试图运行简单的PIL python示例，无法将jpeg转换为float [英] Trying to run simple PIL python example, can't convert jpeg to float

问题描述

所以我写了一个简单的python脚本

so I wrote a simple python script

from PIL import Image
from pylab import *
im = array(Image.open('sample.jpg'))
imshow(im)

我从IDLE得到这个错误

and i get this error from IDLE

Traceback (most recent call last):
  File "/home/michael/Dropbox/OpenCV/greyscale.py", line 5, in <module>
    imshow(im)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/pyplot.py", line 2722, in     imshow
   imlim=imlim, resample=resample, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/axes.py", line 7091, in imshow
im.set_data(X)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/image.py", line 418, in     set_data
    raise TypeError("Image data can not convert to float")
TypeError: Image data can not convert to float

基本上我说我可以没有隐瞒我的形象漂浮，任何人都知道我失踪了什么

basically says i can not covert my image to float, anyone know what im missing

推荐答案

我知道这会很晚才到，但我想我应该回答以防万一其他人有同样的问题。我遇到了同样的问题，问题是我加载的图像在项目文件夹中不存在。所以你需要检查 sample.jpg 是否存在并且它正确加载在使用之前。

I know this is coming very later but I thought I should answer just in case anyone else had the same problem. I ran into the same problem and the issue was the image I loaded did not exist in the project folder.so you need to check that sample.jpg exist and that it loads properly before using it.

if os.path.isfile('sample.jpg'): im = array(Image.open('sample.jpg'))
if im == None or im.size == 0: 
   print 'Image loaded is empty'
   sys.exit(1)

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