Compare Images in VBA

[JasonT]

Hi

I want to compare 2 images and display the difference in VBA.

How do i write the code?

Thank you.

[magick]

Use ImageMagickObject. It includes a Compare() method to compare two images.

[JasonT]

I tried to input the command line " $ compare -compose src StudPath RefPath difference.png" but received a syntax error.

I am trying to compare 2 images and the difference is saved as another image. Is this possible?

I tried another way of writing, (RefPath/StudPath is the path of my image)

Dim VarName As New MagickImage
Dim compare As Image

VarName.compare , RefPath, StudPath, compare.jpg

but received an error which says" Object variable not set"

[fmw42]

try just

compare -metric rmse image1 image2 null:

if the two images are the same size.

[JasonT]

try just

compare -metric rmse image1 image2 null:

if the two images are the same size.

rmse is highlighted and an error shows up which reads "Complie Error, Expected: End of Statement"

[fmw42]

try

compare -metric rmse rose: rose: null:

change the rmse to any other metric. If these fail, then you have a problem with your IM install or you have some other compare function on your system and need to rename the IM compare.

see
http://www.imagemagick.org/Usage/compare/#statistics

[JasonT]

Failed again.

I am writing in VBA, do i have to change the way in writing the command line? (declare IM etc.)

[fmw42]

You may have to provide the full path to compare when using any scripting system such as VBA, Applescript, PHP exec(), etc