清空筛选条件
清空筛选条件

How do I read an image file in .fits format and convert it to.png or .tiff?

10 次查看（过去 30 天）
Vanessa Phung
Vanessa Phung 2018-12-11
评论： Vanessa Phung 2019-1-7
I have images in .fits extension. I'd like to open it in matlab and convert it to other format such as .png or .tiff.
Any suggestion on how should I start?

请先登录，再回答此问题。

采纳的回答

Mark Sherstan
Mark Sherstan 2018-12-11
Use fitsread() and imwrite() if you need further help please post the file you are working with.
  1 个评论
Vanessa Phung
Vanessa Phung 2019-1-7
Thank you for your comment, Mark and Chad.
Initially, I only get all ' solid color' for the image after imwrite.
However, I adjusted the contrast and save the image in .png using the codes as show here.
data = fitsread(filename,'primary');
% --rotate and flip image file--
data2 = imrotate(data,180);
data2= fliplr(data2);
% --for contrast to see image--
factor=0.1;
clow =min(data2(:));
chigh=max(data2(:))*factor;
clims = [clow chigh] ;
A=data2;
A=A-clims(1);
A= A/clims(2)/factor;
imwrite(A,'testinn.png', 'BitDepth', 16);
figure(1); imshow('testinn.png');
% --figure file save
h = figure(2);
set(h,'Visible',vkey);
img1= imagesc(data2, clims);colorbar;title(sprintf('fn:# %d',fnum));colormap(jet);
%---save this figure in directory---%
print(h,'MySavedPlot','-dpng');
testinn.png
If you have any suggestions on getting the good contrast directly, I'd be happy to learn about it.
Using imagesc, I manage to get this. (max. is actually 23000, that's why I get poor contrast
initially)
MySavedPlot.png

请先登录，再进行评论。

更多回答（1 个）

Chad Greene
Chad Greene 2018-12-11
You should be able to read it with fitsread and then save it to png or tiff with imwrite.

类别

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

标签

Community Treasure Hunt

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

Start Hunting!

Translated by