title: imresize in PIL/scipy.misc only works for uint8 images? any alternatives?
body: <p>It seems the <code>imresize</code> implemented in <code>PIL</code>/<code>scipy.misc</code> only works for uint8 images</p>
  
  <pre><code>&gt;&gt;&gt; import scipy.misc
  &gt;&gt;&gt; im = np.random.rand(100,200)
  &gt;&gt;&gt; print im.dtype
  float64
  
  &gt;&gt;&gt; im2 = scipy.misc.imresize(im, 0.5)
  &gt;&gt;&gt; print im2.dtype
  uint8
  </code></pre>
  
  <p>Is there any way around this? I'd like to deal HDR images and therefore needs to deal with <code>float64</code> or <code>float32</code> images. Thanks.</p>