Resize Tiff

[malak]

Hello,

I am trying to resize, rotate and crop multi-page tiff images. but i couldn't do that.
here is my code:

Code: Select all

 
  if (imaging.TiffIsMultiPage(imageInt))
                {
                    int count = imaging.TiffGetPageCount(imageInt);
                    for (int i = 1; i <= count; i++)
                    {
                        imaging.TiffSelectPage(imageInt, i);
                        imaging.Resize(imageInt, width, height, InterpolationMode.InterpolationModeHighQuality);
// After this line i find : imaging.TiffGetPageCount(imageInt) equal zero, and imaging.TiffIsMultiPage(imageInt) equal false.
                    }
                }
                else
                {
                    imaging.Resize(imageInt, width, height, InterpolationMode.InterpolationModeNearestNeighbor);
                }


i couldnt resize the page when it's multipage. and when i try to save the image after this code. i get unsupported format.
i also want to make sure that: "SaveAsByteArray" method can save multipage tiff.

Thanks in advance.

[Loïc]

Hi,

To open the multipage tiff you should use this method: TiffCreateMultiPageFromFile()

Here, you will be able to edit each page (resizing, effect, filters, delete, add...)

And to save the file: TiffSaveMultiPageToFile()

With best regards,

Loïc

[malak]

Hello Loic,
Thanks for your response,

Unfortunately I dont use files in my application, instead i use byte array.
so before the previous code i write:

Code: Select all

int imageInt = imaging.CreateGdPictureImageFromByteArray(ref image);
// where image is a byte[] containing a tiff multipage image


it loads fine.. i check if the page is multipage and it says true, i also check for page count and it says 5 for example. so i suppose i dont have problem with loading the tiff.

would you try my code and see if it works?

Thanks in advance

[Loïc]

Hi,

you can use the CreateGdPictureImageFromByteArray instead the TiffCreateMultiPageFromFile(). The result will be the same.

would you try my code and see if it works?

It works.

Note: You should also call TiffOpenMultiPageAsReadOnly(True)

Kind regards,

Loïc