I am trying to create a basic image detector with open cv. I am using ORB, I try to open an image and then I try to detect keypoints in the image. Here is my code
import cv2
from cv2 import ORB
image1 = cv2.imread("original.jpg", cv2.IMREAD_GRAYSCALE)
orb = ORB()
# find the keypoints with ORB
kp = orb.detect(image1, None)
However when I run my code the program crashes with the following error
Process finished with exit code -1073741819 (0xC0000005)
I search for this error and I found out that this is a memory access violation but I dont know where there it could be a violation?
I got the same error. After some searching I got that ORB_create()
instead of ORB()
fixes it.
Sources:
matching error in ORB with opencv 3
outImage error fix,
https://github.com/opencv/opencv/issues/6487
Code:
import numpy as np
import cv2
from matplotlib import pyplot as plt
img = cv2.imread('extra/sample.jpg',0)
## ERROR
#orb = cv2.ORB()
## FIX
orb = cv2.ORB_create()
# find the keypoints with ORB
kp = orb.detect(img,None)
# compute the descriptors with ORB
kp, des = orb.compute(img, kp)
## ERROR
#img2 = cv2.drawKeypoints(img,kp,color=(0,255,0), flags=0)
## Use This or the one below, One at a time
#img2 = cv2.drawKeypoints(img, kp, None, flags=cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS)
img2 = cv2.drawKeypoints(img, kp, outImage = None, color=(255,0,0))
plt.imshow(img2),plt.show()