A License Plate Recognition and Speed Detection System - Index of

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figure below; a light source, video camera, computer, serial interface circuit board, and radar gun. Light Source Video Camera Computer Serial Interface Circuit Board License Plate Recognition / Speed Violation System The light source illuminates the license plate of a passing vehicle. The video camera captures images of the front of the vehicle as the vehicle passes and sends those images to a computer. The radar gun detects the speed of the vehicle and sends speed information to the serial interface circuit board (SICB). The SICB provides a means of passing the speed information to the serial port of the computer. The computer processes images received from the camera and detects the license plate characters from the images. The computer also receives speed information sent by the SICB. The vehicle license plate number and speed are recorded in a file on the computer. Our LPR/SD system process flow is depicted in the figure below. 32 Radar Gun Fig. 22 LPR/SD system components
LPR/SD System Process Flow Retrieve picture of throughway Does license plate exist in image? Get vehicle speed Detect license plate characters Record time, vehicle speed, and vehicle license plate numbers 33 YES Fig. 23 LPR/SD system process flow NO
Page 1 and 2: A License Plate Recognition and Spe
Page 3 and 4: I. Abstract Since the 1980’s law
Page 5 and 6: II. Introduction The purpose of thi
Page 7 and 8: III. License Plate Recognition Conc
Page 9 and 10: III.A. LPR Light Source There are s
Page 11 and 12: eflective paint effect greatly incr
Page 13 and 14: Uniform and Constant To be as unifo
Page 15 and 16: “Horizontal angle must not exceed
Page 17 and 18: The video camera has another compon
Page 19 and 20: width is only 5/16” will be 3 pix
Page 21 and 22: signal, such as NTSC, a capture car
Page 23 and 24: choose a trigger that will require
Page 25 and 26: We briefly considered laser rangefi
Page 27 and 28: Fig. 17 Doppler Effect (Ref. 14) Th
Page 29 and 30: In this project, we will be using t
Page 31: V. Our System Design and Implementa
Page 35 and 36: Fig. 25 Image of our LPR/SD system
Page 37 and 38: Our video camera served two functio
Page 39 and 40: V.B.2. Radar Gun The Ramsey Kit Ram
Page 41 and 42: Fig. 31 Assembled Oscillator The mi
Page 43 and 44: up to 100MHz. Once the signal has b
Page 45 and 46: I will discuss the pathway the inpu
Page 47 and 48: Fig. 35 Comparator Operation The si
Page 49 and 50: V.B.3. Serial Interface Circuit Boa
Page 51 and 52: we set pins 8 to 15 as input pins a
Page 53 and 54: Application Main Window Fig. 37 LPR
Page 55 and 56: Fig. 40 LPR.exe application windows
Page 57 and 58: Serial library was written by Ramon
Page 59 and 60: W1, B2, B3, B4, W5, B6, B7, B8, B9,
Page 61 and 62: characters were first extracted. Th
Page 63 and 64: Plate Number - 791GPB Test Results
Page 65 and 66: VI. Additional Applications The lic
Page 67 and 68: needed to communicate with the traf
Page 69 and 70: Local Network Fig. 50 LPR applicati
Page 71 and 72: VII. State of the Art Commercial Sy
Page 73 and 74: 100 MHz wide or 200 MHz wide. Since
Page 75 and 76: As with any new technology affectin
Page 77 and 78: law, a warrant-less crime must be c
Page 79 and 80: experience high traffic volumes or
Page 81 and 82: quite a fun experience to build the
Page 83 and 84:
15) Radar Setup: http://mpdc.dc.gov
Page 85 and 86:
Appendix A: Our LPR/SD System Compo
Page 87 and 88:
Appendix B: Commercial Components 8
Page 89 and 90:
MDL LaserAce® IM OEM Laser Modules
Page 91 and 92:
UF500 Infrared Illuminator 91
Page 93 and 94:
HI-TECH Solutions SeeCar Software R
Page 96:
Appendix C: Camera Setup Calculatio
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