public unsafe void Process(byte *imgPtr, int i, ARGBChannel channel)
{
try
{
var index = (int)channel;
*(imgPtr + (i + index)) = (byte)(255 - *(imgPtr + (i + index)));
}
catch { }
}
public unsafe void Process(byte *imgPtr, int i, ARGBChannel channel)
{
try
{
var index = (int)channel;
*(imgPtr + (i + index)) = (byte)((*(imgPtr + i)
+ *(imgPtr + (i + 1))
+ *(imgPtr + (i + 2)))
/ 3);
}
catch { }
}
public unsafe void Process(byte *imgPtr, int i, ARGBChannel channel)
{
try
{
var index = (int)channel;
var avg = (byte)((*(imgPtr + i) + *(imgPtr + (i + 1)) + *(imgPtr + (i + 2))) / 3);
var v = (byte)(
((*(imgPtr + i) - avg) * (*(imgPtr + i) - avg)
+ (*(imgPtr + (i + 1)) - avg) * (*(imgPtr + (i + 1)) - avg)
+ (*(imgPtr + (i + 2)) - avg) * (*(imgPtr + (i + 2)) - avg))
/ 3);
*(imgPtr + (i + index)) = v;
}
catch { }
}