TIF IMAGE FILE SAVE with LZW MODE ON . . .

mbatchelor · November 2018

2018-11-14-110830

All --

Is there a way to control TIF IMAGE FILE COMPRESSION via CODE?

Background . . .

When saving a TIF IMAGE in IMAGE-PRO, there are three options for compression. They are:

NONE
LZW
LZW AND DIFFERNENCING

I have a customer that saves their TIF IMAGES with LZW.

I have written an APP for them that needs to maintain their ORIGINAL TIFF (with LZW) IMAGE FILE but I would like to create a WORKING COPY TIFF (with LZW) IMAGE FILE.

It seems that when IMAGE-PRO saves a TIF IMAGE FILE, the COMPRESSION OPTION that is used is only controllable via the SAVE AS DIALOG BOX.

If CODE does a SAVE AS, the COMPRESSION OPTION that will be used is the last one that was used via the SAVE AS DIALOG BOX.

I have recorded saving TIF IMAGES using each COMPRESSION OPTION but no difference is shown in the RECORDED CODE.

So . . .

Is there a way to control TIF IMAGE FILE COMPRESSION via CODE?

Thanks.

-- Matt

PierreD · November 2018

Matt,

Here is a macro to do that:

    Public Function SaveLZWDiff() As SimpleScript
        SaveLZWDiff = New SimpleScript
        Dim image1

        With Application.DocumentCommands.ActiveImage(SaveLZWDiff)
            .Run(image1)
        End With

        With Automate.ScriptingCommands.CodeCommand(SaveLZWDiff)
            If .Run() Then
                ' User Code Here
                Dim image As McImage = image1
                image.File.Compression=MediaCy.IQL.IO.mcscCompression.mcscLZWDiff
            End If
        End With

        With Application.DocumentCommands.SaveAs(SaveLZWDiff)
            .Filename = ThisApplication.Path(mcPathType.mcptWritableImages) & "Test.tif"
            .Run(image1)
        End With

    End Function

PierreD · November 2018

And a shorter version:

    Public Sub SaveLZWDiff2
        With ThisApplication.ActiveImage
            .File.Compression=MediaCy.IQL.IO.mcscCompression.mcscLZWDiff
            .SaveAs(ThisApplication.Path(mcPathType.mcptWritableImages) & "Test.tif")
        End With
    End Sub

PierreD · November 2018

BTW, in both cases you will need a reference to MediaCy.IQL.IO.dll which is not there by default.

Pierre

mbatchelor · November 2018

2018-11-16-094433

Pierre --

Thank you very much for this information. The size difference between the LZW TIF and the TIF is SIGNIFICANT so this customer will very much appreciate the LZW OPTION.

-- Matt

TIF IMAGE FILE SAVE with LZW MODE ON . . .

Answers