Matlab image display in specific old figures

2
votes

Take an example, I have 2 a sequences of left and right images: left01, right01, left02, right02, etc. How can I display those on only two figures: left and right. Each loop, these 2 figures will be updated with leftxx and rightxx.

"Hold on" will only hold the current figure. Creating figures with figure('Name', 'Left') will not do the trick, as multiple "Left" figures will be created. Yet imshow() does not let me specify the figure to display based on its name.

What I want is something similar to OpenCV, which let you choose which figure (already opened) to display 

cvNamedWindow("Left");
cvShowImage("Left", myLeftImg);

"Left" figure will be updated with new img without creating new figure.

Thanks a lot. Ken.

1
matlab

1 Answers

3
votes

You need to save a handle on the axes-object within the figure and you need to tell the image-function to precisely which axes you want it to draw.

Try something along the lines of:

figure, h_r = axes;
figure, h_l = axes;

for n=1:whatever

    image(right_bitmap, 'Parent', h_r, ...);
    image(left_bitmap, 'Parent', h_l, ...);
    drawnow;

end;

Update: image expects the handle as property 'Parent' rather than as first parameter.