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Crop ROI from Face-Eye detection

Hey there guys!

I'm a newbie in python thing. I'm trying to crop the ROI from video stream. But i got no result at the moment. The code i'm using is:

import numpy as np import cv2

face_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_frontalface_default.xml') eye_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_eye.xml')

cap = cv2.VideoCapture(0)

while 1: ret, img = cap.read() gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) faces = face_cascade.detectMultiScale(gray, 1.3, 5)

for (x,y,w,h) in faces:
    cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
    roi_gray = gray[y:y+h, x:x+w]
    roi_color = img[y:y+h, x:x+w]

    eyes = eye_cascade.detectMultiScale(roi_gray)
    for (ex,ey,ew,eh) in eyes:
        cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

cv2.imshow('img',img)
k = cv2.waitKey(30) & 0xff
if k == 27:
    break

cap.release() cv2.destroyAllWindows()

crop_img = roi_color[?] cv2.imwrite("path", roi_color)

Any advice is welcome! Have a nice day

Crop ROI from Face-Eye detection

Hey there guys!

I'm a newbie in python thing. I'm trying to crop the ROI from video stream. But i got no result at the moment. The code i'm using is:

import numpy as np import cv2

face_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_frontalface_default.xml') eye_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_eye.xml')

cap = cv2.VideoCapture(0)

while 1: ret, img = cap.read() gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) faces = face_cascade.detectMultiScale(gray, 1.3, 5)

for (x,y,w,h) in faces:
    cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
    roi_gray = gray[y:y+h, x:x+w]
    roi_color = img[y:y+h, x:x+w]

    eyes = eye_cascade.detectMultiScale(roi_gray)
    for (ex,ey,ew,eh) in eyes:
        cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

cv2.imshow('img',img)
k = cv2.waitKey(30) & 0xff
if k == 27:
    break

cap.release() cv2.destroyAllWindows()

crop_img = roi_color[?] cv2.imwrite("path", roi_color)

Any advice is welcome! Have a nice day

click to hide/show revision 3
No.3 Revision

updated 2016-10-23 03:57:16 -0500

berak gravatar image

Crop ROI from Face-Eye detection

Hey there guys!

I'm a newbie in python thing. I'm trying to crop the ROI from video stream. But i got no result at the moment. The code i'm using is:

import numpy as np
import cv2

cv2 face_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_frontalface_default.xml') eye_cascade = cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_eye.xml')

cv2.CascadeClassifier('C:\opencv\sources\data\haarcascades\haarcascade_eye.xml') cap = cv2.VideoCapture(0)

cv2.VideoCapture(0) while 1: ret, img = cap.read() gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) faces = face_cascade.detectMultiScale(gray, 1.3, 5)

5)

    for (x,y,w,h) in faces:
     cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
     roi_gray = gray[y:y+h, x:x+w]
     roi_color = img[y:y+h, x:x+w]

     eyes = eye_cascade.detectMultiScale(roi_gray)
     for (ex,ey,ew,eh) in eyes:
         cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

 cv2.imshow('img',img)
 k = cv2.waitKey(30) & 0xff
 if k == 27:
     break

cap.release()
cv2.destroyAllWindows()

crop_img = roi_color[?]
cv2.imwrite("path", roi_color)

cap.release() cv2.destroyAllWindows()

crop_img = roi_color[?] cv2.imwrite("path", roi_color)

Any advice is welcome! Have a nice day