CODE to perform a SNAPSHOT within an ROI . . .

mbatchelor · October 2021

2021-10-13-172317

All --

I am looking for the equivalent of the SNAPSHOT COMMAND but I would like the image that is the result to be just the ROI.

So as an example . . .

I have an image that is 3000 x 3000 pixels. I would like to work with an ROI that is 1000 x 1000. I have done a COUNT in the ROI. Now I would like a SNAPSHOT of just the ROI.

Here is an illustration with:

-- AA on the left being the 3000 x 3000 image with the 1000 x 1000 ROI with the COUNT within it

-- BB on the right being the SNAPSHOT of the 1000 x 1000 ROI with the COUNT burned into it.

I did this manually by:

-- Saving the ROI from AA in the FEATURES MANAGER

-- Doing a SNAPSHOT on AA

-- Recalling the ROI from AA into the SNAPSHOT

-- Cropping the 3000 x 3000 pixel SNAPSHOT to the appropriate 1000 x 1000 SNAPSHOT

-- Deleting the 3000 x 3000 pixel SNAPSHOT

The result of these steps is BB.

Is there an efficient way to do this with CODE or should I write CODE to perform the steps that I did manually to get from AA to BB?

I know that I could CROP AA to the ROI before doing the COUNT, do a COUNT on the CROPPED IMAGE, and then do a SNAPSHOT of the CROPPED + COUNTED IMAGE but I would like to avoid working with an INTERMEDIATE IMAGE if possible.

Thanks.

-- Matt

YuriG · October 2021

Hi Matt,

There is no direct option to do what you want, but here is a macro that does it executing your steps on invisible image:

    Public Sub SnapshotOfROI
        Dim im As McImage=ThisApplication.ActiveImage
        Dim image1 As McImage
        With Application.WindowCommands.Snap(Nothing)
            .Visible=False'create invisible snapshot
            .Run(ThisApplication.ActiveWindow, image1)
        End With
        'apply original image ROI
        image1.Aoi.CopyFrom (im.Aoi)
        'duplicate and make it visible
        image1.Duplicate(mcImageCreateFlags.mcicfDefault).Visible=True
        image1.Close
    End Sub

This macro leaves ROI outline on snapshot.

And here is the macro that does't have ROI outline

    Public Sub SnapshotOfROIWithoutGreenBorder
        Dim im As McImage=ThisApplication.ActiveImage
        Dim image1 As McImage
        Dim roi =im.Aoi.Duplicate'save the ROI
        'Clear ROI To avoid green line On screenshot
        im.Aoi.Reset
        With Application.WindowCommands.Snap(Nothing)
            .Visible=False'create invisible snapshot
            .Run(ThisApplication.ActiveWindow, image1)
        End With
        im.Aoi.CopyFrom (roi)'restore original ROI
        'apply original image ROI
        image1.Aoi.CopyFrom (im.Aoi)
        'duplicate and make it visible
        image1.Duplicate(mcImageCreateFlags.mcicfDefault).Visible=True
        image1.Close
    End Sub

Yuri

mbatchelor · October 2021

2021-10-14-160338

Yuri --

Those routines are SUPER.

I hotwired them into the APP and they both work great.

I think that

SnapshotOfROI

will be the one that we use but it is nice to have the option.

Thank you.

-- Matt

CODE to perform a SNAPSHOT within an ROI . . .

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