Legacy ImageMagick Discussions Archive

Hi

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

How do i write the code?

Thank you.

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

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"

try just

compare -metric rmse image1 image2 null:

if the two images are the same size.

fmw42 wrote: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"

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

Failed again.

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

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