private IEnumerable <TPixelComponent> InvertRowComponent <TPixelComponent>(IEnumerable <TPixelComponent> row,
NetpbmImage <TPixelComponent> image, HashSet <int> componentIndices, Component from, Component to)
{
var componentCount = image.Header.Components.Count;
var oldRowPixels = row.Batch(componentCount);
foreach (var oldPixel in oldRowPixels)
{
var oldPixelArray = oldPixel.ToArray();
for (int c = 0; c < componentCount; ++c)
{
if (componentIndices.Contains(c))
{
yield return(image.InvertPixelValue(oldPixelArray[c]));
}
else
{
yield return(oldPixelArray[c]);
}
}
}
}