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POTiff images aren't showing actual size in WPF Image control
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  1. POTiff images aren't showing actual size in WPF Image control
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    copied!<p>I've been working on a WPF application and need to be able to show multi-page tiffs at actual size as well as fit to screen. The code I have from another StackOverflow thread is working great for showing some of them at their actual size, however the new scanned tiff files which are around 1700 x 800 are showing up to be about 600 x 400. </p> <p>What I'm trying to achieve is basically a copy of how Windows Photo Viewer shows you images. You can see them fit to the screen, or press a button and it zooms to actual size with scrollbars if needed. I have 2 tiffs that work. 1 is JPEG saved as tiff from mspaint, the other (2) is an older scanned document. 1 is 180dpi, 32 bit depth, LZW compression and 2 resolution unit, it was taken with digital camera. 2 is 200 dpi, 1 bit depth, 2 resolution unit, CCITT t.6 compression, it was a scanned document. The files that don't work are 300dpi but otherwise the same as #2.</p> <p>Here is the code i'm using to show the image.</p> <pre><code>// Open a Stream and decode a TIFF image Stream imageStreamSource = new FileStream("C:\\Users\\cblair\\Documents\\Visual Studio 2010\\Projects\\WpfApplication1\\WpfApplication1\\flowers.tif", FileMode.Open, FileAccess.Read, FileShare.Read); TiffBitmapDecoder decoder = new TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default); BitmapSource bitmapSource = decoder.Frames[0]; // Draw the Image myImage.Source = bitmapSource; </code></pre> <p>and the XML</p> <p><code> &lt;ScrollViewer HorizontalScrollBarVisibility="auto"&gt; &lt;Viewbox&gt; &lt;Image x:Name="myImage" /&gt; &lt;/Viewbox&gt; &lt;/ScrollViewer&gt;</code></p>
 

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