= min(x_min, x1, x2, x3, x4)
y_min = min(y_min, y1, y2, y3, y4)
x_max = max(x_max, x1...3)) + "__" + str(round(abs(y), 3)) + extension)
M = np.float32([[1, 0, x], [0, 1, y]]) # x为向左或右移动的像素值...= min(x_min, x1, x2, x3, x4)
y_min = min(y_min, y1, y2, y3, y4)
x_max = max(x_max, x1...= min(x_min, x1, x2, x3, x4)
y_min = min(y_min, y1, y2, y3, y4)
x_max = max(x_max, x1...= min(x_min, x1, x2, x3, x4)
y_min = min(y_min, y1, y2, y3, y4)
x_max = max(x_max, x1