List of Figures

1. Structure of the human retina.
2. Gaussian noise
3. Section of Resistive Grid.
4. One Dimensional Resistive Grid.
5. Use of multiple resistive grids to achieve different filter effects
6. Ideal resistive fuse characteristic
7. Chua Resistor
8. Chua Resistor Theoretical Characteristic
9. Four Transistor Resistive Fuse Characteristic
10. Four Transistor Resistive Fuse Implementation
11. Seven Transistor Resistive Fuse
12. Seven Transistor Resistive Fuse Common Mode Dependency
13. Eleven Transistor Resistive Fuse
14. Eleven Transistor Resistive Fuse Common Mode Dependency
15. Eleven Transistor Resistive Fuse Bias Current Dependency
16. MOSFET differential pair characteristic
17. Six transistor resistive fuse
18. Six transistor resistive fuse characteristic
19. Simple differential pair model.
20. Response of Resistive Fuse Network to Spike Input
21. Measurement of Characteristic Length from Network Response.
22. Resistive Fuse Network Cutoff Behaviour
23. Simulation Results of Six Pixel Array.
24. Resistive Fuse Circuit with two stable solutions.
25. Transfer function of Resistive Fuse Circuit.
26. Simulation Results of Six Pixel Array.
27. Simulation of Larger Network.
28. Image of Mandrill with Ideal Segmentation.
29. Definition of Spatial Gradients.
30. Reinforcement of neighbouring edge elements.
31. Inhibition of Neighbouring Edge Elements.
32. Effect of Injecting Current into Differential Pair Output Node.
33. Resistive Connection between Adjacent Resistive Fuses.
34. Transistor Circuit to replace Resistive Connection.
35. Simulation Results for Six Pixel Array.
36. Response of New and Old Networks to Vertical Line.
37. Modification to Reduce Border Errors.
38. Response of New and Old Networks to Diagonal Line.
39. Response of New and Old Networks to Circle.
40. Response of New and Old Networks to Triangle.
41. Response of Resistive Fuse Grid to Motion.
42. Response of New Resistive Fuse Grid to Motion.
43. Response of New and Old Networks to Motion.
44. Eight-Way Connected Resistive Grid.
45. Edges Showing Staircasing due to Large Gradient
46. Situations in which Horizontal and Vertical Edges Interact.
47. Network Connections for Horizontal and Vertical Interaction.
48. Lines in a Hexagonal Grid.
49. Connections in a Hexagonal Grid.
50. Gradients that are Seen by Two Edge Elements.
51. Two Random Edge Elements in a Random Grid.