How do i create a draggable object on an image and have ot show up automatically at the beginning?

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birdman.56 2013-10-29

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评论： birdman.56 2013-10-29

I want create a draggable skeleton made up of connected line segments on an image, then drag the points to the desired location. I've been using imline, but this only shows one line and i have to create it myself.

I would like the lines to show up on the image and then drag the points to where i want them.

In the end i am looking for the resulting endpoints of each line segments which i can get using getPosition.

Any suggestions...

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回答（1 个）

Vishal Rane 2013-10-29

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If by skeleton you mean a closed figure, the you can use imfreehand. Creates a draggable & resizable figure. More specifically for connected line segments you can use imrect or impoly. The addNewPositionCallback function will give the latest position values at any instant.

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Image Analyst 2013-10-29

Yes, you can pass in starting endpoints for the line segment.

birdman.56 2013-10-29

So i tried this. but position variable still shows [0,1500;0,1300] which is my predefined location not the one I dragged to in the image. How can I get that.

figure,imshow(outIm);

l = imline;

setPosition(l,[0 0],[1500 1300]);

postion = l.getPosition();

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