/// <summary>
/// Sharpens an image
/// </summary>
/// <param name="Image">Image to manipulate</param>
/// <returns>A SwiftBitmap image</returns>
public static SwiftBitmap SharpenLess(this SwiftBitmap Image)
{
Contract.Requires<ArgumentNullException>(Image != null, "Image");
return Image.ApplyConvolutionFilter(new int[][]{
new int[] {-1, 0, -1},
new int[] {0, 7, 0},
new int[] {-1, 0, -1}
});
}
/// <summary>
/// Does smoothing using a box blur
/// </summary>
/// <param name="Image">Image to manipulate</param>
/// <param name="Size">Size of the aperture</param>
/// <returns>A SwiftBitmap object</returns>
public static SwiftBitmap BoxBlur(this SwiftBitmap Image, int Size = 3)
{
Contract.Requires<ArgumentNullException>(Image != null, "Image");
int[][] TempFilter = new int[Size][];
for (int x = 0; x < Size; ++x)
{
TempFilter[x] = new int[Size];
for (int y = 0; y < Size; ++y)
{
TempFilter[x][y] = 1;
}
}
return Image.ApplyConvolutionFilter(TempFilter);
}
/// <summary>
/// Creates the bump map
/// </summary>
/// <param name="Direction">Direction of the bump map</param>
/// <param name="Image">Image to create a bump map from</param>
/// <param name="Invert">Inverts the direction of the bump map</param>
/// <returns>The resulting bump map</returns>
public static SwiftBitmap BumpMap(this SwiftBitmap Image, Direction Direction = Direction.TopBottom, bool Invert = false)
{
Contract.Requires<ArgumentNullException>(Image != null, "Image");
int[][] EdgeDetectionFilter = null;
if (Direction == Direction.TopBottom)
{
if (!Invert)
{
EdgeDetectionFilter = new int[][]{
new int[] {1, 2, 1},
new int[] {0, 0, 0},
new int[] {-1, -2, -1}
};
}
else
{
EdgeDetectionFilter = new int[][]{
new int[] {-1, -2, -1},
new int[] {0, 0, 0},
new int[] {1, 2, 1}
};
}
}
else
{
if (!Invert)
{
EdgeDetectionFilter = new int[][]{
new int[] {-1, 0, 1},
new int[] {-2, 0, 2},
new int[] {-1, 0, 1}
};
}
else
{
EdgeDetectionFilter = new int[][]{
new int[] {1, 0, -1},
new int[] {2, 0, -2},
new int[] {1, 0, -1}
};
}
}
return Image.ApplyConvolutionFilter(EdgeDetectionFilter, false, 127).BlackAndWhite();
}
/// <summary>
/// Sobel emboss function
/// </summary>
/// <param name="Image">Image to manipulate</param>
/// <returns>A SwiftBitmap image</returns>
public static SwiftBitmap SobelEmboss(this SwiftBitmap Image)
{
Contract.Requires<ArgumentNullException>(Image != null, "Image");
return Image.ApplyConvolutionFilter(new int[][]{
new int[] {-1, 0, 1},
new int[] {-2, 0, 2},
new int[] {-1, 0, 1}
}, offset: 127);
}
