Hoo*_*ree 16 python opencv numpy
我是 opencv 的新手。当我画一个圆时,发生了一些奇怪的事情。当我尝试将 c2 传递给圆函数时,它不起作用,但当我将 c1 传递给颜色参数时,它工作得很好。但c1 == c2。
这是我的代码:
import cv2
import numpy as np
canvas = np.zeros((300, 300, 3), dtype='uint8')
for _ in range(1):
r = np.random.randint(0, 200)
center = np.random.randint(0, 300, size=(2, ))
color = np.random.randint(0, 255, size=(3, ))
c1 = tuple(color.tolist())
c2 = tuple(color)
print('c1 == c2 : {} '.format(c1 == c2))
cv2.circle(canvas, tuple(center), r, c2, thickness=-1)
cv2.imshow('Canvas', canvas)
cv2.waitKey(0)
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当我使用 c2 时,控制台打印:“类型错误:参数“颜色”的标量值不是数字”,但为什么当c1 == c2时会发生这种情况?谢谢。
bha*_*atk 19
ndarray.tolist():数据项通过该函数转换为最接近的兼容内置 Python 类型item。前任。
import cv2
import numpy as np
canvas = np.zeros((300, 300, 3), dtype='uint8')
for _ in range(1):
r = np.random.randint(0, 200)
center = np.random.randint(0, 300, size=(2, ))
color = np.random.randint(0, 255, size=(3, ))
#convert data types int64 to int
color = ( int (color [ 0 ]), int (color [ 1 ]), int (color [ 2 ]))
cv2.circle(canvas, tuple(center), r, tuple (color), thickness=-1)
cv2.imshow('Canvas', canvas)
cv2.waitKey(0)
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