如何使用python将原始图像转换为png

我试图用python将原始图像数据转换为png。我很新的python，尤其是图像处理...如何使用python将原始图像转换为png

原始文件是一个16位灰度图像。

正如我已经扫描了论坛，我想出了以下解决方案：

from PIL import Image, ImageFilter 
import numpy as np 
from scipy import ndimage, misc 


rawfile = np.fromfile('test.raw', dtype=np.int16) 

rawfile.shape = (1025,1025) 
imgSize = (1025,1025) 

img = Image.fromstring('L', imgSize, rawfile, 'raw', 'F;16') 
img.save("rawData.png")

但我不断收到以下错误：

Traceback (most recent call last): 
    File "****\Programs\Python 2.7.6\readraw\readraw.py", line 11, in <module> 
    img = Image.fromstring('L', imgSize, rawfile, 'raw', 'F;16') 
    File "****\Programs\Python 2.7.6\lib\site-packages\PIL\Image.py", line 1835, in fromstring 
    return frombytes(*args, **kw) 
    File "****\Programs\Python 2.7.6\lib\site-packages\PIL\Image.py", line 1822, in frombytes 
    im.frombytes(data, decoder_name, args) 
    File "****\Programs\Python 2.7.6\lib\site-packages\PIL\Image.py", line 608, in frombytes 
    d = _getdecoder(self.mode, decoder_name, args) 
    File "****\Programs\Python 2.7.6\lib\site-packages\PIL\Image.py", line 390, in _getdecoder 
    return decoder(mode, *args + extra) 
ValueError: unknown raw mode

有人能向我解释为什么原始模式未知？我检查了Docs，并且据我了解这个主题，PILLOW lib应该带这个？！

问候

谢谢你们的帮助！

我改变了我的代码，现在它似乎工作：

from PIL import Image, ImageFilter 
import numpy as np 
from scipy import ndimage, misc 


rawfile = np.fromfile('test.raw', "uint16") 

rawfile.shape = (1025,1025) 
misc.imsave("test.png", rawfile)

来源

2014-02-21 user3338564