3-1-2 衔接与拓展：从图像矩阵到文本向量

0416+2509165015/2.py

@@ -0,0 +1,16 @@
+import numpy as np
+img = np.array([
+    [255, 255, 0, 0],
+    [255, 255, 0, 0],
+    [0, 0, 255, 255],
+    [0, 0, 255, 255]
+], dtype=np.uint8)
+white_count = np.sum(img == 255)
+black_count = np.sum(img == 0)
+print(f"1. 白色像素(255)数量：{white_count}，黑色像素(0)数量：{black_count}")
+img_flip = np.fliplr(img)
+print("\n2. 水平翻转后：")
+print(img_flip)
+img_rot90 = np.flipud(img.T)
+print("\n3. 逆时针旋转90度后：")
+print(img_rot90)