motion_detector.py

import cv2, time, keyboard, pandas
from datetime import datetime
from bokeh.plotting import figure
from bokeh.io import output_file,show
from bokeh.models import HoverTool, ColumnDataSource

first_frame=None
status_list=[None,None]
times=[]
df=pandas.DataFrame(columns=["Start","End"])
video=cv2.VideoCapture(0)

while True:
    check, frame = video.read()
    status=0
    gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    gray=cv2.GaussianBlur(gray,(21,21),0)

    if first_frame is None:
        first_frame=gray
        continue

    delta_frame=cv2.absdiff(first_frame,gray)
    thresh_frame=cv2.threshold(delta_frame,30,255,cv2.THRESH_BINARY)[1]
    thresh_frame=cv2.dilate(thresh_frame,None,iterations=2)

    (cnts,_) = cv2.findContours(thresh_frame.copy(),cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)

    for countour in cnts:
        if cv2.contourArea(countour) < 10000:
            continue
        status=1

        (x,y,w,h)=cv2.boundingRect(countour)
        cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),3)
    status_list.append(status)
    if status_list[-1]==1 and status_list[-2]==0:
        times.append(datetime.now())
    if status_list[-1]==0 and status_list[-2]==1:
        times.append(datetime.now())

    #cv2.imshow("Gray Frame",gray)
    #cv2.imshow("Delata Frame",delta_frame)
    #cv2.imshow("Threshould",thresh_frame)
    cv2.imshow("Color Frame",frame)
    cv2.waitKey(1)

    if keyboard.is_pressed('q'):
        if status==1:
            times.append(datetime.now())
        break

#print(status_list)
#print(times)

for i in range(0,len(times),2):
    df=df.append({"Start":times[i],"End":times[i+1]},ignore_index=True)

df["Start_string"]=df["Start"].dt.strftime("%Y-%m-%d %H:%M:%S")
df["End_string"]=df["End"].dt.strftime("%Y-%m-%d %H:%M:%S")

cds=ColumnDataSource(df)

p=figure(x_axis_type="datetime",height=100,width=500,sizing_mode = "scale_width",title="Motion Graph")
p.yaxis.minor_tick_line_color=None
p.yaxis.ticker.desired_num_ticks=1

hover=HoverTool(tooltips=[("Start","@Start_string"),("End","@End_string")])
p.add_tools(hover)

q=p.quad(left="Start",right="End",bottom=0,top=1,color="green",source=cds)
output_file("Graph.html")
show(p)

video.release()
cv2.destroyAllWindows()