python-2.7

Question

我正在尝试使用 simpleCV 构建图像去扭曲工具和 python2.7。

下面的代码之前工作得很好（当我使用 Ubuntu 16.04.1 LTS 时）但我最近更新到 Ubuntu 17.04，现在我收到这个错误。

函数如下：

def buildMap(Ws, Hs, Wd, Hd, R1, R2, Cx, Cy):
    map_x = np.zeros((Hd, Wd),np.float32)
    map_y = np.zeros((Hd, Wd),np.float32)
    rMap = np.linspace(R1, R1 + (R2 - R1), Hd)
    thetaMap = np.linspace(0, 0 + float(Wd) * 2.0 * np.pi, Wd)
    sinMap = np.sin(thetaMap)
    cosMap = np.cos(thetaMap)

    for y in xrange(0, int(Hd-1)):
        map_x[y] = Cx + rMap[y] * sinMap
        map_y[y] = Cy + rMap[y] * cosMap

    return map_x, map_y

这是我得到的错误：

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 754, in run
    self.__target(*self.__args, **self.__kwargs)
  File "./fy360.py", line 189, in new_dewarp
    xmap, ymap = buildMap(Ws, Hs, Wd, Hd, R1, R2, Cx, Cy)
  File "./fy360.py", line 122, in buildMap
    map_x = np.zeros((Hd, Wd),np.float32)
TypeError: 'float' object cannot be interpreted as an index

我的代码有什么问题？

Answer 1

np.zeros 函数需要 Hd 和 Wd 是整数，而不是浮点数。 Python 的早期版本会自动转换为整数，但较新的版本会给出错误。尝试添加：

Hd = int(Hd)
Wd = int(Wd)

python-2.7 | SimpleCV - TypeError: 'float' object cannot be interpreted as an index

python-2.7 | SimpleCV - TypeError: 'float' object cannot be interpreted as an index

python

numpy

typeerror

simplecv