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Minimum and Maximum Morphological Filters not working for BMP images
Rank: Newbie
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Joined: 8/20/2019(UTC)
Posts: 4
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I am following this link to apply minimum and maximum transformation filter https://www.graphicsmill...ximum-median-filters.htm But I am getting 'Aurigma.GraphicsMill.UnsupportedPixelFormatException: 'The specified pixel format is not supported.' on the Apply() method. below is my sample code. Code:EnlargeImageByPixel(@"Images\1_92_mask.bmp", @"Output\1_92_mask_enlarged_2px.bmp", 2);
public static void EnlargeImageByPixel(string sourceFile, string targetFile, int pixel)
{
using(var bitmap = new Bitmap(sourceFile))
using(var minimum = new Minimum())
{
minimum.Radius = pixel;
using (var newBitmap = minimum.Apply(bitmap))
{
newBitmap.Save(targetFile);
}
}
}
Attaching the source BMP file. Edited by user Tuesday, August 20, 2019 4:41:29 AM(UTC)
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Rank: Advanced Member
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Hi Prosanta, It seems you have not attached the image you would like to process. |
Best regards, Fedor Skvortsov |
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Rank: Newbie
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Joined: 8/20/2019(UTC)
Posts: 4
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Hi Fedor, The attachment link is not working. Its not uploading any image attachment in this post.
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Rank: Advanced Member
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Did you click the Start upload button? Sure, it is not intuitive UX. 
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Best regards, Fedor Skvortsov |
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Rank: Newbie
Groups: Guest
Joined: 8/20/2019(UTC)
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Yes I have clicked the StartUpload button, its shows a progress bar of uploading and then it doesn't get disappear automatically as its says. but no images get uploaded..
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Rank: Advanced Member
Groups: Guest
Joined: 7/28/2003(UTC)
Posts: 1,660
Thanks: 5 times
Was thanked: 76 time(s) in 74 post(s)
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The image has the indexed pixel format which is not supported by the morphological filters. To fix the problem you need to convert images to the grayscale pixel format. Code:using (var bitmap = new Bitmap("../../1_92_mask.bmp"))
using (var minimum = new Minimum())
{
//Convert to the grayscale pixel format
bitmap.ColorManagement.Convert(PixelFormat.Format8bppGrayscale);
minimum.Radius = 1;
using (var newBitmap = minimum.Apply(bitmap))
{
//You may convert it back to the indexed pixel format
//if it is neccessary
//newBitmap.ColorManagement.Convert(PixelFormat.Format8bppIndexed);
newBitmap.Save("../../out.bmp");
}
}
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Best regards, Fedor Skvortsov |
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Rank: Newbie
Groups: Guest
Joined: 8/20/2019(UTC)
Posts: 4
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Thanks a lot @Fedor. It works now.
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Minimum and Maximum Morphological Filters not working for BMP images
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