Hi Greg,
I though about doing this, but as it turns out I am not working in .NET 2.0
(Windows.Forms) but in WPF. So I have no idea how to get a Bitmap object
out of the Image control of WPF. I've been trying to unsuccesfully...
Uriel
On Fri, 11 May 2007 07:20:55 -0400, Gregory Miley <[EMAIL PROTECTED]>
wrote:
>Wasn't paying attention when I type this out...
>
> // int newColor = (int)(color.R/3 + color.G/5.9 + color.B/1.1);
>
>Should actually be
>
> // int newColor = (int)(color.R*0.3 + color.G*0.59 + color.B*0.11);
>
>Sorry, was trying to type that out from memory. Obviously that didn't
>work out quite right.
>
>
>Greg
>
>-----Original Message-----
>From: Discussion of advanced .NET topics.
>[mailto:[EMAIL PROTECTED] On Behalf Of Gregory Miley
>Sent: Friday, May 11, 2007 07:11
>To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
>Subject: Re: Grayscale images in WPF
>
>You can convert an image to grayscale simply by creating an average of
>each pixels color components.
>
> Bitmap bmp = new Bitmap(oldBmp.Width, oldBmp.Height)
> for(int x = 0; bm.Width; x++)
> {
> for(int y = 0; bm.Height; y++)
> {
> Color color = oldBmp.GetPixel(x,y);
> int newColor = (int)(color.R/3 + color.G/3 + color.B/3);
> // Other methods use a formula to better calculate the luminance
> // int newColor = (int)(color.R/3 + color.G/5.9 + color.B/1.1);
> Bmp.SetPixel(x,y, Color.FromArgb(newColor, newColor, newColor));
> }
> }
>
>
>Give that a try.
>
>
>Greg
>
>
>-----Original Message-----
>From: Discussion of advanced .NET topics.
>[mailto:[EMAIL PROTECTED] On Behalf Of Eric Gunnerson
>Sent: Thursday, May 10, 2007 19:41
>To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
>Subject: Re: Grayscale images in WPF
>
>Have you thought about graying it out using opacity? If you set the
>opacity to about 50%, you will likely get the effect that you want. You
>can control how it grays by putting a rectangle of the appropriate color
>(white, black, gray) directly behind the image...
>
>Eric
>
>-----Original Message-----
>From: Discussion of advanced .NET topics.
>[mailto:[EMAIL PROTECTED] On Behalf Of Uriel Cohen
>Sent: Thursday, May 10, 2007 3:44 AM
>To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
>Subject: [ADVANCED-DOTNET] Grayscale images in WPF
>
>Hi,
>
>I've been using the Image control in the definition of a XAML
>UserControl,
>and I realized that when I set IsEnabled to false, then the bitmap
>displayed in the Image control doesn't get grayed out as I was
>expecting.
>
>I've been trying to create a similar control (or one that inherits from
>Image) that I could use from XAML and bind its properties.
>The idea is that I am binding the Source property of my image instance
>to a
>property of a data type that I have created (the property is actually a
>string of the location in the disk of the jpg file). So I need the new
>control to be able to be binded to.
>
>I tried using a FormatConvertedBitmap instance as the ImageSource of the
>Image.Source property, and giving it a BitmapImage instance, but I
>couldn't
>bind the BitmapImage to the path of the image on the disk.
>I also though on creating my own BitmapEffect, which would be a better
>solution, but these are very complicated to write since you need to
>meddle
>with some unmanaged code and COM interfaces, so I gave up this idea.
>
>Has someone succeded in doing something similar?
>
>I would like to end up with something like a control called
>GrayeableImage...
>
>TIA
>
> Uriel
>
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