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project_code.py
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project_code.py
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import cv2
import numpy as np
framewidth = 640
frameHeight = 400
cap = cv2.VideoCapture(0)
cap.set(3, framewidth)
cap.set(4, frameHeight)
cap.set(10, 150)
myColors = [[21, 213, 65, 32, 255, 162],
[0, 184, 51, 6, 255, 170],
[82, 182, 22, 158, 255, 138]]
myColorValues = [[0,255,255],
[0,0,204],
[255,128,0]]
myPoints = []
def findColor(img, myColors, myColorValues):
imghsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
count = 0
newPoints =[]
for color in myColors:
lower = np.array(color[0:3])
upper = np.array(color[3:6])
mask = cv2.inRange(imghsv, lower, upper)
x, y = getContours(mask)
cv2.circle(imgResult, (x, y), 10, myColorValues[count], cv2.FILLED)
if x!=0 and y!=0:
newPoints.append([x, y, count])
count +=1
# cv2.imshow(str(color[0]), mask)
return newPoints
def getContours(img):
contours, hierarchy = cv2.findContours(img, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
x, y, w, h = 0, 0, 0, 0
for cnt in contours:
area = cv2.contourArea(cnt)
if area >500:
#cv2.drawContours(imgResult, cnt, -1, (255, 0, 0), 3)
peri = cv2.arcLength(cnt, True)
approx = cv2.approxPolyDP(cnt, 0.02*peri, True)
x, y, w, h = cv2.boundingRect(approx)
return x+w//2,y
def drawOnCanvas(myPoints, myColorValues):
for point in myPoints:
cv2.circle(imgResult, (point[0], point[1]), 10, myColorValues[point[2]], cv2.FILLED)
while True:
sucess, img = cap.read()
imgResult = img.copy()
newPoints = findColor(img, myColors, myColorValues)
if len(newPoints)!= 0:
for newP in newPoints:
myPoints.append(newP)
if len(myPoints)!= 0:
drawOnCanvas(myPoints, myColorValues)
cv2.imshow("result", imgResult)
if cv2.waitKey(1) & 0xFF == ord('q'):
break