Retinal Prosthesis Dissertation - Student Home Pages

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[1] R = 11111111 [2] R = 000 [3] R = 000 [4] R = 000 [5] R = 11111111 [6] R = 11111111 [7] R = 11111111 [8] R = 01111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 01111111 G = 000 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 B = 01111111 [9] R = 000 [10] R = 11111111 [11] R = 000 [12] R = 000 [13] R = 000 [14] R = 11111111 [15] R = 11111111 [16] R = 11111111 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 01111111 B = 000 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 [17] R = 000 [18] R = 000 [19] R = 11111111 [20] R = 000 [21] R = 000 [22] R = 000 [23] R = 11111111 [24] R =11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 B = 11111111 B = 000 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 [25] R = 000 [26] R = 000 [27] R = 000 [28] R = 11111111 [29] R = 000 [30] R = 000 [31] R = 000 [32] R = 11111111 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 B = 11111111 B = 11111111 B = 000 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 [33] R = 11111111 [34] R = 000 [35] R = 000 [36] R = 000 [37] R = 11111111 [38] R = 000 [39] R = 000 [40] R = 000 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 111111111 G = 000 G = 11111111 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 B = 000 B = 11111111 B = 11111111 [41] R = 11111111 [42] R = 11111111 [43] R = 000 [44] R = 000 [45] R = 000 [46] R = 11111111 [47] R = 000 [48] R = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 B = 000 B = 11111111 [49] R = 11111111 [50] R = 11111111 [51] R = 11111111 [52] R = 000 [53] R = 000 [54] R = 000 [55] R = 11111111 [56] R = 000 G = 01111111 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 B = 000 [57] R = 01111111 [58] R = 11111111 [59] R = 11111111 [60] R = 11111111 [61] R = 000 [62] R = 000 [63] R = 000 [64] R = 11111111 G = 000 G = 01111111 G = 11111111 G = 000 G = 11111111 G = 000 G = 11111111 G = 000 B = 01111111 B = 000 B = 000 B = 11111111 B = 11111111 B = 11111111 B = 000 B = 000 Figure 32 Colour composition 73 of 200
3.8.1 Other test images For other behavioural and structural work smaller test images based on subsets of the 32 by 32 test image may be used; in particular for receiver implementation the 4 by 4 test image i.e. 16 pixels will be used. Red Green Blue Cyan Magenta Yellow Orange Indigo Green Red Green Blue Cyan Magenta Yellow Orange Figure 33 sixteen pixel image 3.9 Biphasic pulse In order to ensure zero charge build up on nerve cells and allow chemical interactions to occur; when the implant is driven by the electronics biphasic pulses must be formed.[57] The shape of the proposed biphasic pulse for this work; in comparison to spike representation maximum pulsing, is as shown in figure 32. 74 of 200
Page 1 and 2:
An Address Event Representation (AE
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Abstract\Foreword This document pro
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Contents An Address Event Represent
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--Appendix E FPGA Outputs .........
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Figure 48 receiver rtl_16 .........
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Chapter 1 Introduction/research aim
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foveola (fovea pit) there is a one
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NB that the photoreceptors of the f
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electrodes to be driven implies sti
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Typically AER is used as a multi se
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Real time - innerpulse relationship
Page 23 and 24: the post processing stage of this w
Page 25 and 26: Appendix C: FPGA Sender chip Append
Page 27 and 28: Red (660nm) R / G Red ( 620750nm )
Page 29 and 30: 1 0 1 1 0 0 1 1 0 1 1 1 Table 3 `xo
Page 31 and 32: Adaptive linear combiner w 0 1 Let
Page 33 and 34: is correct (one class) and -1 (the
Page 35 and 36: x2 Linear separation 1.00 0.90 0.80
Page 37 and 38: This is also the Cartesian co-ordin
Page 39 and 40: 2.4 Comparison to Frame Based Repre
Page 41 and 42: Typical GOP structure (Typically an
Page 43 and 44: point is an event occurs for spike
Page 45 and 46: 2.5.1 Files in Appendix A “ycut.m
Page 47 and 48: MPEG-2 setup AER setup Camera Camer
Page 49 and 50: 2.6.2 FPGA representation of epi_re
Page 51 and 52: Chapter 3 Concepts An epiretinal im
Page 53 and 54: AER Transmission lines INPUT image
Page 55 and 56: electrical pulse generated is calle
Page 57 and 58: Figure 25 Retinal colour processing
Page 59 and 60: cells to modulate this luminance pa
Page 61 and 62: L+ M- + - R-G G-R B-Y Y-B Note: L(r
Page 63 and 64: 3.6.2 Retinal operations Light reac
Page 65 and 66: quantified by number of cycles pres
Page 67 and 68: (Where * is the convolution operato
Page 69 and 70: T frame C * R * M p Tpacket i.e. Tp
Page 71 and 72: e relaxed and from (2) the temporal
Page 73: one tw o three four five six seven
Page 77 and 78: Tspike (4ms) Ispike (16ms: interspi
Page 79 and 80: INDIGO ORANGE YELLOW MAGENTA CYAN B
Page 81 and 82: 4.1 Sender concepts From chapter on
Page 83 and 84: pixel must equate to 0.02/1024 i.e.
Page 85 and 86: Clocking hierarchy (32 by 32 image)
Page 87 and 88: the number of address bits will alt
Page 89 and 90: Translation report, (3) Map report,
Page 91 and 92: 90 of 200 CLKIN_IN RST_IN pixelcloc
Page 93 and 94: incorporate colour planes for each
Page 95 and 96: Chapter 5 Receiver chip The followi
Page 97 and 98: 5.2 Power Analysis Xilinx FPGAs hav
Page 99 and 100: 98 of 200 produce_wire _outputs Ins
Page 101 and 102: 5.5.1 Incoming (short) AER stream T
Page 103 and 104: Receiver Red plane r1 DAC (4-bit) T
Page 105 and 106: 5.8.2 Electrode size and positionin
Page 107 and 108: sequence of wiring from the receive
Page 109 and 110: does this is to inject an equivalen
Page 111 and 112: 6.2.2 Envisaged retinal array This
Page 113 and 114: a monochrome camera in this space i
Page 115 and 116: 632mW) thus extending battery life
Page 117 and 118: For the implemented/structural case
Page 119 and 120: The sender and receiver circuitry p
Page 121 and 122: Bibliography 1. Woodburn R. Murray
Page 123 and 124: 38. Banks, D.J., P. Degenaar, and C
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74. Freeman, J.A., Skapura, D. M.,
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109. Weiland, J.D., et al. Progress
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141. Indiveri G. Chicca E. Douglas
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172. Singh, P.R., et al. A matched
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206. Stieglitz, T., et al. Developm
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xmixedsource; numberOfFrames = 8; f
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%check {k} =imread (['D:\abc\subima
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%Two for loops the first (outer loo
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%Row break rr6c1=000; rr6c2=000; rr
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--Appendix B FPGA Test setup librar
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stream_blue_pulse_count: out std_lo
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DVI_XCLK_P clock_25MHz, spike_cloc
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use IEEE.STD_LOGIC_UNSIGNED.ALL; --
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--Appendix C FPGA Sender chip libra
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-- else -- resit '1', CLKDV_OUT =>
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FPGA Receiver (structural) chip --A
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FPGA Receiver (structural) chip --E
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FPGA Receiver (structural) chip --r
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FPGA Receiver (structural) chip blu
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FPGA Receiver (structural) chip con
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FPGA Receiver (structural) chip --s
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FPGA Receiver (structural) chip --
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FPGA Receiver (structural) chip --
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FPGA Receiver (structural) chip IO_
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Number with an unused LUT 18 219 8%
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IO Utilization: Number of IOs: 26 N
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The Slice Logic Distribution report
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Router effort level (-rl): Standard
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oming_clock | HOLD | 0.519ns| | 0|
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Part | xc5vlx50tff1136-3 | Process
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Selected Device: 5vlx50tff1136-3 Sl
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used in combination with MAP -timin
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Data Sheet report: ----------------
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“For these implantable devices to
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microstimulator with a 1:4 demultip
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“Medical experiments have estimat
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A Retinomorphic Vision System “In
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“The common language of neuromorp
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