public MakeLevelsAuto ( ) : |
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Результат |
public override void RenderEffect(ImageSurface src, ImageSurface dest, Gdk.Rectangle[] rois) { HistogramRgb histogram = new HistogramRgb (); histogram.UpdateHistogram (src, new Gdk.Rectangle (0, 0, src.Width, src.Height)); op = histogram.MakeLevelsAuto (); if (op.isValid) op.Apply (dest, src, rois); }
public unsafe void AutoLevel() { ImageSurface dest = Surface.Clone (); ColorBgra* dstPtr = (ColorBgra*)dest.DataPtr; ColorBgra* srcPtr = (ColorBgra*)Surface.DataPtr; int len = Surface.Data.Length / 4; UnaryPixelOps.Level levels = null; HistogramRgb histogram = new HistogramRgb(); histogram.UpdateHistogram (Surface, new Rectangle (0, 0, Surface.Width, Surface.Height)); levels = histogram.MakeLevelsAuto(); if (levels.isValid) levels.Apply (dstPtr, srcPtr, len); using (Context g = new Context (Surface)) { g.AppendPath (PintaCore.Layers.SelectionPath); g.FillRule = FillRule.EvenOdd; g.Clip (); g.SetSource (dest); g.Paint (); } (dest as IDisposable).Dispose (); }