dicomwrite creates a black and white image, why?

3 次查看（过去 30 天）
MYimage
MYimage 2012-8-1
Hi there,
I have a problem in writing and reading a dicom CT image , I explained in the code below, I think I miss something, would you please let me know what I miss. Thanks a lot.
x=dicomread('t3.dcm'); % a grayscale image
metadata=dicominfo('t3.dcm');
... process x data
imshow(x,[]); % a correct grayscale image
dicomwrite (x,'t1.dcm',metadata);
x1=dicomread('t1.dcm');
imshow(x1,[]); % it is a black and white image, why?

请先登录，再回答此问题。

回答（2 个）

venkat vasu
venkat vasu 2012-8-1
info = dicominfo('CT-MONO2-16-ankle.dcm'); I = dicomread(info); dicomwrite(I,'ankle.dcm',info);
this code will help you...
Sean de Wolski
Sean de Wolski 2012-8-1
What is the class of x after you read it in?
class(x) %?
And after this:
max(x(:))
min(x(:))
I would guess you are writing the file out and not accounting for the class of the data, causing it to scale wierdly or saturate at the edges.
  1 个评论
MYimage
MYimage 2012-8-2
thank you for your answer, I corrected it by converting the data from double to uint16.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 DICOM Format 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by