public override void Process(PixelBuffer target)
{
if (target.width != previousFrame.width || target.height != previousFrame.height)
{
return;
}
temporaryBuffer.FastClone(target);
if (!EdgeDettection)
{
Parallel.For(1, target.height - 1, (y) =>
{
for (int x = 1; x < target.width - 1; x++)
{
int cur = target.width * y + x;
int up = target.width * (y - 1) + x;
int left = target.width * y + x - 1;
int down = target.width * (y + 1) + x;
int right = target.width * y + x + 1;
float differenceV = dist(
target.uint0[up],
target.uint0[down]);
float differenceH = dist(
target.uint0[right],
target.uint0[left]);
float factor = differenceH > differenceV ? differenceH : differenceV;
factor = 0.95f * adjust(factor);
temporaryBuffer.uint0[cur] = avg(
previousFrame.uint0[cur],
target.uint0[cur],
factor / 2);
//copy.buffer[cur] = (uint)(factor * 255) * 0x00010101 + 0xff000000;
}
});
target.FastClone(temporaryBuffer);
previousFrame.FastClone(target);
}
else
{
Parallel.For(1, target.height - 1, (y) =>
{
for (int x = 1; x < target.width - 1; x++)
{
int cur = target.width * y + x;
int up = target.width * (y - 1) + x;
int left = target.width * y + x - 1;
int down = target.width * (y + 1) + x;
int right = target.width * y + x + 1;
float differenceV = dist(
target.uint0[up],
target.uint0[down]);
float differenceH = dist(
target.uint0[right],
target.uint0[left]);
float factor = differenceH > differenceV ? differenceH : differenceV;
factor = 0.95f * adjust(factor);
temporaryBuffer.uint0[cur] = (uint)(factor * 255) * 0x10101u;
}
});
previousFrame.FastClone(target);
target.FastClone(temporaryBuffer);
}
target.FastClone(temporaryBuffer);
previousFrame.FastClone(target);
return;
float adjust(float x) => - x * x + 2 * x;
float dist(uint pixel1, uint pixel2)
{
float sum = 0f;
int tmp;
tmp = (byte)pixel1 - (byte)pixel2;
sum += tmp * tmp / 255f;
pixel1 >>= 8;
pixel2 >>= 8;
tmp = (byte)pixel1 - (byte)pixel2;
sum += tmp * tmp / 255f;
pixel1 >>= 8;
pixel2 >>= 8;
tmp = (byte)pixel1 - (byte)pixel2;
sum += tmp * tmp / 255f;
return(sum / (3f * 255f));
}
uint avg(uint pixel1, uint pixel2, float factor1)
{
uint res = 0;
for (int i = 0; i < 3; i++)
{
res += (uint)(factor1 * (byte)pixel1 + (1 - factor1) * (byte)pixel2) << (8 * i);
pixel1 >>= 8;
pixel2 >>= 8;
}
res += 0xff000000;
return(res);
}
}
