getimage problem
显示 更早的评论
Hi, I would like to use getimage or some other function to capture the current figure which has for example an image + a line drawn on top of it. I tried
imshow rice.png
hold on
line([1 256],[1 256]);
hold off
Im = getimage;
but it doesn't capture the line. Please tell me how it the right way to do this.
Thanks. Razvan
采纳的回答
Walter Roberson
2011-9-3
0 个投票
See getframe()
You should also become familiar with saveas() and print(), and if you start doing anything more complex, you should become familiar with the user contribution export_fig
3 个评论
Razvan
2011-9-3
Razvan
2011-9-5
Walter Roberson
2011-9-6
No, there is no way to getframe() a figure which is not visible.
Capturing frames without displaying them is not easy on Windows, but I seem to recall that someone has a MATLAB File Exchange contribution that helps. And Yair probably has something relevant in his undocumentedmatlab site.
The particular case that you show above, of loading an image and drawing a line parallel to an axis, I would just do all in memory without displaying the images at all: if you have an image, then it is relatively easy to convert the image to truecolor (if it isn't already) and then to set a row or column of the matrix all to a particular value (to create the line.)
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Printing and Saving 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
