public static int[,] ApplyFilter(ImageChunk wholeChunk, ConvolutionFilterMatrix filter)
{
int[,] accumlator = new int[wholeChunk.Width, wholeChunk.Height];
using (var pixels = wholeChunk.LockPixels())
{
for (int y = 0; y < wholeChunk.Height; y++)
{
for (int x = 0; x < wholeChunk.Width; x++)
{
for (int filterXOffset = 0; filterXOffset < filter.Width; filterXOffset++)
{
for (int filterYOffset = 0; filterYOffset < filter.Height; filterYOffset++)
{
int pixelXOffset = x + filterXOffset - 1;
int pixelYOffset = y + filterYOffset - 1;
if (pixelXOffset >= 0 && pixelXOffset < wholeChunk.Width && pixelYOffset >= 0 &&
pixelYOffset < wholeChunk.Height)
{
Color pixel = pixels.GetPixel(pixelXOffset, pixelYOffset);
int gray = (pixel.R + pixel.G + pixel.B) / 3;
accumlator[x, y] += (int)filter.Multiplier.Multiply((filter[filterXOffset, filterYOffset] * gray));
}
}
}
}
}
}
return(accumlator);
}
private void PopulateHistogram(ImageChunk chunk)
{
foreach (var color in chunk.GetAllColors())
{
Add(color);
}
}
public LoadModule(ImageChunk image)
{
if (image == null)
throw new ArgumentNullException("image");
this.image = image;
}
public RgbHistogram(ImageChunk chunk)
{
Histograms[ColorAspects.R] = new Histogram(Buckets);
Histograms[ColorAspects.G] = new Histogram(Buckets);
Histograms[ColorAspects.B] = new Histogram(Buckets);
PopulateHistogram(chunk);
}
public LoadModule(ImageChunk image)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
this.image = image;
}
private ImageStats GetImageStats(ImageRegion region, FastBitmap imageBitmap)
{
var imageChunk = new ImageChunk(imageBitmap, region);
return(new ImageStats(
_averageGreyCalculator.CaluclateAverageDark(imageChunk),
_averageGreyByRegionCalculator.GetStatByRegion(imageChunk),
_histogramCalculator.CaluclateHistogram(imageChunk)));
}
public override void EventOccurred(IEventData data, EventType type)
{
if (type != EventType.RENDER_IMAGE)
{
return;
}
var counter = _increaseCounter();
var renderInfo = (ImageRenderInfo)data;
var imageObject = renderInfo.GetImage();
Bitmap image;
try
{
var imageBytes = imageObject.GetImageBytes();
image = new Bitmap(new MemoryStream(imageBytes));
}
catch (Exception exp)
{
Console.WriteLine(exp);
return;
}
var smask = imageObject.GetPdfObject().GetAsStream(PdfName.SMask);
if (smask != null)
{
try
{
var maskImageObject = new PdfImageXObject(smask);
var maskBytes = maskImageObject.GetImageBytes();
using var maskImage = new Bitmap(new MemoryStream(maskBytes));
image = GenerateMaskedImage(image, maskImage);
}
catch (Exception exp)
{
Console.WriteLine(exp);
}
}
var matix = renderInfo.GetImageCtm();
var imageChunk = new ImageChunk
{
X = matix.Get(Geom.Matrix.I31),
Y = matix.Get(Geom.Matrix.I32),
W = matix.Get(Geom.Matrix.I11),
H = matix.Get(Geom.Matrix.I22),
Image = image
};
_chunkDictionairy.Add(counter, imageChunk);
base.EventOccurred(data, type);
}
public Dictionary <Point, T> GetStatByRegion(ImageChunk chunk)
{
var statByRegionDictionary = new Dictionary <Point, T>();
foreach (ImageChunk subChunk in chunk.GetSubChunks(_regionCreationStrategy))
{
statByRegionDictionary[CalculateLocalizedOrigin(subChunk.Origin, chunk)] = _statCalculatorFunc(subChunk);
}
/*
* foreach (var subRegion in _regionCreationStrategy.GetRegions(outerRegion))
* {
* statByRegionDictionary[CalculateLocalizedOrigin(subRegion.Origin, outerRegion)] = _statCalculatorFunc(new ImageChunk(bitmap, subRegion));
* }
*/
return(statByRegionDictionary);
}
public override async Task ShowMessage(MessageRequest request, IServerStreamWriter <MessageReply> responseStream, ServerCallContext context)
{
using var tokenSource = new CancellationTokenSource();
CancellationToken token = tokenSource.Token;
var meta = new MessageReply();
var metaData = new ImageMetaData();
metaData.FileName = "kitty.jpg";
metaData.MimeType = "image/jpeg";
meta.MetaData = metaData;
await responseStream.WriteAsync(meta);
var kitty = Path.Combine(_env.ContentRootPath, "kitty.jpg");
using var reader = new FileStream(kitty, FileMode.Open);
int chunkSize = 100;
int bytesRead;
byte[] buffer = new byte[chunkSize];
int position = 0;
long length = reader.Length;
while ((bytesRead = await reader.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
var reply = new MessageReply();
var chunk = new ImageChunk();
chunk.Length = bytesRead;
chunk.Data = ByteString.CopyFrom(buffer);
reply.Chunk = chunk;
await responseStream.WriteAsync(reply);
position += bytesRead;
Console.WriteLine(position);
}
reader.Close();
Console.WriteLine("Done");
}
/*
* public int CaluclateAverageDark(ImageRegion region, FastBitmap bitmap)
* {
* int totalGrey = 0;
*
* bitmap.Lock();
* for (int xOffset = 0; xOffset < region.Width; xOffset++)
* {
* for (int yOffset = 0; yOffset < region.Height; yOffset++)
* {
* Color color = bitmap.GetPixel(region.X + xOffset, region.Y + yOffset);
*
* totalGrey += color.R + color.G + color.B;
* }
* }
* bitmap.Unlock();
*
* return totalGrey/(3*region.Width*region.Height);
* }
*/
public int CaluclateAverageDark(ImageChunk chunk)
{
int totalGrey = 0;
int area;
using (ImageChunk.ImageChunkPixels pixels = chunk.LockPixels())
{
for (int xOffset = 0; xOffset < pixels.Width; xOffset++)
{
for (int yOffset = 0; yOffset < pixels.Height; yOffset++)
{
Color color = pixels.GetPixel(pixels.X + xOffset, pixels.Y + yOffset);
totalGrey += color.R + color.G + color.B;
}
}
area = 3 * pixels.Width * pixels.Height;
}
return(totalGrey / area);
}
public ImageByte(ImageChunk image, int index)
{
this.image = image;
this.index = index;
}
private Point CalculateLocalizedOrigin(Point pointInRegion, ImageChunk chunk)
{
return(new Point(pointInRegion.X - chunk.X, pointInRegion.Y - chunk.Y));
}
public ImageByte(ImageChunk image, int index)
{
this.image = image;
this.index = index;
}
public RgbHistogram CaluclateHistogram(ImageChunk chunk)
{
return(new RgbHistogram(chunk));
}
private void LoadButton_OnClick(object sender, RoutedEventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = "c:\\";
openFileDialog1.Filter = "Image files (*.jpg)|*.jpg|All files (*.*)|*.*";
openFileDialog1.FilterIndex = 1;
openFileDialog1.RestoreDirectory = true;
// ConvolutionFilterMatrix filter = new ConvolutionFilterMatrix("-1 -1 -1,0 0 0,1 1 1");
// ConvolutionFilterMatrix filter = new ConvolutionFilterMatrix("-1 0 1,-1 0 1,-1 0 1");
IEnumerable <ConvolutionFilterMatrix> filters = new ConvolutionFilterMatrix[]
{
new ConvolutionFilterMatrix("-1 -1 -1,0 0 0,1 1 1"),
new ConvolutionFilterMatrix("1 1 1,0 0 0,-1 -1 -1"),
new ConvolutionFilterMatrix("-1 0 1,-1 0 1,-1 0 1"),
new ConvolutionFilterMatrix("1 0 -1,1 0 -1,1 0 -1"),
new ConvolutionFilterMatrix("-1 0 0 0 0,0 -2 0 0 0,0 0 6 0 0,0 0 0 -2 0,0 0 0 0 -1"),
new ConvolutionFilterMatrix("0 0 0 0 -1,0 0 0 -2 0,0 0 6 0 0,0 -2 0 0 0,-1 0 0 0 0"),
// new ConvolutionFilterMatrix("-1 0 0 0 0,0 -1 0 0 0,0 0 0 0 0,0 0 0 1 0,0 0 0 0 1"), // My experiment 45 degree filter
new ConvolutionFilterMatrix("-1 0 0,0 0 0,0 0 1", new LowValuesHighZeroLowConvolutionFilterMultiplier()),
new ConvolutionFilterMatrix("1 0 0,0 0 0,0 0 -1", new LowValuesHighZeroLowConvolutionFilterMultiplier()),
new ConvolutionFilterMatrix("0 0 1,0 0 0,-1 0 0", new LowValuesHighZeroLowConvolutionFilterMultiplier()),
new ConvolutionFilterMatrix("0 0 -1,0 0 0,1 0 0", new LowValuesHighZeroLowConvolutionFilterMultiplier()),
// new ConvolutionFilterMatrix("0 0 0 0 0,0 0 0 0 0,0 0 6 0 0,0 0 0 0 0,0 0 0 0 0"),
new ConvolutionFilterMatrix("0 0 1,0 1 -1,1 -1 0"),
new ConvolutionFilterMatrix("0 0 0,0 1 0,0 0 0"),
};
var showDialog = openFileDialog1.ShowDialog();
if (showDialog.HasValue && showDialog.Value)
{
BitmapImage origBitmapImage = new BitmapImage(new Uri(openFileDialog1.FileName));
originalImage.Source = origBitmapImage;
Bitmap b = new Bitmap(openFileDialog1.FileName);
FastBitmap bitmap = new FastBitmap(b);
ImageChunk wholeChunk = new ImageChunk(bitmap, new ImageRegion(0, 0, bitmap.Width, bitmap.Height));
List <FilterResult> results = new List <FilterResult>();
foreach (ConvolutionFilterMatrix filter in filters)
{
var filterAccumulator = ConvolutionFilterResultGenerator.ApplyFilter(wholeChunk, filter);
FastBitmap resultBitmap = ConvolutionFilterResultGenerator.ResultToBitmap(filterAccumulator);
// resultBitmap.ToBitmap().Save(@"c:\src\tmp.jpg");
results.Add(new FilterResult()
{
Filter = filter,
Total = filterAccumulator.Flatten().Sum(),
NormalizedTotal = filterAccumulator.Flatten().Select(v => v < 0 ? 0 : (v > 255 ? 255 : 0)).Sum(),
ResultBitmap = BitmapToImageSource(resultBitmap.ToBitmap())
});
}
this.filterResultList.ItemsSource = results.OrderByDescending(f => f.Total).ToList();
}
}