txt file won't be written in python in windows, it works on mac
0
I wrote a code that takes a video and recognizes face of a human and calculate the distance of the human from the camera (which is the eye of a robot). I need the data in a txt format so I am writing it in the distance_data.txt but my file is always empty.
I had run the code in a mac computer and it worked perfectly fine and the file was not empty.
import cv2
import time
import numpy as np
person_cascade = cv2.CascadeClassifier('human_recognition.txt')
cap = cv2.VideoCapture('oct23_2.avi')
# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('oct23_2out.avi',fourcc, 20.0, (640,360))
distance_data = open('distance_data.txt','w')
timer=-1
while (cap.isOpened()):
r, frame = cap.read()
if r:
frame = cv2.resize(frame,(640,360)) # Downscale to improve frame rate
gray_frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY) # Haar-cascade classifier needs a grayscale image
cv2.imshow('gray',gray_frame)
#print(gray_frame.type())
rects = person_cascade.detectMultiScale(gray_frame)
max=0
#print(rects)
(x, y, w, h) = rects[0]
cv2.rectangle(frame, (x,y), (x+w ,y+h),(0,255,0),2)
#fshape = frame.shape
#fheight = fshape[0]
#fwidth = fshape[1]
timer=timer+1
xpos=(0.03421)*(w*w)-8.1183*w+521.841
yn=360-y
heightinvid=0.0197377*yn-0.0194
realhieght=((-0.4901)*(heightinvid* heightinvid)+4.4269*heightinvid+8.30356)/ 0.927183854
horizontalp=x+w/2
#print(timer+1 , ",", xpos, )
#if (xpos<=41 and xpos>=40):
#print("height of the human is ", realhieght+149, "or", (-0.000184)*yn*yn+0.08506*yn+8.43461+149)
cm_deviation_in_x=-0.02033898*(320-horizontalp)
#print("Horizontal position of human is ", cm_deviation_in_x, " cm.")
newxpos = format (xpos, '.3f')
distance_data.write("Hi")
distance_data.write(str(newxpos))
distance_data.write(',')
distance_data.write(str(format(cm_deviation_in_x, '.3f')))
distance_data.write("rn")
#print(w)
#print("x position of the human is = ",xpos)
#fourcc = cv2.VideoWriter_fourcc(*'XVID')
#out = cv2.VideoWriter('output25.avi',fourcc, 20.0, (fwidth,fheight))
cv2.imshow("preview", frame)
out.write(frame)
k = cv2.waitKey(10)
#print(w,h)
if k & 0xFF == ord("q"): # Exit condition
break
distance_data.flush()
cap.release()
cv2.destroyAllWindows()
python windows artificial-intelligence
asked Nov 19 '18 at 19:44
nadianadia
82
|
show 2 more comments
0
I wrote a code that takes a video and recognizes face of a human and calculate the distance of the human from the camera (which is the eye of a robot). I need the data in a txt format so I am writing it in the distance_data.txt but my file is always empty.
I had run the code in a mac computer and it worked perfectly fine and the file was not empty.
import cv2
import time
import numpy as np
person_cascade = cv2.CascadeClassifier('human_recognition.txt')
cap = cv2.VideoCapture('oct23_2.avi')
# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('oct23_2out.avi',fourcc, 20.0, (640,360))
distance_data = open('distance_data.txt','w')
timer=-1
while (cap.isOpened()):
r, frame = cap.read()
if r:
frame = cv2.resize(frame,(640,360)) # Downscale to improve frame rate
gray_frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY) # Haar-cascade classifier needs a grayscale image
cv2.imshow('gray',gray_frame)
#print(gray_frame.type())
rects = person_cascade.detectMultiScale(gray_frame)
max=0
#print(rects)
(x, y, w, h) = rects[0]
cv2.rectangle(frame, (x,y), (x+w ,y+h),(0,255,0),2)
#fshape = frame.shape
#fheight = fshape[0]
#fwidth = fshape[1]
timer=timer+1
xpos=(0.03421)*(w*w)-8.1183*w+521.841
yn=360-y
heightinvid=0.0197377*yn-0.0194
realhieght=((-0.4901)*(heightinvid* heightinvid)+4.4269*heightinvid+8.30356)/ 0.927183854
horizontalp=x+w/2
#print(timer+1 , ",", xpos, )
#if (xpos<=41 and xpos>=40):
#print("height of the human is ", realhieght+149, "or", (-0.000184)*yn*yn+0.08506*yn+8.43461+149)
cm_deviation_in_x=-0.02033898*(320-horizontalp)
#print("Horizontal position of human is ", cm_deviation_in_x, " cm.")
newxpos = format (xpos, '.3f')
distance_data.write("Hi")
distance_data.write(str(newxpos))
distance_data.write(',')
distance_data.write(str(format(cm_deviation_in_x, '.3f')))
distance_data.write("rn")
#print(w)
#print("x position of the human is = ",xpos)
#fourcc = cv2.VideoWriter_fourcc(*'XVID')
#out = cv2.VideoWriter('output25.avi',fourcc, 20.0, (fwidth,fheight))
cv2.imshow("preview", frame)
out.write(frame)
k = cv2.waitKey(10)
#print(w,h)
if k & 0xFF == ord("q"): # Exit condition
break
distance_data.flush()
cap.release()
cv2.destroyAllWindows()
python windows artificial-intelligence
asked Nov 19 '18 at 19:44
nadianadia
82
1
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
don't write carriage return, it's automatically added in text modedistance_data.write("rn")=>distance_data.write("n")
– Jean-François Fabre
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
alsodistance_data.flush()should bedistance_data.close()
– Jean-François Fabre
Nov 19 '18 at 19:58
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00
|
show 2 more comments
0
0
0
I wrote a code that takes a video and recognizes face of a human and calculate the distance of the human from the camera (which is the eye of a robot). I need the data in a txt format so I am writing it in the distance_data.txt but my file is always empty.
I had run the code in a mac computer and it worked perfectly fine and the file was not empty.
import cv2
import time
import numpy as np
person_cascade = cv2.CascadeClassifier('human_recognition.txt')
cap = cv2.VideoCapture('oct23_2.avi')
# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('oct23_2out.avi',fourcc, 20.0, (640,360))
distance_data = open('distance_data.txt','w')
timer=-1
while (cap.isOpened()):
r, frame = cap.read()
if r:
frame = cv2.resize(frame,(640,360)) # Downscale to improve frame rate
gray_frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY) # Haar-cascade classifier needs a grayscale image
cv2.imshow('gray',gray_frame)
#print(gray_frame.type())
rects = person_cascade.detectMultiScale(gray_frame)
max=0
#print(rects)
(x, y, w, h) = rects[0]
cv2.rectangle(frame, (x,y), (x+w ,y+h),(0,255,0),2)
#fshape = frame.shape
#fheight = fshape[0]
#fwidth = fshape[1]
timer=timer+1
xpos=(0.03421)*(w*w)-8.1183*w+521.841
yn=360-y
heightinvid=0.0197377*yn-0.0194
realhieght=((-0.4901)*(heightinvid* heightinvid)+4.4269*heightinvid+8.30356)/ 0.927183854
horizontalp=x+w/2
#print(timer+1 , ",", xpos, )
#if (xpos<=41 and xpos>=40):
#print("height of the human is ", realhieght+149, "or", (-0.000184)*yn*yn+0.08506*yn+8.43461+149)
cm_deviation_in_x=-0.02033898*(320-horizontalp)
#print("Horizontal position of human is ", cm_deviation_in_x, " cm.")
newxpos = format (xpos, '.3f')
distance_data.write("Hi")
distance_data.write(str(newxpos))
distance_data.write(',')
distance_data.write(str(format(cm_deviation_in_x, '.3f')))
distance_data.write("rn")
#print(w)
#print("x position of the human is = ",xpos)
#fourcc = cv2.VideoWriter_fourcc(*'XVID')
#out = cv2.VideoWriter('output25.avi',fourcc, 20.0, (fwidth,fheight))
cv2.imshow("preview", frame)
out.write(frame)
k = cv2.waitKey(10)
#print(w,h)
if k & 0xFF == ord("q"): # Exit condition
break
distance_data.flush()
cap.release()
cv2.destroyAllWindows()
python windows artificial-intelligence
asked Nov 19 '18 at 19:44
nadianadia
82
I wrote a code that takes a video and recognizes face of a human and calculate the distance of the human from the camera (which is the eye of a robot). I need the data in a txt format so I am writing it in the distance_data.txt but my file is always empty.
I had run the code in a mac computer and it worked perfectly fine and the file was not empty.
import cv2
import time
import numpy as np
person_cascade = cv2.CascadeClassifier('human_recognition.txt')
cap = cv2.VideoCapture('oct23_2.avi')
# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('oct23_2out.avi',fourcc, 20.0, (640,360))
distance_data = open('distance_data.txt','w')
timer=-1
while (cap.isOpened()):
r, frame = cap.read()
if r:
frame = cv2.resize(frame,(640,360)) # Downscale to improve frame rate
gray_frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY) # Haar-cascade classifier needs a grayscale image
cv2.imshow('gray',gray_frame)
#print(gray_frame.type())
rects = person_cascade.detectMultiScale(gray_frame)
max=0
#print(rects)
(x, y, w, h) = rects[0]
cv2.rectangle(frame, (x,y), (x+w ,y+h),(0,255,0),2)
#fshape = frame.shape
#fheight = fshape[0]
#fwidth = fshape[1]
timer=timer+1
xpos=(0.03421)*(w*w)-8.1183*w+521.841
yn=360-y
heightinvid=0.0197377*yn-0.0194
realhieght=((-0.4901)*(heightinvid* heightinvid)+4.4269*heightinvid+8.30356)/ 0.927183854
horizontalp=x+w/2
#print(timer+1 , ",", xpos, )
#if (xpos<=41 and xpos>=40):
#print("height of the human is ", realhieght+149, "or", (-0.000184)*yn*yn+0.08506*yn+8.43461+149)
cm_deviation_in_x=-0.02033898*(320-horizontalp)
#print("Horizontal position of human is ", cm_deviation_in_x, " cm.")
newxpos = format (xpos, '.3f')
distance_data.write("Hi")
distance_data.write(str(newxpos))
distance_data.write(',')
distance_data.write(str(format(cm_deviation_in_x, '.3f')))
distance_data.write("rn")
#print(w)
#print("x position of the human is = ",xpos)
#fourcc = cv2.VideoWriter_fourcc(*'XVID')
#out = cv2.VideoWriter('output25.avi',fourcc, 20.0, (fwidth,fheight))
cv2.imshow("preview", frame)
out.write(frame)
k = cv2.waitKey(10)
#print(w,h)
if k & 0xFF == ord("q"): # Exit condition
break
distance_data.flush()
cap.release()
cv2.destroyAllWindows()
python windows artificial-intelligence
python windows artificial-intelligence
asked Nov 19 '18 at 19:44
nadianadia
82
asked Nov 19 '18 at 19:44
nadianadia
82
asked Nov 19 '18 at 19:44
nadianadia
82
asked Nov 19 '18 at 19:44
nadianadia
82
asked Nov 19 '18 at 19:44
nadianadia
82
82
1
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
don't write carriage return, it's automatically added in text modedistance_data.write("rn")=>distance_data.write("n")
– Jean-François Fabre
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
alsodistance_data.flush()should bedistance_data.close()
– Jean-François Fabre
Nov 19 '18 at 19:58
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00
|
show 2 more comments
1
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
don't write carriage return, it's automatically added in text modedistance_data.write("rn")=>distance_data.write("n")
– Jean-François Fabre
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
alsodistance_data.flush()should bedistance_data.close()
– Jean-François Fabre
Nov 19 '18 at 19:58
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00
1
1
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
don't write carriage return, it's automatically added in text mode
distance_data.write("rn") => distance_data.write("n")– Jean-François Fabre
Nov 19 '18 at 19:57
don't write carriage return, it's automatically added in text mode
distance_data.write("rn") => distance_data.write("n")– Jean-François Fabre
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
also
distance_data.flush() should be distance_data.close()– Jean-François Fabre
Nov 19 '18 at 19:58
also
distance_data.flush() should be distance_data.close()– Jean-François Fabre
Nov 19 '18 at 19:58
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00
|
show 2 more comments
0
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1
Are you sure this is even a writing problem? Do you know for sure the capture file is being read properly in Windows? Does it exist? Do you actually enter the while loop? Do you make it past the "if r:" statement?
– PhilB
Nov 19 '18 at 19:50
don't write carriage return, it's automatically added in text mode
distance_data.write("rn")=>distance_data.write("n")– Jean-François Fabre
Nov 19 '18 at 19:57
yes I do enter the loop because I could print all the data in the console. I do however get this error at the end: (x, y, w, h) = rects[0] IndexError: tuple index out of range @PhilB
– nadia
Nov 19 '18 at 19:57
also
distance_data.flush()should bedistance_data.close()– Jean-François Fabre
Nov 19 '18 at 19:58
@Jean-FrançoisFabre I actually don't know where I should close the file
– nadia
Nov 19 '18 at 20:00