Saving Figure Data into a Matrix

Question

Royi Avital 2011-7-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10817-saving-figure-data-into-a-matrix

评论： Yue 2019-8-14

Hello.

I'm using 'image()' to display an image. I'm adding some annotations using text.

I'd like to save the final result as matrix (3 Channels of the displayed image width and height). Something like using: OI = get(imageHandler, 'CData'); Yet which includes all the annotations I added.

I know I can use 'saveas' and 'print' yet then the data undergoes some interpolation while I want the data as it is back as a matrix.

Anyone knows how to do it?

Thanks.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Zhiyu Xiao 2019-7-14

Great question!

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Gerd 2011-7-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10817-saving-figure-data-into-a-matrix#answer_14875

Hi Royi,

you can use the getframe command.

logo = imread('Logo.jpg','jpg');
image(logo);
text(20,30,'Hello')
f=getframe(gcf)
new=f.cdata
imwrite(new,'new.jpg','JPEG')

Gerd

3 个评论
显示 1更早的评论隐藏 1更早的评论

Yue 2019-8-14

I met the same question.Have you solved this problem? Looking forward to your answer.

Yue 2019-8-14

I solved this problem just now.

You can try gca command.It returns the current figure or image.

Example:

Frame = getframe(gca);
FrameData = Frame.cdata;
imshow(FrameData)
imwrite(FrameData,'teat.png','PNG');

请先登录，再进行评论。

Answer 2

Leslie Solorzano 2016-12-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10817-saving-figure-data-into-a-matrix#answer_247481

https://se.mathworks.com/help/matlab/ref/frame2im.html

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。