3.3: Questions

Chapter 3 Questions

1. Differentiate between passive and active sensors.

2. What is the energy in a photon?

3. How are chemo-reception and photo-reception similar?

4. Describe the three most significant imperfections in biological vision systems and what causes them.

5. Discuss the relationship between connectivity and spatial and temporal acuity

6. What is coarse coding?

7. What are the three information domains in which vision systems extract environmental information?

8. Describe the three major compound eye designs.

9. Give some examples of visual scanning systems in the animal kingdom. What are the advantages and disadvantages of such a system?

10. Why is the retina considered a part of the brain, since the two organs are separated by distance and other components (optic nerve, LGN, etc.)?

11. What are the anatomical similarities between the retina, LGN, and the brain?

12. Explain the serial/planar duality that exists in biological vision systems.

13. Describe the encoding and decoding levels (in orders of magnitude) in the various organs within the primate vision system.

14. Name the five major cell types (layers) in the retina. Which three are connected to the triad synapse?

15 Give the three primary vision information channels in primate vision.

16. DoG or LoG filters are primarily used to model what part of the vision system?

17. What are the commonalities in color vision models concerning luminance and color?

18. What is the photoreceptor mosaic, and how is that like an artistic mosaic?

19. What is the difference between LoG and DoG filters?

20. Discuss degrees of freedom with LoG and DoG filters?

21. Compare and contrast vision system pathways with a conventional wavelet filter bank.

22. How is coarse coding manifested in the vision system?

23. When contemplating a new communication encoding scheme, it is very important to choose an orthogonal basis. But a typical biological set of basis functions are not mutually orthogonal. What is the implication?

24. Why are we so interested in biology if natural basis functions are not orthogonal?

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