RawImage* MedianFilter::ProcessInput(CommandLineArgModel* arg, RawImage* image)
{
MedianFilterModel* model = (MedianFilterModel*)arg->ParsedModel;
if (model->Window == 1) return image;
Rectangle roi = model->Roi;
int padding = (model->Window - 1) / 2;
int window = model->Window;
RawImage* returnValue = NULL;
if (padding > 1)
{
if (model->Y)
{
returnValue = image->Clone();
for (int x = roi.X; x < roi.Right; x++)
for (int y = roi.Y; y < roi.Bottom; y++)
returnValue->SetPixel(x, y, image->GetAverage(x, y - padding, 1, window, roi));
image = returnValue;
}
if (model->X)
{
returnValue = image->Clone();
for (int x = roi.X; x < roi.Right; x++)
for (int y = roi.Y; y < roi.Bottom; y++)
returnValue->SetPixel(x, y, image->GetAverage(x - padding, y, window, 1, roi));
}
}
return returnValue == NULL ? image : returnValue;
}
RawImage* ScaleFilter::scaleUp(double scale, RawImage* image)
{
ImageSize size = image->GetSize();
int newHeight = (int)round(size.Height * scale);
int newWidth = (int)round(size.Width * scale);
RawImage* returnValue = new RawImage(newWidth, newHeight);
Rectangle roi = fromSize(size);
double scaleDown = 1.0 / scale;
for (int y = 0; y < newHeight; y++)
for (int x = 0; x < newWidth; x++)
{
int sourceX = (int)round((double)x * scaleDown);
int sourceY = (int)round((double)y * scaleDown);
if (sourceX < roi.Width && sourceY < roi.Height)
returnValue->SetPixel(x, y, image->GetPixel(sourceX, sourceY));
}
MedianFilterModel* model = new MedianFilterModel();
model->hasRoi = true;
model->Roi = fromSize(returnValue->GetSize());
model->Window = (int)ceil(scale * 3.0);
model->X = true;
model->Y = true;
CommandLineArgModel* command = new CommandLineArgModel();
command->ParsedModel = model;
return median->ProcessInput(command, returnValue);
}
RawImage* ScaleFilter::scaleDown(double scale, RawImage* image)
{
ImageSize size = image->GetSize();
int newHeight = (int)round((double)size.Height * scale);
int newWidth = (int)round((double)size.Width * scale);
RawImage* returnValue = new RawImage(newWidth, newHeight);
Rectangle roi = fromSize(size);
double scaleUp = 1.0 / scale;
int scaleWindow = max((int)floor(scaleUp), 1);
if (scaleWindow % 2 == 0) scaleWindow++;
for (int y = 0; y < newHeight; y++)
for (int x = 0; x < newWidth; x++)
{
int sourceX = (int)round((double)x * scaleUp);
int sourceY = (int)round((double)y * scaleUp);
returnValue->SetPixel(x, y, image->GetAverage(sourceX, sourceY, scaleWindow, scaleWindow, roi));
}
return returnValue;
}
