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Virtual_Mouse.py
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Virtual_Mouse.py
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# -*- coding: utf-8 -*-
"""
Created on Tue Jan 16 23:58:20 2018
@author: Sourav
"""
import cv2
import mouse
import numpy as np
import math
import wx
try:
del app;
except:
pass;
#function to reduce flickering
def isPointClose(x1,y1,x2,y2,scale):
d=math.sqrt((x1-x2)**2+(y1-y2)**2);
if d<=scale: #length<=scale?
return True;
else :
return False;
#if __name__ == "__main__":
cap=cv2.VideoCapture(0);#'http://192.168.0.101:4747/mjpegfeed');
bg=cv2.flip(cap.read()[1],1);
w=np.shape(bg)[1];
h=np.shape(bg)[0];
bg=bg[1:h-199,250:w].copy();
app=wx.App(False);
(sx,sy)=wx.GetDisplaySize();
########################
#font = cv2.FONT_HERSHEY_SIMPLEX;
#low_range=np.array([123,112,4]); #hand color thresholds
#high_range=np.array( [250,180,124]);
########################
mouseOn=0;
while True:
frame=cv2.flip(cap.read()[1],1);
roi=frame[1:h-199,250:w].copy();
temp_roi=roi.copy();
fmask=cv2.absdiff(bg,roi,0);
fmask=cv2.cvtColor(fmask,cv2.COLOR_BGR2GRAY);
fmask=cv2.threshold(fmask,10,255,0)[1];
####### Morphological Processing #########
fmask=cv2.erode(fmask,cv2.getStructuringElement(cv2.MORPH_ERODE,(2,2)),iterations=2);
mask1=cv2.morphologyEx(fmask,cv2.MORPH_CLOSE,\
cv2.getStructuringElement(cv2.MORPH_ELLIPSE,(4,4)));
mask1=cv2.erode(mask1,cv2.getStructuringElement(cv2.MORPH_ERODE,(2,2)),iterations=2);
cv2.imshow('mask1',mask1);
fg_frame=cv2.bitwise_and(roi,roi,mask=mask1);
cv2.imshow('fg_frame',fg_frame);
gr_frame=cv2.cvtColor(fg_frame,cv2.COLOR_BGR2GRAY);
gr_frame=cv2.blur(gr_frame,(10,10));
bw_frame=cv2.threshold(gr_frame,50,255,0)[1];
############ Tracking the hand contour ################
con=cv2.findContours(bw_frame,cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)[0];
try:
my_con=max(con,key=cv2.contourArea);
except:
my_con=np.array([[[1,0],[1,2],[2,3]]],dtype=np.int32);
#pass;
try:
if cv2.contourArea(my_con)>90:
hull=cv2.convexHull(my_con,True);
leftmost = tuple(hull[hull[:,:,0].argmin()][0])
rightmost = tuple(my_con[my_con[:,:,0].argmax()][0])
topmost = tuple(hull[hull[:,:,1].argmin()][0])
bottommost = tuple(my_con[my_con[:,:,1].argmax()][0])
temp=bottommost[0]+30 #getting the bottom middle of the hand
cv2.line(roi,topmost,(topmost[0],h-280),(0,242,225),2);
cv2.line(roi,leftmost,(topmost[0],bottommost[1]-80),(0,242,225),2);
cv2.circle(roi,topmost,5,(255,0,0),-1);
cv2.circle(roi,leftmost,5,(0,120,255),-1);
cv2.circle(roi,(temp,bottommost[1]),5,(230,0,255),-1);
###################### angle calculate #####################
x1=topmost[0];y1=topmost[1];
x2=bottommost[0]+20;y2=bottommost[1];
x3=leftmost[0];y3=leftmost[1];
m1=(y2-y1)/(x2-x1)
m2=(y3-y2)/(x3-x2)
tan8=math.fabs((m2-m1)/(1+m1*m2));
angle=math.atan(tan8)*180/math.pi;
############################################################
#angle = math.atan2(y2 - y1, x2 - x1) * 180.0 / math.pi;
length=math.sqrt(math.pow((y2-y1),2)+math.pow((x2-x1),2))
#print(angle);
if length<50:
continue
################### get original pixel location #############
x=sx-((topmost[0]-50)*sx/(w-340));
y=(topmost[1]*sy/(h-281));
mouse.move(sx-x,y,absolute=True, duration=.1);
cv2.putText(roi,str('%d,%d'%(sx-x,y)),topmost, cv2.FONT_HERSHEY_SIMPLEX, .5,(255,255,255),1,cv2.LINE_AA)
#################### Clicking the mouse ########################
if angle<15:
mouse.click(button='left'); # uncomment to activate the left click
print('left clicked');
pass
else:
pass
except:
pass;
frame[1:h-199,250:w]=roi;
cv2.rectangle(frame,(250,1),(w-1,h-200),(0,255,0),2);
cv2.rectangle(frame,(300,1),(w-40,h-280),(255,0,0),2);
cv2.imshow('frame',frame);
if cv2.waitKey(2)==ord('r'):
print('Background reset')
bg=temp_roi;
elif cv2.waitKey(2)==27:
break;
#%%############# Releasing the resources ##############
cv2.destroyAllWindows();
cap.release();