如何“最快”找出图象里颜色重复次数最大的点

怎么“最快”找出图象里颜色重复次数最大的点？

VB code

Private Declare Function GetTickCount Lib "kernel32" () As LongPrivate Type RGBQUAD    Blue As Byte    Green As Byte    Red As Byte    Reserved As ByteEnd TypePrivate lWidth&, lHeight&Private p() As RGBQUADPrivate Sub Command1_Click()    Dim v() As Long    Randomize        lWidth = 300: lHeight = 300    ReDim p(1 To lWidth, 1 To lHeight)        For j = 1 To lHeight        For i = 1 To lWidth            p(i, j).Red = Fix(Rnd * 256)            p(i, j).Blue = Fix(Rnd * 256)            p(i, j).Green = Fix(Rnd * 256)        Next    Next    '如何写？把数量最大，和数量第2，第3这3个点的颜色放进v()里就行了End Sub

不能用创立一个超大数组的办法，最效率的办法是什么？怎么写？

[解决办法]
计数的方法很多，例如数据库。建一个数据库表 points，字段为 Red(Byte), Blue(Byte), Green(Byte), Count(Long).

For j = 1 To lHeight
For i = 1 To lWidth
p(i, j).Red = Fix(Rnd * 256)
p(i, j).Blue = Fix(Rnd * 256)
p(i, j).Green = Fix(Rnd * 256)
Set rs = cn.Execute("SELECT * FROM pints WHERE Red =" & p(i, j).Red & " AND Blue = " & p(i, j).Blue & " AND Green=" & p(i, j).Green)
If rs.EOF Then
cn.Execute "INSERT points(Red, Blue, Green, Count) VALUES(" & p(i, j).Red & "," & p(i, j).Blue & "," & p(i, j).Green & ",1)"
Else 
cn.Execute "Update points SET Count = Count + 1 WHERE Red =" & p(i, j).Red & " AND Blue = " & p(i, j).Blue & " AND Green=" & p(i, j).Green 
End If
Next
Next

Set rs = cn.Execute("SELECT TOP 3 * FROM points ORDER BY Count DESC")