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 AV in TIEBitmap.AssignIEVisionImage() on CopyMemory

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T O P I C    R E V I E W
Oribi Posted - Dec 08 2022 : 08:02:05
The AssignIEVisionImage raises an AV on the CopyMemory when used on the same instance used to get the IEVisionImage.

The following code:

  IEBmp := TIEBitmap.Create;
  try
    IEBmp.Create(FImgFileName);
    IEVImg := IEBmp.GetIEVisionImage;
    IEVImg.smooth(ievGAUSSIAN);
    IEBmp.AssignIEVisionImage(IEVImg);
  finally
    IEBmp.Free;
  end;


Worked well in ImageEn 10.3, but raises an AV in 11.4.5.
3   L A T E S T    R E P L I E S    (Newest First)
xequte Posted - Dec 09 2022 : 13:52:54
Sorry, this is a confusing aspect of GetIEVisionImage.

AssignIEVisionImage() is The *only* needed for methods that change the size of the image. Please see the section "About GetIEVisionImage and AssignIEVisionImage" at:

http://www.imageen.com/help/TIEBitmap.GetIEVisionImage.html

Nigel
Xequte Software
www.imageen.com
Oribi Posted - Dec 09 2022 : 00:53:53
I assume that is now the case for all IEVisionImage operations? I use the IEVisionImage quite extensively to perform operations and reassign the image back to the IEBitmap when done.
xequte Posted - Dec 08 2022 : 18:52:09
Hi

There was a bug in older versions prior to v11.4.5 that required assignIEVisionImage() for smooth. That is no longer needed. Please change your code to:

  IEBmp := TIEBitmap.Create;
  try
    IEBmp.Create(FImgFileName);
    IEVImg := IEBmp.GetIEVisionImage;
    IEVImg.smooth(ievGAUSSIAN);
  finally
    IEBmp.Free;
  end;



Nigel
Xequte Software
www.imageen.com