(Homework Solution): [Python] [OpenCV] Fingerprint Verification System Implement the fingerprint verification system from

[Python] [OpenCV] Fingerprint Verification System

Implement the fingerprint verification system from skeleton code: drive.google.com/drive/folders/1TsFGjeIbrZ0p4x7unJD6okz4RODctTdf?usp=sharing

FpSegmentator FpMatcher MnMatcher - segment FpSegmentator - enhance: FpEnhancer - extractor MnExtractor - marcher MnMatcher + segment() segmentedlmg, masklmg + match() similarity + match() similarity FpEnhancer MnExtractor - binlmg: Binarizer - skeletonlmg Skeletonizer + enhance enhlmg + extract() MnSet GaborFilterbank - gaborFilters list + filter): filteredlmg OfDetector Binarizer Skeletonizer + detect(): ofMat, oflmg + binarize() binlmg + skeletonize) skeletonlmg GaborFilter

FpSegmentator FpMatcher MnMatcher – segment FpSegmentator – enhance: FpEnhancer – extractor MnExtractor – marcher MnMatcher + segment() segmentedlmg, masklmg + match() similarity + match() similarity FpEnhancer MnExtractor – binlmg: Binarizer – skeletonlmg Skeletonizer + enhance enhlmg + extract() MnSet GaborFilterbank – gaborFilters list + filter): filteredlmg OfDetector Binarizer Skeletonizer + detect(): ofMat, oflmg + binarize() binlmg + skeletonize) skeletonlmg GaborFilter

Expert Answer

answers

Code below uploads finger template to database:

import serial, time, datetime

import struct           #Convert between strings and binary data

import sys

import os

import binascii

import mysql.connector

cnx=mysql.connector.connect(user=’root’,password=”,host=’localhost’,database=’fingerdb’)       # connect to MySql database

cur=cnx.cursor()

#ser = serial.Serial(‘/dev/ttyUSB0’,57600)      # serial communication in Linux

ser = serial.Serial(“COM6”, baudrate=9600, timeout=1)   #serial communication in Windows

pack = [0xef01, 0xffffffff, 0x1]        # Header, Address and Package Identifier

def readPacket():       # Function to read the Acknowledge packet

time.sleep(1)

w = ser.inWaiting()

ret = []

if w >= 9:

s = ser.read(9)         # Partial read to get length

ret.extend(struct.unpack(‘!HIBH’, s))

ln = ret[-1]

time.sleep(1)

w = ser.inWaiting()

if w >= ln:

s = ser.read(ln)

form = ‘!’ + ‘B’ * (ln – 2) + ‘H’       # Specifying byte size

ret.extend(struct.unpack(form, s))

return ret

def readPacket1():      # Function to read the Acknowledge packet

time.sleep(1)

w = ser.inWaiting()

ret = []

form = ‘B’ * 700

s = ser.read(700)

t=binascii.hexlify(s)   # convert to hex

u=t[24:]

cur.execute(“insert into fingertb(name,finger) values(‘%s’,’%s’)” %(name,u) )     # upadate database

cnx.commit()

v=binascii.unhexlify(u)

form1=’B’*688

ret1=[]

ret1.extend(struct.unpack(form1, v))

ret.extend(struct.unpack(form, s))

def writePacket(data):          # Function to write the Command Packet

pack2 = pack + [(len(data) + 2)]

a = sum(pack2[-2:] + data)

pack_str = ‘!HIBH’ + ‘B’ * len(data) + ‘H’

l = pack2 + data + [a]

s = struct.pack(pack_str, *l)

ser.write(s)

def verifyFinger():     # Verify Module?s handshaking password

data = [0x13, 0x0, 0, 0, 0]

writePacket(data)

s = readPacket()

return s[4]

def genImg():   # Detecting finger and store the detected finger image in ImageBuffer

data = [0x1]

writePacket(data)

s = readPacket()

return s[4]

def img2Tz(buf):        # Generate character file from the original finger image in ImageBuffer and store the file in CharBuffer1 or CharBuffer2.

data = [0x2, buf]

writePacket(data)

s = readPacket()

return s[4]

def regModel():         # Combine information of character files from CharBuffer1 and CharBuffer2 and generate a template which is stroed back in both CharBuffer1 and CharBuffer2.

data = [0x5]

writePacket(data)

s = readPacket()

return s[4]

def UpChar(buf):        # Upload the character file or template of CharBuffer1/CharBuffer2 to upper computer

data = [0x8,buf]

writePacket(data)

s = readPacket1()

print (“Type done to exit”)

name=raw_input(“Enter name : “)

while (name!=’done’):

if verifyFinger():

print ‘Verification Error’

sys.exit(0)

print ‘Put finger’,

sys.stdout.flush()

time.sleep(1)

while genImg():

time.sleep(0.1)

print ‘.’,

sys.stdout.flush()

print ”

sys.stdout.flush()

if img2Tz(1):

print ‘Conversion Error’

sys.exit(0)

print ‘Put finger again’,

sys.stdout.flush()

time.sleep(1)

while genImg():

time.sleep(0.1)

print ‘.’,

sys.stdout.flush()

print ”

sys.stdout.flush()

if img2Tz(2):

print ‘Conversion Error’

sys.exit(0)

if regModel():

print ‘Template Error’

sys.exit(0)

if UpChar(2):

print ‘Template Error’

sys.exit(0)

name=raw_input(“Enter name : “)

Code below downloads the finger template from database to R305 fingerprint module:

import serial, time, datetime, struct

import sys

import os

import mysql.connector

import binascii

cnx=mysql.connector.connect(user=’root’,password=”,host=’localhost’,database=’fingerdb’)

cur=cnx.cursor()

ser = serial.Serial(“COM6”, baudrate=9600, timeout=1)

pack = [0xef01, 0xffffffff, 0x1]

def readPacket():

time.sleep(1)

w = ser.inWaiting()

ret = []

if w >= 9:

s = ser.read(9) #partial read to get length

ret.extend(struct.unpack(‘!HIBH’, s))

ln = ret[-1]

time.sleep(1)

w = ser.inWaiting()

if w >= ln:

s = ser.read(ln)

form = ‘!’ + ‘B’ * (ln – 2) + ‘H’

ret.extend(struct.unpack(form, s))

return ret

def readPacket1():

time.sleep(1)

w = ser.inWaiting()

time.sleep(1)

pack_str=’B’* 688

cur.execute(“select finger from fingertb where name=’%s'”%name)

row=cur.fetchone()

srow = str(row[0])

v=binascii.unhexlify(srow)

form1=’B’*688

ret1=[]

ret1.extend(struct.unpack(form1, v))

x=ret1

s = struct.pack(pack_str, *x)

ser.write(s)

if store(idno):

print ‘store error’

sys.exit(0)

print “Enrolled successfully at id %d”%j

def writePacket(data):

pack2 = pack + [(len(data) + 2)]

a = sum(pack2[-2:] + data)

pack_str = ‘!HIBH’ + ‘B’ * len(data) + ‘H’

l = pack2 + data + [a]

s = struct.pack(pack_str, *l)

ser.write(s)

def verifyFinger():

data = [0x13, 0x0, 0, 0, 0]

writePacket(data)

s = readPacket()

return s[4]

def DownChar(buf):      # download character file or template from upper computer to the specified buffer of Module

data = [0x9,buf]

writePacket(data)

s = readPacket1()

def store(id):          # store the template of specified buffer (Buffer1/Buffer2) at the designated location of Flash library

data = [0x6, 0x1, 0x0, id]

writePacket(data)

s = readPacket()

return s[4]

name=raw_input(‘enter the name please’)

idno=int(raw_input(‘enter the store id’))

if verifyFinger():              # Verify Password

print ‘Verification Error’

sys.exit(0)

if DownChar(1):

print ‘Template Error’

sys.exit(0)

Code below scans the finger and authenticates:

import serial, time, datetime, struct

import sys

ser = serial.Serial(“COM6″, baudrate=9600, timeout=1)

pack = [0xef01, 0xffffffff, 0x1]

def readPacket():

time.sleep(1)

w = ser.inWaiting()

ret = []

if w >= 9:

s = ser.read(9)         #partial read to get length

ret.extend(struct.unpack(‘!HIBH’, s))

ln = ret[-1]

time.sleep(1)

w = ser.inWaiting()

if w >= ln:

s = ser.read(ln)

form = ‘!’ + ‘B’ * (ln – 2) + ‘H’

ret.extend(struct.unpack(form, s))

return ret

def writePacket(data):

pack2 = pack + [(len(data) + 2)]

a = sum(pack2[-2:] + data)

pack_str = ‘!HIBH’ + ‘B’ * len(data) + ‘H’

l = pack2 + data + [a]

s = struct.pack(pack_str, *l)

ser.write(s)

def verifyFinger():

data = [0x13, 0x0, 0, 0, 0]

writePacket(data)

s = readPacket()

return s[4]

def genImg():

data = [0x1]

writePacket(data)

s = readPacket()

return s[4]

def img2Tz(buf):

data = [0x2, buf]

writePacket(data)

s = readPacket()

return s[4]

def search():   # search the whole finger library for the template that matches the one in CharBuffer1 or CharBuffer2

data = [0x4, 0x1, 0x0, 0x0, 0x0, 0x5]

writePacket(data)

s = readPacket()

return s[4:-1]

if verifyFinger():

print ‘Verification Error’

sys.exit(-1)

print ‘Put finger’,

sys.stdout.flush()

time.sleep(1)

for _ in range(5):

g = genImg()

if g == 0:

break

print ‘.’,

sys.stdout.flush()

print ”

sys.stdout.flush()

if g != 0:

sys.exit(-1)

if img2Tz(1):

print ‘Conversion Error’

sys.exit(-1)

r = search()

print ‘Search result’, r

if r[0] == 0 :

print ‘Authentication Successful’

sys.exit(0)

else:

print ‘Authentication fail’

sys.exit(1)

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