How to draw a curved rectangle on a matrix with given two points?

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John W. Z
John W. Z 2016-3-31
评论： Joachim Schlosser 2016-4-1
How to draw a curved rectangle matrix with given two points?
Assume, two points given:
a = [1,0.5];
b = [1,3.5];
And the created curved rectangle should be like this:
But the point is, all I finally want, is an image matrix return, not just to plot this figure using rectangle(); on screen.
Thanks, guys~
ps: in a binary scale.

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回答（1 个）

Joachim Schlosser
Joachim Schlosser 2016-3-31
If you want an image matrix, I still suggest using rectangle() to first draw, then exporting the figure to bitmap for getting the image matrix.
  2 个评论
John W. Z
John W. Z 2016-3-31
Hi Joachim, Thanks for your answer, It would work if I use getframe() converting figure to matrix, but it seems lack of efficiency, in which the speed is chief consideration. I found insertShape() could insert image to matrix, but I failed even with times trying. Would you mind help me with this?
http://cn.mathworks.com/help/vision/ref/insertshape.html
Joachim Schlosser
Joachim Schlosser 2016-4-1
insertShape cannot directly draw rounded rectangles. You may first want to try the above solution using
set(0,'DefaultFigureVisible','off');
to disable the display of the figure and thus drastically increase speed.

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