Python을 사용하여 OpenCV에서 이미지를 자르는 방법: Numpy Slicing과 getRectSubPix?

import cv2

# Read the original image
img = cv2.imread("image.jpg")

# Crop a region using numpy slicing
cropped_img = img[y:y+h, x:x+w]

# Display the cropped image
cv2.imshow('Cropped Image', cropped_img)
cv2.waitKey(0)

import cv2

# Read the original image
img = cv2.imread("image.jpg", cv2.IMREAD_GRAYSCALE)

# Crop a region using getRectSubPix
cropped_img = cv2.getRectSubPix(img, (w, h), (x, y))

# Display the cropped image
cv2.imshow('Cropped Image', cropped_img)
cv2.waitKey(0)

import PIL.Image as Image

im = Image.open('0.png').convert('L')
im = im.crop((1, 1, 98, 33))
im.save('_0.png')

import cv2

# Read the image
img = cv2.imread('0.png', cv2.IMREAD_GRAYSCALE)

# Crop the image using numpy slicing
cropped_img = img[1:33, 1:98]

# Save the cropped image
cv2.imwrite('_0.png', cropped_img)