/// <summary>
/// Stitches the images provided to a new image with next best square size.
/// {1, 2} {1, 2, 3} {1, 2, 3, 4, 5 }
/// produces the image
/// 1 1 2 1, 2, 3
/// 3 X 4, 5
/// The color format of all images must be equal and have byte format.
/// </summary>
/// <param name="images">The image array that should be stitched.</param>
/// <returns>Stitched image</returns>
public static PixImage StitchSquare(this PixImage[] images)
{
var squareSize = (int)Fun.Ceiling(images.Length.Sqrt());
var array = new PixImage[squareSize][].SetByIndex(
row => new PixImage[squareSize].SetByIndex(
col => { var ii = squareSize * row + col; return(ii < images.Length ? images[ii] : null); }));
return(array.Stitch());
}
/// <summary>
/// Creates a Gaussian FilterKernel with given sigma.
/// Radius is set to 3 * sigma.
/// </summary>
public static Vector <float> Gaussian1(float sigma)
{
return(Gaussian1(sigma, (int)Fun.Ceiling(3 * sigma)));
}
/// <summary>
/// Creates a Gaussian FilterKernel with given sigma.
/// Radius is set to 3 * sigma.
/// </summary>
public static Matrix <float> Gaussian2(float sigma)
{
return(Gaussian2(sigma, (int)Fun.Ceiling(3 * sigma)));
}