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aircanvas #1

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161 changes: 161 additions & 0 deletions Air Canvas.py
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import numpy as np
import cv2
from collections import deque

def setValues(x):
print("")


# Creating the trackbars needed for adjusting the marker colour
cv2.namedWindow("Color detectors")
cv2.createTrackbar("Upper Hue", "Color detectors", 153, 180,setValues)
cv2.createTrackbar("Upper Saturation", "Color detectors", 255, 255,setValues)
cv2.createTrackbar("Upper Value", "Color detectors", 255, 255,setValues)
cv2.createTrackbar("Lower Hue", "Color detectors", 64, 180,setValues)
cv2.createTrackbar("Lower Saturation", "Color detectors", 72, 255,setValues)
cv2.createTrackbar("Lower Value", "Color detectors", 49, 255,setValues)


# Giving different arrays to handle colour points of different colours
bpoints = [deque(maxlen=1024)]
gpoints = [deque(maxlen=1024)]
rpoints = [deque(maxlen=1024)]
ypoints = [deque(maxlen=1024)]

#assigning index values
blue_index = 0
green_index = 0
red_index = 0
yellow_index = 0

kernel = np.ones((5,5),np.uint8)

colors = [(255, 0, 0), (0, 255, 0), (0, 0, 255), (0, 255, 255)]
colorIndex = 0

#starting the painting window setup
paintWindow = np.zeros((471,636,3)) + 255
paintWindow = cv2.rectangle(paintWindow, (40,1), (140,65), (0,0,0), 2)
paintWindow = cv2.rectangle(paintWindow, (160,1), (255,65), colors[0], -1)
paintWindow = cv2.rectangle(paintWindow, (275,1), (370,65), colors[1], -1)
paintWindow = cv2.rectangle(paintWindow, (390,1), (485,65), colors[2], -1)
paintWindow = cv2.rectangle(paintWindow, (505,1), (600,65), colors[3], -1)

cv2.putText(paintWindow, "CLEAR", (49, 33), cv2.FONT_HERSHEY_DUPLEX, 0.5, (0, 0, 0), 2, cv2.LINE_AA)
cv2.putText(paintWindow, "BLUE", (185, 33), cv2.FONT_ITALIC, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(paintWindow, "GREEN", (298, 33), cv2.FONT_ITALIC, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(paintWindow, "RED", (420, 33), cv2.FONT_ITALIC, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(paintWindow, "YELLOW", (520, 33), cv2.FONT_ITALIC, 0.5, (150,150,150), 2, cv2.LINE_AA)
cv2.namedWindow('Paint', cv2.WINDOW_AUTOSIZE)

cap = cv2.VideoCapture(0)
while True:
ret, frame = cap.read()
#Flipping the frame just for convenience
frame = cv2.flip(frame, 1)
hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)


u_hue = cv2.getTrackbarPos("Upper Hue", "Color detectors")
u_saturation = cv2.getTrackbarPos("Upper Saturation", "Color detectors")
u_value = cv2.getTrackbarPos("Upper Value", "Color detectors")
l_hue = cv2.getTrackbarPos("Lower Hue", "Color detectors")
l_saturation = cv2.getTrackbarPos("Lower Saturation", "Color detectors")
l_value = cv2.getTrackbarPos("Lower Value", "Color detectors")
Upper_hsv = np.array([u_hue,u_saturation,u_value])
Lower_hsv = np.array([l_hue,l_saturation,l_value])

frame = cv2.rectangle(frame, (40,1), (140,65), (122,122,122), -1)
frame = cv2.rectangle(frame, (160,1), (255,65), colors[0], -1)
frame = cv2.rectangle(frame, (275,1), (370,65), colors[1], -1)
frame = cv2.rectangle(frame, (390,1), (485,65), colors[2], -1)
frame = cv2.rectangle(frame, (505,1), (600,65), colors[3], -1)
cv2.putText(frame, "CLEAR ALL", (49, 33), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(frame, "BLUE", (185, 33), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(frame, "GREEN", (298, 33), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(frame, "RED", (420, 33), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
cv2.putText(frame, "YELLOW", (520, 33), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (150,150,150), 2, cv2.LINE_AA)

Mask = cv2.inRange(hsv, Lower_hsv, Upper_hsv)
Mask = cv2.erode(Mask, kernel, iterations=1)
Mask = cv2.morphologyEx(Mask, cv2.MORPH_OPEN, kernel)
Mask = cv2.dilate(Mask, kernel, iterations=1)

cnts,_ = cv2.findContours(Mask.copy(), cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_SIMPLE)
center = None

# Ifthe contours are formed
if len(cnts) > 0:
# sorting the contours to find biggest contour
cnt = sorted(cnts, key = cv2.contourArea, reverse = True)[0]
# Get the radius of the enclosing circle around the found contour
((x, y), radius) = cv2.minEnclosingCircle(cnt)
# Draw the circle around the contour
cv2.circle(frame, (int(x), int(y)), int(radius), (0, 255, 255), 2)
# Calculating the center of the detected contour
M = cv2.moments(cnt)
center = (int(M['m10'] / M['m00']), int(M['m01'] / M['m00']))

#checking if any button above the screen is clicked/cursor hovered to
if center[1] <= 65:
if 40 <= center[0] <= 140: # Clear Button
bpoints = [deque(maxlen=512)]
gpoints = [deque(maxlen=512)]
rpoints = [deque(maxlen=512)]
ypoints = [deque(maxlen=512)]

blue_index = 0
green_index = 0
red_index = 0
yellow_index = 0

paintWindow[67:,:,:] = 255
elif 160 <= center[0] <= 255:
colorIndex = 0 # Blue
elif 275 <= center[0] <= 370:
colorIndex = 1 # Green
elif 390 <= center[0] <= 485:
colorIndex = 2 # Red
elif 505 <= center[0] <= 600:
colorIndex = 3 # Yellow
else :
if colorIndex == 0:
bpoints[blue_index].appendleft(center)
elif colorIndex == 1:
gpoints[green_index].appendleft(center)
elif colorIndex == 2:
rpoints[red_index].appendleft(center)
elif colorIndex == 3:
ypoints[yellow_index].appendleft(center)
else:
bpoints.append(deque(maxlen=512))
blue_index += 1
gpoints.append(deque(maxlen=512))
green_index += 1
rpoints.append(deque(maxlen=512))
red_index += 1
ypoints.append(deque(maxlen=512))
yellow_index += 1

points = [bpoints, gpoints, rpoints, ypoints]
for i in range(len(points)):
for j in range(len(points[i])):
for k in range(1, len(points[i][j])):
if points[i][j][k - 1] is None or points[i][j][k] is None:
continue
cv2.line(frame, points[i][j][k - 1], points[i][j][k], colors[i], 2)
cv2.line(paintWindow, points[i][j][k - 1], points[i][j][k], colors[i], 2)


cv2.imshow("Tracking", frame)
cv2.imshow("Paint", paintWindow)
cv2.imshow("mask",Mask)


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

# Release the camera and all resources
cap.release()
cv2.destroyAllWindows()