/// <summary>
/// Makes all values absolute
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void Abs(IImage2DFloat source, IImage2DFloat dest)
{
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
int length = source.HostBuffer.Length;
for (int i = 0; i < length; i++)
dest.HostBuffer[i] = Math.Abs(source.HostBuffer[i]);
dest.Normalized = source.Normalized;
}
/// <summary>
/// Clamps minimum and maximum value
/// </summary>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
/// <param name="sampler">sampler to be used for image reading</param>
/// <param name="minValue">minimum value</param>
/// <param name="maxValue">maximum value</param>
public void Clamp(IImage2DFloat source, IImage2DFloat dest, float minValue, float maxValue)
{
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
int length = source.HostBuffer.Length;
for (int i = 0; i < length; i++)
{
float val = source.HostBuffer[i];
if (val < minValue) val = minValue;
else
if (val > maxValue) val = maxValue;
dest.HostBuffer[i] = val;
}
dest.Normalized = source.Normalized;
}
/// <summary>
/// Convert float image to byte image
/// </summary>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void FloatToByte(IImage2DFloat source, IImage2DByte dest)
{
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
if (source.Normalized)
{
// use normalized kernel
int length = source.HostBuffer.Length;
for (int i = 0; i < length; i++)
{
float val = 255f * source.HostBuffer[i];
if (val < 0) val = 0;
else
if (val > 255) val = 255;
dest.HostBuffer[i] = (byte)val;
}
}
else
{
// use normal kernel
int length = source.HostBuffer.Length;
for (int i = 0; i < length; i++)
{
float val = source.HostBuffer[i];
if (val < 0) val = 0;
else
if (val > 255) val = 255;
dest.HostBuffer[i] = (byte)val;
}
}
}
/// <summary>
/// Sets a constant value to all cells in an image
/// </summary>
/// <param name="image">image</param>
/// <param name="value">value to set</param>
public void SetValue(IImage2DFloat image, float value)
{
if (image == null) throw new ArgumentNullException("image");
image.HostBuffer.Clear(value);
}
