public void CheckPassingOrTest()
{
// given: chain with filters
var chain = new PixelFilterChain()
{
Mode = LogicMode.Or
};
var valueFilter1 = new Mock <IPixelValueFilter>(MockBehavior.Strict);
valueFilter1.Setup(v => v.Check(It.IsAny <byte>())).Returns(false);
var valueFilter2 = new Mock <IPixelValueFilter>(MockBehavior.Strict);
valueFilter2.Setup(v => v.Check(It.IsAny <byte>())).Returns(false);
var indexFilter1 = new Mock <IPixelIndexFilter>(MockBehavior.Strict);
indexFilter1.Setup(i => i.Check(It.IsAny <int>())).Returns(false);
var indexFilter2 = new Mock <IPixelIndexFilter>(MockBehavior.Strict);
indexFilter2.Setup(i => i.Check(It.IsAny <int>())).Returns(true);
chain.AddPixelFilter(valueFilter1.Object);
chain.AddPixelFilter(valueFilter2.Object);
chain.AddPixelFilter(indexFilter1.Object);
chain.AddPixelFilter(indexFilter2.Object);
// when: checking
// then: passes
Assert.That(chain.Check(0, 0), Is.True);
}
public void CheckEmptyTest()
{
// given: empty chain
var chain = new PixelFilterChain();
// when: checking with empty chain
// then: passes
Assert.That(chain.Check(0, 0), Is.True);
}
/// <summary>
/// Processes the pixels of the given <paramref name="plane"/>
/// in the given <paramref name="bounds"/> with the
/// given <paramref name="processorFunc"/>.
/// </summary>
/// <param name="plane">The plane whose pixels to process.</param>
/// <param name="bounds">Bounds defining which pixels to process.</param>
/// <param name="processorFunc">Func that takes a byte, processes
/// it and returns a byte.</param>
/// <param name="filterChain">Optional filter chain.</param>
public static void ProcessMono(ImagePlane plane, ProcessingBounds bounds, Func <byte, byte> processorFunc, PixelFilterChain filterChain)
{
if (filterChain == null || !filterChain.HasActiveFilter)
{
ProcessMono(plane, bounds, processorFunc);
return;
}
if (processorFunc == null)
{
throw new ArgumentNullException(nameof(processorFunc));
}
if (plane.TryGetLinearAccess(out LinearAccessData data))
{
var yInc = (int)data.YInc;
var xInc = (int)data.XInc;
int startY = bounds.StartY;
int startX = bounds.StartX;
int boundsY = startY + bounds.Height;
int boundsX = startX + bounds.Width;
unsafe
{
var pBase = (byte *)data.BasePtr;
Parallel.For(startY, boundsY, (y) =>
{
byte *pLine = pBase + yInc * y;
for (int x = startX; x < boundsX; x++)
{
byte *pPixel = pLine + xInc * x;
if (filterChain.Check(*pPixel, y * boundsY + x))
{
*pPixel = processorFunc.Invoke(*pPixel);
}
}
});
}
}
else
{
throw new ArgumentException("Plane could not be accessed linear", nameof(plane));
}
}
/// <summary>
/// Processes the given rgb <paramref name="img"/> in the
/// given <paramref name="bounds"/> with
/// the given <paramref name="processingFunc"/>.
/// </summary>
/// <param name="img">Image to process.</param>
/// <param name="processingFunc">Processing function to process
/// the <paramref name="img"/> with.</param>
/// <param name="bounds">Bounds defining which pixels to process.</param>
/// <param name="filterChain">Optional filter chain.</param>
public static void ProcessRGB(Image img, Func <RGBPixel, RGBPixel> processingFunc, ProcessingBounds bounds, PixelFilterChain filterChain)
{
if (filterChain == null || !filterChain.HasActiveFilter)
{
ProcessRGB(img, processingFunc, bounds);
return;
}
if (img == null)
{
throw new ArgumentNullException(nameof(img));
}
if (img.Planes.Count < 3)
{
throw new ArgumentException("Image is no rgb image", nameof(img));
}
if (processingFunc == null)
{
throw new ArgumentNullException(nameof(processingFunc));
}
if (img.Planes[0].TryGetLinearAccess(out LinearAccessData rData) &&
img.Planes[1].TryGetLinearAccess(out LinearAccessData gData) &&
img.Planes[2].TryGetLinearAccess(out LinearAccessData bData))
{
int startY = bounds.StartY;
int startX = bounds.StartX;
int boundsY = startY + bounds.Height;
int boundsX = startX + bounds.Width;
var rYInc = (int)rData.YInc;
var gYInc = (int)gData.YInc;
var bYInc = (int)bData.YInc;
var rXInc = (int)rData.XInc;
var gXInc = (int)gData.XInc;
var bXInc = (int)bData.XInc;
unsafe
{
var pBaseR = (byte *)rData.BasePtr;
var pBaseG = (byte *)gData.BasePtr;
var pBaseB = (byte *)bData.BasePtr;
Parallel.For(startY, boundsY, (y) =>
{
byte *rLine = pBaseR + rYInc * y;
byte *gLine = pBaseG + gYInc * y;
byte *bLine = pBaseB + bYInc * y;
for (int x = startX; x < boundsX; x++)
{
byte *rPixel = rLine + rXInc * x;
byte *gPixel = gLine + gXInc * x;
byte *bPixel = bLine + bXInc * x;
if (filterChain.Check(*rPixel, *gPixel, *bPixel, y * boundsY + x))
{
var result = processingFunc.Invoke(new RGBPixel(*rPixel, *gPixel, *bPixel));
*rPixel = result.R;
*gPixel = result.G;
*bPixel = result.B;
}
}
});
}
}
public static ImagePlane ProcessMonoKernel(ImagePlane plane, Func <byte?[], byte> processingFunc, KernelSize kernel, ProcessingBounds bounds, PixelFilterChain filterChain)
{
if (filterChain == null || !filterChain.HasActiveFilter)
{
return(ProcessMonoKernel(plane, processingFunc, kernel, bounds));
}
if (plane.TryGetLinearAccess(out LinearAccessData data))
{
var newImage = Image.FromPlanes(MappingOption.CopyPixels, plane);
var newData = newImage.Planes[0].GetLinearAccess();
var yInc = (int)data.YInc;
var xInc = (int)data.XInc;
var newYInc = (int)newData.YInc;
var newXInc = (int)newData.XInc;
int boundHeight = plane.Parent.Height - 1;
int boundWidth = plane.Parent.Width - 1;
int startY = bounds.StartY;
int startX = bounds.StartX;
int boundsY = startY + bounds.Height;
int boundsX = startX + bounds.Width;
int kernelSize = kernel.GetKernelNumber();
int kernelArrSize = kernelSize * kernelSize;
var kernelFac = (int)System.Math.Floor(kernelSize / 2.0);
unsafe
{
var pBase = (byte *)data.BasePtr;
var pBaseNew = (byte *)newData.BasePtr;
Parallel.For(startY, boundsY, (y) =>
{
var kernelValues = new byte?[kernelArrSize];
var pLine = pBase + y * yInc;
int newLineInc = newYInc * y;
for (int x = startX; x < boundsX; x++)
{
int kernelCounter = -1;
var pMiddle = pLine + xInc * x;
for (int kRow = -kernelFac; kRow <= kernelFac; kRow++)
{
byte *pKLine = pMiddle + kRow * yInc;
int yKRow = y + kRow;
for (int kColumn = -kernelFac; kColumn <= kernelFac; kColumn++)
{
kernelCounter++;
int xKColumn = x + kColumn;
if (yKRow < 0 || yKRow > boundHeight || xKColumn < 0 || xKColumn > boundWidth)
{
continue;
}
byte *pPixel = pKLine + kColumn * xInc;
if (filterChain.Check(*pPixel, y * boundsY + x))
{
kernelValues[kernelCounter] = *pPixel;
}
}
}
if (kernelValues.Any(b => b.HasValue))
{
var pTargetLine = pBaseNew + newLineInc;
var pTargetPixel = pTargetLine + newXInc * x; // current "middle pixel" in the target image
*pTargetPixel = processingFunc.Invoke(kernelValues);
}
}
});
}
return(newImage.Planes[0]);
}
else
{
throw new ArgumentException("Plane could not be accessed linear", nameof(plane));
}
}