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Practice

Explore the role of assumptions and mental mechanisms in visual perception, focusing on the information conveyed by light, shape, and orientation of objects. Discover how our mind processes visual input and fills gaps to make sense of the world.

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Practice

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Presentation Transcript

  1. Practice English Theme 45 Oct 31

  2. Iseki • Information in the light • Shape and orientation of an object • Mental mechanism • Fill the gap in the input • Assumptions • Those which can’t be filled

  3. Ikeda • Light • Contains much information • Mental mechanism • Necessary to be aware of what is seen • Assumptions • Built-in • Learned

  4. Katsurada • Visual processes depends on assumptions • 5=x+y • 3-D geometry • Mental mechanism for recovery

  5. Paragraph1 • Empiricists • Mind = blank slate • Info = out there in the real world • Rationalists • Mind = includes knowledge of the world • Both are true • Visual processes depend on assumptions

  6. Paragraph1b • 5=x+y, solve x without knowing y • Ill-posed problem, but assume y < 1, then x > 4

  7. Paragraph2 • Gibson: much info in the light • Higgins: proof • 5 points matching between 2 images • Horn: analogous proof • Shape from intensity • Needs smooth, matte surface

  8. Paragraph3 • Mental mechanisms • Necessary to be aware of what is seen • A traveling robot must process • get images → recognize and locate obstacles • These processes rely on assumptions

  9. Paragraph4 • Assumptions about the world • Built-in (inborn) • Learned • Both play a part in perception • This chapter: Initial stage of vision • Next chapter: Perception of depth

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