public void TestHashCodes()
{
var gray = new MemoryBitmap <Byte>(256, 256, Pixel.Luminance8.Format);
Assert.AreEqual(256, gray.Info.StepByteSize);
var grayWithStride = new MemoryBitmap <Byte>(256, 256, Pixel.Luminance8.Format, 320);
Assert.AreEqual(320, grayWithStride.Info.StepByteSize);
var rnd = new Random(117);
for (int i = 0; i < 256 * 256; ++i)
{
gray.SetPixel(i & 255, i / 256, (Byte)rnd.Next());
}
grayWithStride.SetPixels(0, 0, gray);
Assert.AreEqual(gray.GetHashCode(), grayWithStride.GetHashCode());
var span = gray.AsSpanBitmap();
var less = span.AsTypeless();
var hash = gray.GetHashCode();
Assert.AreEqual(1953103375, hash);
Assert.AreEqual(hash, gray.AsTypeless().GetHashCode());
Assert.AreEqual(hash, span.GetHashCode());
Assert.AreEqual(hash, less.GetHashCode());
}
public void TestConvertBitmaps()
{
var src = new MemoryBitmap(1920, 1080, Pixel.BGRA32.Format);
var dst = new MemoryBitmap(src.Info.WithPixelFormat<Pixel.RGBA32>());
dst.SetPixels(0, 0, src);
}
public void TestPointerBitmapSlice()
{
void _testSlice(PointerBitmap ptr)
{
ptr = ptr.Slice((1, 1, 2, 2));
Assert.AreEqual(true, ptr.IsReadOnly);
Assert.AreEqual(2, ptr.Width);
Assert.AreEqual(2, ptr.Height);
Assert.AreEqual(16, ptr.StepByteSize);
var ptrSpan = ptr.AsSpanBitmapOfType <int>();
Assert.AreEqual(0, ptrSpan.GetPixel(0, 0));
Assert.AreEqual(0, ptrSpan.GetPixel(1, 0));
Assert.AreEqual(0, ptrSpan.GetPixel(0, 1));
Assert.AreEqual(0, ptrSpan.GetPixel(1, 1));
}
var bmp = new MemoryBitmap <int>(4, 4, Pixel.ARGB32.Format);
bmp.SetPixels(int.MaxValue);
bmp.Slice((1, 1, 2, 2)).SetPixels(0);
bmp.AsSpanBitmap().PinReadablePointer(_testSlice);
}
public void CalculateImageBlurFactor(string filePath)
{
filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, filePath);
// load image using GDI
var bitmap = MemoryBitmap
.Load(filePath, Codecs.GDICodec.Default)
.AsSpanBitmap();
var blurfactor1 = Processing.SharpnessEvaluator.Evaluate(bitmap, 0.25);
// blur with openCV
bitmap.WithOpenCv().ApplyBlur((5, 5));
var blurfactor2 = Processing.SharpnessEvaluator.Evaluate(bitmap, 0.25);
// blur with openCV
bitmap.WithOpenCv().ApplyBlur((32, 32));
var blurfactor3 = Processing.SharpnessEvaluator.Evaluate(bitmap, 0.25);
TestContext.WriteLine($"{filePath} => {blurfactor1}, {blurfactor2}, {blurfactor3}");
bitmap.AttachToCurrentTestAll("final.png");
}
public void Example2()
{
var filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, "Resources\\shannon.webp");
// Use SkiaSharp to load a WEBP image:
var bmp = MemoryBitmap.Load(filePath, Codecs.SkiaCodec.Default);
// Use OpenCV to resize the image:
var span = bmp
.WithOpenCv()
.ToResizedMemoryBitmap(50, 50, OpenCvSharp.InterpolationFlags.Lanczos4)
.AsSpanBitmap();
// Use GDI to draw a triangle:
var a = new System.Drawing.Point(5, 5);
var b = new System.Drawing.Point(45, 45);
var c = new System.Drawing.Point(5, 45);
span
.WithGDI()
.Draw(dc => dc.DrawPolygon(System.Drawing.Pens.Red, new[] { a, b, c }));
// Use Imagesharp to save to PNG
span.AttachToCurrentTestAll("shannon.png");
}
public void Example1()
{
var filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, "Resources\\shannon.webp");
// Use SkiaSharp to load a WEBP image:
var bmp = MemoryBitmap.Load(filePath, Codecs.SkiaCodec.Default);
// Use OpenCV to resize the image:
/*
* bmp = bmp
* .WithOpenCv()
* .ToResizedMemoryBitmap(50, 50, OpenCvSharp.InterpolationFlags.Lanczos4);
*/
using (var proxy = bmp.UsingOpenCv())
{
proxy.Mat.Circle(new OpenCvSharp.Point(150, 150), 35, OpenCvSharp.Scalar.Red, 10);
// proxy.Mat.Blur(new OpenCvSharp.Size(4, 4));
// OpenCvSharp.Cv2.Blur(proxy.Mat, proxy.Mat, new OpenCvSharp.Size(4, 4));
}
using (var proxy = bmp.UsingGDI())
{
// Use GDI to draw a triangle:
var a = new System.Drawing.Point(5, 5);
var b = new System.Drawing.Point(50, 50);
var c = new System.Drawing.Point(5, 50);
proxy.Canvas.DrawPolygon(System.Drawing.Pens.Red, new[] { a, b, c });
}
using (var proxy = bmp.UsingImageSharp())
{
proxy.Image.Mutate(ipc => ipc.DrawPolygon(SixLabors.ImageSharp.Color.Blue, 2, (50, 5), (50, 50), (5, 5)));
}
using (var proxy = bmp.UsingSkiaSharp())
{
var p0 = new SkiaSharp.SKPoint(5, 25);
var p1 = new SkiaSharp.SKPoint(45, 25);
using var skiaPaint = new SkiaSharp.SKPaint
{
TextSize = 64.0f,
IsAntialias = true,
StrokeWidth = 20,
Color = new SkiaSharp.SKColor(0, 255, 0),
Style = SkiaSharp.SKPaintStyle.Fill
};
proxy.Canvas.DrawLine(p0, p1, skiaPaint);
proxy.Canvas.DrawText("SkiaSharp", new SkiaSharp.SKPoint(5, 200), skiaPaint);
}
// Use Imagesharp to save to PNG
bmp.Save(AttachmentInfo.From("shannon.png"));
}
public void DrawMemoryAsImageSharp()
{
var mem = MemoryBitmap.Load(ResourceInfo.From("shannon.jpg"), Codecs.GDICodec.Default);
mem.OfType <Pixel.BGRA32>()
.AsSpanBitmap()
.ReadAsImageSharp(img => { AttachmentInfo.From("result.png").WriteImage(img); return(0); });
}
public void CreateMemoryBitmap()
{
var m1 = new MemoryBitmap <UInt32>(16, 16, Pixel.BGRA32.Format);
m1.SetPixels(0xff406040);
m1.Save(new AttachmentInfo("result.png"));
}
public void LoadImage(string filePath)
{
filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, filePath);
var membmp = MemoryBitmap.Load(filePath, Codecs.OpenCvCodec.Default);
membmp.Save(AttachmentInfo.From("Result.png"));
}
public void TestSampler()
{
var map = new MemoryBitmap <Pixel.BGRA32>(16, 16);
map.SetPixels(new Pixel.BGRA32(255, 127, 63, 31));
var sampler = new Processing._PixelsTransformImplementation.SpanQuantized8Sampler <Pixel.BGRA32, Pixel.BGRA32>(map);
var pix = sampler.GetSourcePixelOrDefault(8, 8);
}
public void CreateMemoryBitmapWithKnownType()
{
var m1 = new MemoryBitmap <Pixel.BGRA32>(16, 16);
Assert.AreEqual(Pixel.BGRA32.Format, m1.PixelFormat);
var m2 = new MemoryBitmap <Pixel.BGRA32>(new Byte[256 * 4], 16, 16);
Assert.AreEqual(Pixel.BGRA32.Format, m2.PixelFormat);
}
public void TestTransform(bool useBilinear)
{
var src = LoadShannonImage().OfType <Pixel.BGR24>();
src.Save(new AttachmentInfo("input.png"));
var filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, "Resources\\cat.png");
var cat00 = MemoryBitmap
.Load(filePath, Codecs.GDICodec.Default)
.OfType <Pixel.BGRA32>();
filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, "Resources\\QRCode.png");
var qrcode = MemoryBitmap
.Load(filePath, Codecs.GDICodec.Default)
.OfType <Pixel.BGRA32>();
var x = Matrix3x2.CreateScale(0.75f, 0.75f) * Matrix3x2.CreateRotation(0.25f);
x.Translation = new Vector2(20, 20);
Matrix3x2.Invert(x, out var xx);
var dst = new MemoryBitmap <Pixel.BGR24>(512, 512);
using (PerformanceBenchmark.Run(t => TestContext.WriteLine($"Transform {(int)t.TotalMilliseconds}ms")))
{
dst.AsSpanBitmap().SetPixels(xx, src.AsSpanBitmap(), useBilinear);
}
for (float r = 0.1f; r < 1; r += 0.2f)
{
// 1st API
var xform = Matrix3x2.CreateRotation(r) * Matrix3x2.CreateTranslation(50, 15);
xform = Matrix3x2.CreateTranslation(-50, -50) * xform * Matrix3x2.CreateTranslation(50, 50);
xform = xform * Matrix3x2.CreateScale(3, 3);
dst.AsSpanBitmap().SetPixels(xform, cat00.AsSpanBitmap(), useBilinear, r);
DrawBounds(dst, cat00.Bounds, xform, Colors.Red);
// 2nd API
xform *= Matrix3x2.CreateTranslation(0, 150);
dst.AsSpanBitmap().SetPixels(xform, cat00.AsSpanBitmap(), useBilinear, r);
DrawBounds(dst, cat00.Bounds, xform, Colors.Red);
}
dst.AsSpanBitmap().SetPixels(Matrix3x2.CreateScale(3), cat00.AsSpanBitmap(), useBilinear);
dst.AsSpanBitmap().SetPixels(Matrix3x2.CreateScale(-.6f) * Matrix3x2.CreateTranslation(40, 200), cat00.AsSpanBitmap(), useBilinear);
dst.AsSpanBitmap().SetPixels(Matrix3x2.CreateScale(.3f) * Matrix3x2.CreateRotation(1) * Matrix3x2.CreateTranslation(150, 300), qrcode.AsSpanBitmap(), useBilinear);
dst.Save(new AttachmentInfo("transformed.png"));
}
public void LoadKinect2ColorFrame()
{
TestContext.CurrentContext.AttachFolderBrowserShortcut();
var src = MemoryBitmap <ushort> .Load(ResourceInfo.From("Kinect2Color.InteropBmp"));
var dst = new MemoryBitmap <Pixel.BGR24>(src.Width, src.Height);
dst.AsSpanBitmap().SetPixelsFromYUY2(src);
dst.Save(AttachmentInfo.From("kinect2color.jpg"));
}
public void TestTransformWithConversion()
{
var src = LoadShannonImage().OfType <Pixel.BGR24>();
src.Save(new AttachmentInfo("input.png"));
var dst = new MemoryBitmap <Pixel.RGB96F>(512, 512);
dst.AsSpanBitmap().SetPixels(Matrix3x2.CreateScale(0.7f), src.AsSpanBitmap(), true, 1);
dst.Save(new AttachmentInfo("transformed.png"));
}
private static MemoryBitmap LoadShannonImage()
{
var filePath = System.IO.Path.Combine(TestContext.CurrentContext.TestDirectory, "Resources\\shannon.jpg");
// load a bitmap with SkiaSharp, which is known to support WEBP.
var mem = MemoryBitmap.Load(filePath, Codecs.GDICodec.Default);
var mem2 = new MemoryBitmap(mem.Width, mem.Height, Pixel.BGR24.Format);
mem2.SetPixels(0, 0, mem);
return(mem2);
}
public void TestFlipPerformance(int w, int h, bool multiThread, bool hflip, bool vflip)
{
var bmp = new MemoryBitmap <Pixel.RGB24>(w, h).AsSpanBitmap();
var mirrorEffect = new Processing.BitmapMirror(hflip, vflip, multiThread);
using (PerformanceBenchmark.Run(t => TestContext.WriteLine($"{w}x{h} HFlip:{hflip} VFlip:{vflip} {Math.Round(t.TotalMilliseconds / 1000)}ms")))
{
for (int r = 0; r < 1000; ++r)
{
bmp.ApplyEffect(mirrorEffect);
}
}
}
public static void AttachToCurrentTestAll(this SpanBitmap bmp, string filePath)
{
var mem = bmp.ToMemoryBitmap();
TestContext.WriteLine($"{filePath} {bmp.Info.ToDebuggerDisplayString()}");
if (bmp.PixelFormat == Pixel.BGR96F.Format || bmp.PixelFormat == Pixel.RGB96F.Format)
{
var tmp = new MemoryBitmap(bmp.Width, bmp.Height, Pixel.BGR24.Format);
SpanBitmap.CopyPixels(bmp.OfType <System.Numerics.Vector3>(), tmp, (0, 1), (0, 255));
bmp = tmp;
}
AttachmentInfo _injectExt(string fp, string extPrefix)
{
var ext = System.IO.Path.GetExtension(fp);
fp = fp.Substring(0, fp.Length - ext.Length);
return(new AttachmentInfo($"{fp}.{extPrefix}{ext}"));
}
var f1 = _injectExt(filePath, "WPF");
mem.Save(f1, WPFCodec.Default);
var f2 = _injectExt(filePath, "GDI");
mem.Save(f2, GDICodec.Default);
var f3 = _injectExt(filePath, "ImageSharp");
mem.Save(f3, ImageSharpCodec.Default);
var f4 = _injectExt(filePath, "SkiaSharp");
mem.Save(f4, SkiaCodec.Default);
var f5 = _injectExt(filePath, "OpenCvSharp");
mem.Save(f5, OpenCvCodec.Default);
var f6 = _injectExt(filePath, "STB");
mem.Save(f6, STBCodec.WithQuality(80));
// TODO: it should compare saved files against bmp
}
public void CopyPixelsWithStride()
{
var m1 = new MemoryBitmap <UInt32>(16, 16, Pixel.BGRA32.Format);
m1.SetPixel(0, 0, 0xff00ff00);
m1.SetPixel(0, 1, 0xffff00ff);
var m2 = new MemoryBitmap <UInt32>(16, 16, Pixel.BGRA32.Format, 17 * 4);
m2.SetPixels(0, 0, m1);
m2.Save(new AttachmentInfo("result.png"));
Assert.AreEqual(0xff00ff00, m2.GetPixel(0, 0));
Assert.AreEqual(0xffff00ff, m2.GetPixel(0, 1));
}
public void ResizeTest1(int dstSize)
{
var src = LoadShannonImage();
var dst = new MemoryBitmap(dstSize, dstSize, Pixel.BGR24.Format, dstSize * 3 + 17);
BitmapsToolkit.FitPixels(src, dst, (0, 1));
var sw = System.Diagnostics.Stopwatch.StartNew();
BitmapsToolkit.FitPixels(src, dst, (0, 1));
var elapsed = sw.Elapsed;
TestContext.WriteLine($"{elapsed.Milliseconds}ms {elapsed.Ticks}ticks");
src.Save(AttachmentInfo.From("input.png"));
dst.Save(AttachmentInfo.From($"output_{dstSize}.png"));
}
public void CopyGreyPixels()
{
var src = new MemoryBitmap <float>(177, 177).Slice((10, 10, 150, 150));
var dst = new MemoryBitmap <Byte>(177, 177).Slice((10, 10, 150, 150));
src.SetPixels(1);
var(min, max) = SpanBitmap.MinMax(src);
Assert.AreEqual(min, 1);
Assert.AreEqual(max, 1);
SpanBitmap.CopyPixels(src, dst, (0, 128), (0, 255));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel == 128));
SpanBitmap.CopyPixels(src, dst, (0, 1), (10, 255));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel == 10));
SpanBitmap.CopyPixels(src, dst, (0, 1), (2, 3));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel == 2));
}
public void CopyRGBPixels()
{
var src = new MemoryBitmap <Vector3>(177, 177).Slice((10, 10, 150, 150));
var dst = new MemoryBitmap <PixelBGR>(177, 177).Slice((10, 10, 150, 150));
src.SetPixels(Vector3.One);
Assert.IsTrue(SpanBitmap.ArePixelsEqual(src, src));
SpanBitmap.CopyPixels(src, dst, (0, 128), (0, 255));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel.Equals(new PixelBGR(128))));
SpanBitmap.CopyPixels(src, dst, (0, 1), (10, 255));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel.Equals(new PixelBGR(10))));
SpanBitmap.CopyPixels(src, dst, (0, 1), (2, 3));
Assert.IsTrue(dst.EnumeratePixels().All(p => p.Pixel.Equals(new PixelBGR(2))));
Assert.IsTrue(SpanBitmap.ArePixelsEqual(dst, dst));
}
private void _AsyncUpdateBitmap()
{
var bmp = new Graphics.Bitmaps.MemoryBitmap(256, 256, Graphics.Bitmaps.Pixel.BGR24.Format);
var rnd = new Random();
while (true)
{
System.Threading.Thread.Sleep(1000 / 100);
if (bmp.TryGetBuffer(out var buffer))
{
var data = System.Runtime.InteropServices.MemoryMarshal.Cast <byte, int>(buffer.Array);
for (int i = 0; i < data.Length; ++i)
{
data[i] = rnd.Next();
}
}
}
}
public void TestReinterpretBitmaps()
{
var src = new MemoryBitmap<Pixel.BGRA32>(16, 16);
src.SetPixel(0, 0, (255, 0, 0, 255));
var dst = src.AsSpanBitmap().ReinterpretAs<Pixel.RGBA32>();
var p = dst.GetPixel(0, 0);
Assert.AreEqual(0, p.R);
Assert.AreEqual(0, p.G);
Assert.AreEqual(255, p.B); // formerly R
Assert.AreEqual(255, p.A);
// float RGB to Vector3
var bgr = new MemoryBitmap<Pixel.BGR96F>(16, 16);
var xyz = bgr.AsSpanBitmap().ReinterpretAs<System.Numerics.Vector3>();
}
public void SetPixels()
{
var dst = new MemoryBitmap <Byte>(16, 16, Pixel.Luminance8.Format);
var src = new MemoryBitmap <Byte>(8, 8, Pixel.Luminance8.Format);
src.SetPixels(50);
dst.SetPixels(4, 4, src);
src.SetPixels(255);
dst.SetPixels(-4, -4, src);
src.SetPixels(130);
dst.SetPixels(12, -4, src);
src.SetPixels(255);
dst.SetPixels(12, 12, src);
src.SetPixels(70);
dst.SetPixels(-4, 12, src);
dst.SetPixels(-50, 0, src);
dst.Save(new AttachmentInfo("Result.png"));
}
public static void DrawBounds <TPixel>(MemoryBitmap <TPixel> target, in BitmapBounds bounds, in Matrix3x2 xform, TPixel color)
public BindableBitmap(MemoryBitmap bmp)
{
_Bitmap = bmp;
}
public static System.IO.FileInfo WriteImage(this AttachmentInfo ainfo, MemoryBitmap image)
{
return(ainfo.WriteObject(f => image.Save(f)));
}
