1. The Invisible Surface that Glows
Chapter 3
The Invisible Surface that Glows

2. Construction
D. Hoffman suggest that we construct everything that we see
Normal People vs. Mr. S.
Evidence ??
Subjective contours and surfaces

3. Borders vs. Brightness
The Illusions below demonstrate constructing a border without distorting the brightness.

4. Possible Rule
There is a large correlation between symmetry and our ability to construct subjective surfaces.
Support
Disproof

5. Rule 11
Construct subjective figures that occlude only if there are convex cusps.

6. Parallel Lines
Our mind tends to notice parallel lines and assume them to have some sort of relation.

7. Rule 12
If two visual structures have nonaccidental relation, group them and assign them to a common origin.

8. Rule 13
If three or more curves intersect at a common point in an image, interpret as them at a common point in space.
This is why the magic square begins to disappear !!

9. Constructing lines Rods and Cones
Simple and complex cells focus on the orientation of lines.

10. 3D Constuction We are actually able to construct objects.
But this is not limited to illusions printed in this book. We construct everything we see!!

11. Arguments…
Since we all see the same thing we must not construct it.

12. Arguments…
If I construct it, why doesn’t it comply with what I want ??

13. Conclusion
We construct everything we see based on a set of specific rules that allow us all to construct the same objects.
Our visual intelligence is not limited to reality.
Mrs. B