CODEWITHSUNDEEP
dm-script
Caribou
Caribou

Reputation: 11

How to link two ROIs on two different images

I wrote a little program that copies the frame and position of a ROI from an image to an other image of the same size. What I want to do now is to connect the two ROIs in way that when I move one ROI the other one is moving accordingly.

On Dave's mitchell DM scripting website, I found that he used the function ConnectObject. but he does not explain how it works. I read the DM3's documentation and I couldn't find any information about that function.

Upvotes: 1

Views: 131

Answers (2)

BmyGuest
BmyGuest

Reputation: 2949

For simple things there is another option:

Adding the identical ROI to more than one image-display:

In this case, the ROIs are "linked" automatically, because they really are only a single object in memory (but displayed on two displays.) Changing one will change the other. However, this linkage is "lost" if you save/load the images, because when you load the image, all ROIs (in memory) are newly created. Here is some simple example code:

image img1, img2
GetTwoLabeledImagesWithPrompt("Select two images of same size.", "Select", "Source", img1, "Destination", img2 )

imageDisplay disp1 = img1.ImageGetImageDisplay( 0 ) 
imageDisplay disp2 = img2.ImageGetImageDisplay( 0 ) 
number nR = disp1.ImageDisplayCountROIs()

for ( number i = 0; i<nR; i++ )
{
    ROI theROI = disp1.ImageDisplayGetROI(i)
    disp2.ImageDisplayAddROI(theROI)
}

Upvotes: 0

BmyGuest
BmyGuest

Reputation: 2949

There are two concepts here which would work. You can use one of two methods:

1) Use "ConnectObject" to attach some functionality to when a ROI is moved, i.e. when you move ROI 1 it "triggers" code which you can use to update other rois.

2) Use "ImageDisplayListeners" to attach functionality to when any ROI on a specific imageDisplay is moved, i.e. when a ROI an image A is moved it triggers code which you can use to update other rois.

You will find example code in this answer.

Upvotes: 0

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