Christian, et. al.,
I am in the process of switching over to the GraphicsMagic plugin for much of
the image manipulation in my astronomical video camera control software so that
I can perform 16-bit image calculations. One of the features that I have
implemented in the past (using an array of standard “pictures") is image
“stacking”. I should be able to duplicate this functionality using the
GMImageArrayMBS class. Frame “averaging” works exceptionally well using the
averageImages method of the GMImageArray class, but there is no equivalent
“summing” function. According to what I have been able to discern (from the GM
documentation) the following *should* work, but it doesn’t ever return anything
brighter than a single image.
Am I missing something obvious? Any suggestions would be appreciated.
Cheers.
- bill k
‘The following is a “global” property and is being populated with individual
image frames:
StackingFrames As GMImageArrayMBS
Using the “averageImages” method is working exactly as expected. Here’s the
code that *should* produce a “summed" image:
Dim i As Integer
Dim n As Integer
Dim stackedImage As GMImageMBS
n = StackingFrames.Size
stackedImage = StackingFrames.Image(0)
If n > 1 Then
For i = 1 To n - 1
stackedImage.Composite(StackingFrames.Image(i), 0, 0,
GMImageMBS.PlusCompositeOp)
Next i
End If
Return stackedImage.CopyPicture
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