Make Bitmap image sharp

Question

I have an application c# wpf and I use Image Bitmap.

I have a Byte [] who contains value (0 or 255) used to draw an image in gray scale.

Example :

int heigth = 5;
int width = 5;
Byte[] image = new Byte[]
    { 255,   0, 255,   0, 255,
        0, 255, 255, 255,   0,
      255, 255,   0, 255, 250,
        0, 255, 255, 255,   0,
      255,   0, 255,   0, 255};

Corresponds to the image

To display this image in my application I did that :

XAML :

<Border Style="{StaticResource BorderStyle}">
    <Image Source="{Binding BlockPicture, Mode=OneWay,UpdateSourceTrigger=PropertyChanged}"  />
</Border>

C# :

private BitmapSource _blockPicture;
public BitmapSource BlockPicture
{
    get
    {
        return _blockPicture;
    }
    private set
    {
        _blockPicture = value;
        OnPropertyChanged("BlockPicture");
    }
}

private BitmapSource LoadImage(int w, int h, byte[] matrix)
{
    if (matrix == null || matrix.Length == 0)
        return null;

    var format = PixelFormats.Gray8;
    var stride = (w * format.BitsPerPixel + 7) / 8;
    return BitmapSource.Create(w, h, 96, 96, format, null, matrix, stride);
}

BlockPicture = LoadImage(width, heigth , image);

It's work fine but when the image is displayed, it's very ugly and diffuse.

What can I do to have a nice picture clean and sharp ?

Eli Arbel · Accepted Answer · 2016-07-21 10:03:18Z

4

You can specify the BitmapScalingMode:

<Image RenderOptions.BitmapScalingMode="NearestNeighbor" />

answered Jul 21, 2016 at 10:03

Eli Arbel

22.8k3 gold badges48 silver badges73 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

A.Pissicat Over a year ago

That's exactly what I want. Thank you !

Collectives™ on Stack Overflow

Make Bitmap image sharp

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related