计算机视觉和人类视觉都是怎么进行工作的呢?本章节对此作了介绍,哺乳动物对于这个世界的感应是通过眼睛,眼睛接受视觉信号传输给大脑,大脑接受信息进行信息的处理在反馈给我们,而计算机视觉呢,这里计算机就充当了大脑的角色,镜头用来捕捉信号等,在此文中对两者也做了对比。

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1. A Primer on Human Vision: Insights and Inspiration for Computer Vision Guest  Lecture:  Marius  Cătălin  Iordan     CS  131  -­‐  Computer  Vision:  Foundations  and  Applications   27  October  2014

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3. detection recognition segmentation … ! visual! understanding

4. 1. The Mammalian Visual System • anatomy and processing pathways • from processing to perception Roadmap 23

5. 1. The Mammalian Visual System • anatomy and processing pathways • from processing to perception 2. Early Computation • first stages of information processing • edges: a basis for representing the visual world Roadmap 23

6. 1. The Mammalian Visual System • anatomy and processing pathways • from processing to perception 2. Early Computation • first stages of information processing • edges: a basis for representing the visual world 3. Object Recognition in the Human Visual System • building invariance: pooling and transformation • untangling object representations Roadmap 23

7.Mammalian Visual System anatomy and processing pathways 3 4

8. The “Camera”: Retinal Projection Mammalian Visual System anatomy and processing pathways 3 4

9. The “Camera”: Retinal Projection Mammalian Visual System anatomy and processing pathways 3 4

10. Neuron Mammalian Visual System anatomy and processing pathways 3 5

11. Neuron spikes / s Mammalian Visual System anatomy and processing pathways 3 5

12. figure courtesy of A. Alahi Mammalian Visual System anatomy and processing pathways 3 6

13. From Retina to Cortex world retina (compression) LGN visual cortex (expansion) V1 Mammalian Visual System anatomy and processing pathways 7

14. From Retina to Cortex size of! representation world retina (compression) LGN visual cortex (expansion) V1 Mammalian Visual System anatomy and processing pathways 7

15. Cortex: At Least Two Dozen Visual Areas IT IT Weiner & Grill-Spector (2012) Mammalian Visual System anatomy and processing pathways 8

16. Cortex: At Least Two Dozen Visual Areas plus more: motion areas, “functional” regions, etc. IT IT Weiner & Grill-Spector (2012) Mammalian Visual System anatomy and processing pathways 8

17. Visual Processing vs. Perception IT IT Weiner & Grill-Spector (2012) Mammalian Visual System from processing to perception 9

18. Visual Processing vs. Perception IT IT Weiner & Grill-Spector (2012) Mammalian Visual System from processing to perception 9

19. Visual Processing vs. Perception perception involves integration and higher functions IT IT Weiner & Grill-Spector (2012) Mammalian Visual System from processing to perception 9

20. Mammalian Visual System DiCarlo & Cox (2007) Mammalian Visual System key points 10

21. Mammalian Visual System visual processing is done in stages DiCarlo & Cox (2007) Mammalian Visual System key points 10

22. Mammalian Visual System visual processing is done in stages but it is not synonymous with perception DiCarlo & Cox (2007) Mammalian Visual System key points 10

23. 2. Early Computation local information processing Early Computation 11 3

24. Retinal Projection picture is inverted, but spatial relationships are preserved Early Computation first stages of processing 12 3

25. Receptive Fields extract similar features at each position in the visual field receptive fields figure adapted from Ebner & Hameroff (2011) Early Computation first stages of processing 13 3

26. Receptive Fields extract similar features at each position in the visual field ganglion cells center-surround receptive fields figure adapted from Ebner & Hameroff (2011) Early Computation first stages of processing 14 3

27. Receptive Fields extract similar features at each position in the visual field ON ganglion cells Early Computation first stages of processing 15 3

28. Receptive Fields extract similar features at each position in the visual field ON ganglion cells Early Computation first stages of processing 15 3

29. figure courtesy of A. Alahi Early Computation first stages of processing 16 3