OpenCV + Python - NameError: name 'imSize' is not defined

Question

I am using OpenCV for image processing. In which, I am getting these errors please suggest what to do, below is my code:

import dicom
import Image
import ImageOps

meta=dicom.read_file("E:\A_SHIVA\ANANADAN\IM_0.dcm") 
imHeight=meta.Rows
imWidth=meta.Columns 
imSize=(imWidth,imHeight)
TT=Image.frombuffer("L",imSize,meta.PixelData,"raw","L",0,1)
TT.save("testOUTPUT.tiff","TIFF",compression="none")

The error is below:

Traceback (most recent call last):
  File "C:\Users\sairamsystem\AppData\Local\Enthought\Canopy\User\lib\site-packages\IPython\core\interactiveshell.py", line 3066, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-8-640c37dc4648>", line 1, in <module>
    TT=Image.frombuffer('L',imSize,meta.PixelData,"raw","L",0,1)
NameError: name 'imSize' is not defined

Welcome to StackOverflow! Please change your question to something like "Error when using OpenCV for image processing" and add a sentence like 'I am getting the following error {error}. How can I solve this problem? Thank you!'. That improves the quality of your post. — Nander Speerstra
– Nander Speerstra, Commented Jul 25, 2016 at 9:02

PixelPioneer · Accepted Answer · 2016-07-25 11:10:15Z

1

The code is fine. It worked for me. The name error exception happened because it could not find imSize variable, which means it never got made. This can only happen when you haven't read the Dicom file properly, so try changing the path and printing the variable 'meta' to see if it has any value. After reading the file also print and check if meta.Rows and meta.Columns are having the correct values or not.

answered Jul 25, 2016 at 11:10

PixelPioneer

4,2006 gold badges36 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

PixelPioneer Over a year ago

It worked for me. Just check if the path you are using is right. After read_file try printing the meta variable to see if it has any value. Then print meta.Rows to see if it gives you some value

Collectives™ on Stack Overflow

OpenCV + Python - NameError: name 'imSize' is not defined

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related