Scipy Kmeans 退出并出现 TypeError

Scipy Kmeans exits with TypeError

当 运行 下面的代码时,我得到一个 TypeError 说:

"File "_vq.pyx”,第 342 行,在 scipy.cluster._vq.update_cluster_means TypeError:不支持 float 或 double 以外的类型

from PIL import Image
import scipy, scipy.misc, scipy.cluster

NUM_CLUSTERS = 5

im = Image.open('d:/temp/test.jpg')
ar = scipy.misc.fromimage(im)
shape = ar.shape
ar = ar.reshape(scipy.product(shape[:2]), shape[2])
codes, dist = scipy.cluster.vq.kmeans(ar, NUM_CLUSTERS)
vecs, dist = scipy.cluster.vq.vq(ar, codes)
counts, bins = scipy.histogram(vecs, len(codes))

peak = codes[scipy.argmax(counts)]
print 'Most frequent color: %s (#%s)' % (peak, ''.join(chr(c) for c in peak).encode('hex'))

我不知道如何解决这个问题。

更新:

完整追溯:

Traceback (most recent call last): File "...\temp.py", line 110, in <module> codes, dist = scipy.cluster.vq.kmeans2(ar, NUM_CLUSTERS) File "...\site-packages\scipy\cluster\vq.py", line 642, in kmeans2 new_code_book, has_members = _vq.update_cluster_means(data, label, nc) File "_vq.pyx", line 342, in scipy.cluster._vq.update_cluster_means TypeError: type other than float or double not supported

正在做:

ar = ar.reshape(scipy.product(shape[:2]), shape[2])
print(ar.dtype)

您会看到,您使用 uint8.

类型的数据调用 kmeans

由于kmeans理论上是在d维real向量上定义的,scipy也不喜欢它(如错误中给出的那样)!

那就这样吧:

ar = ar.reshape(scipy.product(shape[:2]), shape[2]).astype(float)

这样的转换正在使我的示例 运行 直到打印出来,它也需要更改以反映给定的类型。