Statistics.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;
namespace ColorStatistics
{
    static unsafe class Statistics
    {
       
        
        //'*****************************************************************************************
        //'**    开发日期 ：  2013-6-21
        //'**    作    者 ：  laviewpbt
        //'**    联系方式：   33184777
        //'**    修改日期 ：  2013-6-21
        //'**    版    本 ：  Version 1.1.1
        //'**    转载请不要删除以上信息
        //'****************************************************************************************

        [StructLayout(LayoutKind.Sequential)]
        public struct MajorColor : IComparable<MajorColor>
        {
            internal int Color;
            internal int Amount;
            public MajorColor(int Color, int Amount)
            {
                this.Color = Color;
                this.Amount = Amount;
            }
            public int CompareTo(MajorColor obj)
            {
                return this.Amount.CompareTo(obj.Amount);
            }
        }

        // http://www.coolphptools.com/color_extract
        // http://www.wookmark.com/image/268753/30-inspiring-examples-of-levitation-photography-inspirationfeed-com
        public static List<MajorColor> PrincipalColorAnalysis(Bitmap Bmp, int PCAAmount, int Delta = 24)
        {
            List<MajorColor> MC = new List<MajorColor>();

            int X, Y, Width, Height, Stride, Index, TotalColorAmount = 0;
            int HalfDelta;
            byte* Pointer, Scan0;
            BitmapData BmpData = Bmp.LockBits(new Rectangle(0, 0, Bmp.Width, Bmp.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
            Height = Bmp.Height; Width = Bmp.Width; Stride = BmpData.Stride; Scan0 = (byte*)BmpData.Scan0;

            int[] Table = new int[256 * 256 * 256];
            int[] NonZero = new int[Width * Height];
            int[] Map = new int[256];

            if (Delta > 2)
                HalfDelta = Delta / 2 - 1;
            else