public static Image1ub ToUnsignedByte( this Image1f im )
{
var output = new Image1ub( im.Size );
for( int k = 0; k < im.NumPixels; ++k )
{
output[ k ] = im[ k ].ToUnsignedByte();
}
return output;
}
public static void SavePNG( this BitArray arr, Rect2i rect, Vector2i imageSize, string filename )
{
Image1ub im = new Image1ub( imageSize );
int i = 0;
int x0 = rect.Origin.x;
int y0 = rect.Origin.y;
for( int y = 0; y < rect.Height; ++y )
{
for( int x = 0; x < rect.Width; ++x )
{
if( arr[ i ] )
{
im.SetPixelFlipped( x0 + x, y0 + y, 255 );
}
++i;
}
}
im.SavePNG( filename );
}
public static void Apply( Image1f input, Image1ub output )
{
if( input.Size != output.Size )
{
throw new ArgumentException( "input and output must be of the same size" );
}
float min;
float max;
input.Pixels.MinMax( f => f, out min, out max );
float reciprocalRange = 1.0f / ( max - min );
for( int k = 0; k < input.NumPixels; ++k )
{
float vIn = input[ k ];
float vOut = ( vIn - min ) * reciprocalRange;
output[ k ] = FormatConversion.ToUnsignedByte( vOut );
}
}
