Deligence Technologies
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Person Counting System Using Opencv and Python

In this person counting system using Opencv and Python project, we are using one Raspberry Pi and one USB camera for this project.

IntermediateProtip3.5 hours3,036
Person Counting System Using Opencv and Python

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Schematics

Schematics

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Code

Project Code

Python
Here is a Project Code
import argparse
import datetime
import imutils
import math

import cv2
import numpy as np

width = 800

textIn = 0
textOut = 0

def testIntersectionIn(x, y):

    res = -450 * x + 400 * y + 157500
    if((res >= -550) and  (res < 550)):
        print (str(res))
        return True
    return False



def testIntersectionOut(x, y):
    res = -450 * x + 400 * y + 180000
    if ((res >= -550) and (res <= 550)):
        print (str(res))
        return True

    return False

camera = cv2.VideoCapture(0)

firstFrame = None


while True:

    (grabbed, frame) = camera.read()
    text = "Unoccupied"


    if not grabbed:
        break

    frame = imutils.resize(frame, width=width)
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    gray = cv2.GaussianBlur(gray, (21, 21), 0)


    if firstFrame is None:
        firstFrame = gray
        continue


    frameDelta = cv2.absdiff(firstFrame, gray)
    thresh = cv2.threshold(frameDelta, 25, 255, cv2.THRESH_BINARY)[1]

    thresh = cv2.dilate(thresh, None, iterations=2)
    _, cnts, _ = cv2.findContours(thresh.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

    for c in cnts:
        if cv2.contourArea(c) < 12000:
            continue

        (x, y, w, h) = cv2.boundingRect(c)
        cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 255, 0), 2)

        cv2.line(frame, (width / 2, 0), (width, 450), (250, 0, 1), 2) #blue line
        cv2.line(frame, (width / 2 - 50, 0), (width - 50, 450), (0, 0, 255), 2)#red line


        rectagleCenterPont = ((x + x + w) /2, (y + y + h) /2)
        cv2.circle(frame, rectagleCenterPont, 1, (0, 0, 255), 5)

        if(testIntersectionIn((x + x + w) / 2, (y + y + h) / 2)):
            textIn += 1

        if(testIntersectionOut((x + x + w) / 2, (y + y + h) / 2)):
            textOut += 1

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

    cv2.putText(frame, "In: {}".format(str(textIn)), (10, 50),
                cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
    cv2.putText(frame, "Out: {}".format(str(textOut)), (10, 70),
                cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
    cv2.putText(frame, datetime.datetime.now().strftime("%A %d %B %Y %I:%M:%S%p"),
                (10, frame.shape[0] - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.35, (0, 0, 255), 1)
    cv2.imshow("Security Feed", frame)

camera.release()
cv2.destroyAllWindows()

Credits

Deligence Technologies

Deligence Technologies

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IoT & Embedded Development team

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