# 実験課題1
# 3.1 画像サイズ変換・画像の回転

import cv2

image_path = 'sample.jpg'
img = cv2.imread(image_path)

if img is not None:
    height, width = img.shape[:2]

    # サイズ変換
    new_width, new_height = width // 2, height // 2
    resized_img = cv2.resize(img, (new_width, new_height))
    cv2.imwrite('3_1_resize.jpg', resized_img)

    # 回転
    center = (width // 2, height // 2)
    rotation_matrix = cv2.getRotationMatrix2D(center, 45, 1.0)
    rotated_img = cv2.warpAffine(img, rotation_matrix, (width, height))
    cv2.imwrite('3_1_rotate.jpg', rotated_img)