in unusual circumstances (2D, non-continuous ).

Optical Illusion in motion

・錯視の謎めき・Cafewall in motion
・Ninio in motion
・factor reduction of Shepardʼs Table

Clues to the Mechanism of Human Cognition

The addition of a time axis allows us to moveback and forth between the visible and invisible.

Optical Illusion in motion

・錯視の謎めき・Cafewall in motion
・Ninio in motion
・factor reduction of Shepardʼs Table

Clues to the Mechanism of Human Cognition

The addition of a time axis allows us to moveback and forth between the visible and invisible.
the viewers can recognize it too.

Optical Illusion in motion

・錯視の謎めき・Cafewall in motion
・Ninio in motion
・factor reduction of Shepardʼs Table

Clues to the Mechanism of Human Cognition

Optical Illusion study

Clues to new design and ways of expression.

We can develop strong representations derived
from cognitive mechanisms.

Optical Illusion study

Clues to new design and ways of expression.

We can develop strong representations derived
from cognitive mechanisms.
・Animacy Heider & Simmel

ビーだまビーすけの大冒険

Optical Illusion study

・completion typography
そうとしかみえない・biological motion etc...

Clues to new design and ways of expression.

We can develop strong representations derived
from cognitive mechanisms.
・Animacy Heider & Simmel

ビーだまビーすけの大冒険

Optical Illusion study

・completion typography
そうとしかみえない・biological motion etc...

Clues to new design and ways of expression.

expression based on visual cognition 1

expression based on visual cognition 1

completion
laser frottage, 2008
そうとしかみえない , 2016

Why is this photo interesting to look at?

・Some of the outline information are missing.
・Though, the chair is perceptible.

Why is this photo interesting to look at?

= completion

・Some of the outline information are missing.
・Though, the chair is perceptible.

Why is this photo interesting to look at?

completion

completion

modal completion

completionamodal completion

modal completion

completion

Kanizza, 1955

illusory, (subjective) contour

modal completion

completion
White triangle is visible.
The white triangle
appears to be brighter
than the background.
The white triangle is in
front of the black circles
and a line drawn triangle.
Kanizza, 1955

illusory, (subjective) contour

modal completion

Ehrenstein Pattern, 1941

Varin, 1971

Koffca cross, 1935

Koffca cross, 1935

Day & Jory, 1980

Contours are visible,no luminance difference.

Contours
unvisible,luminancediffer.

Which is strong?

Which is strong?

Which is strong?

Which is strong?

modal completion
illusory, (subjective) contour
The undrawn contour
appears to becomplemented.
It is an actual visionary
representation.
The object in front, which ishiding something is complemented and seen.

modal completion

hidingmodal completion

Usui + Ishikawa + Taya, 2024

Kanizsa, 1955

hidingamodal completion

hidingamodal completion

hiddenhidingamodal completionocclusion complement
Completion itself is clear, but
without speciﬁc perception(contour, color, brightness).

hiddenThe “hidden one” appears to
be complemented because
it is in the back.

Nakayama & Shimojo, 1988

Nakayama & Shimojo, 1988

Occlusion complement characteristics

Occlusion complement characteristics

Eliminate special possibilities.

Occlusion complement characteristics

The brain views the world based on the assumption (constraint condition)that “the way we see things does not change signiﬁcantly even if wechange our viewpoint or position slightly.

Eliminate special possibilities.

Morikawa, 2012

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics

It takes priority over knowledge.

Occlusion complement characteristics
Use your ﬁnger and hide.

It takes priority over knowledge.

Occlusion complement characteristics
Use your ﬁnger and hide.

It takes priority over knowledge.

1991

breathing squareOcclusion complement characteristics

Local connections are important.

Occlusion complement characteristics

Local connections are important.

Occlusion complement characteristics

Local connections are important.

Symmetry was prioritized by the change in orientation.

Occlusion complement characteristics

No actual visual representations.

Occlusion complement characteristics
Complementation
works even without
knowledge, as longas the occlusion
relationship is foundcorrectly.

However, the result of completion may change
depending on knowledge.

Occlusion complement characteristics
Complementation
works even without
knowledge, as longas the occlusion
relationship is foundcorrectly.

However, the result of completion may change
depending on knowledge.

Amodal AbsenceAmodal AbsenceAmodal Absencemodal completion

illusory, (subjective) contour

The undrawn contour appears
to be complemented.

amodal completion

hidingocclusion complement

The hidden is complemented
and recognized.
When it is completely hidden,
it is recognized as absent.

hiddenmodal completion

illusory, (subjective) contour

The undrawn contour appears
to be complemented.

amodal completionocclusion complement

The hidden is complemented
and recognized.
When it is completely hidden,
it is recognized as absent.

modal completion

illusory, (subjective) contour

The undrawn contour appears
to be complemented.

amodal completionocclusion complement

The hidden is complemented
and recognized.
When it is completely hidden,
it is recognized as absent.

Representationis created froma insufﬁcient
information.

modal completion

illusory, (subjective) contour

The undrawn contour appears
to be complemented.

amodal completionocclusion complement

The hidden is complemented
and recognized.
When it is completely hidden,
it is recognized as absent.

Representationis created froma insufﬁcient
information.
The more information
missing, the more
the expression will
make use of viewers
cognitive faculties.

modal completion

illusory, (subjective) contour

The undrawn contour appears
to be complemented.

amodal completionocclusion complement

The hidden is complemented
and recognized.
When it is completely hidden,
it is recognized as absent.

Representationis created froma insufﬁcient
information.
The more information
missing, the more
the expression will
make use of viewers
cognitive faculties.

interesting大黒大悟／ 2013 ／北海道清里町佐藤晃一 / 2006assignment

Amodal completion typography

Choose a word and design a logo which can bereadable when it is hidden by something.
point

・Design both the word and the hiding object.
・Submit 2 images in digital data.

The unreadable non hidden logo, andthe readable hidden logo.
・Use tools you can use, digital, analog.

6/5 review deadline 6/3 noon.

慶應義塾大学 GIC 2024 自然科学特論 Ⅰ

石川 将也

2024. 5.22（ 水 ）design andMasaya Ishikawa

田谷 修一郎Shuichiro Tayacognition
07 completion