如何使用vb.net组合直方图中的bin？

问题描述

我是贝拉。我想问一下如何使用vb.net将0-255bin的像素值组合成0-10 bin？有人可以纠正我的编码吗？这是正确的吗？

I'm Bella. Do I want to ask how to combine pixel value from 0-255bin into 0-10 bin using vb.net? can someone correct my coding? Is it correct?

        Dim HDr As Long() = New Long(255) {}
        Dim HDg As Long() = New Long(255) {}
        Dim HDb As Long() = New Long(255) {}

        GetHistogram(New Bitmap(PictureBox1.Image), HDr, HDg, HDb)

        'setup the chart
        With Chart1.ChartAreas(0)
            .AxisX.Title = "Pixel"
            .AxisX.MajorGrid.LineColor = Color.LightBlue
            .AxisX.Minimum = 0
            .AxisX.Interval = 1


            .AxisY.Title = "Frequency"
            .AxisY.MajorGrid.LineColor = Color.LightGray
            .AxisY.Minimum = 0
            .AxisY.Interval = 0.1


            .BackColor = Color.FloralWhite
            .BackSecondaryColor = Color.White
            .BackGradientStyle = GradientStyle.HorizontalCenter
            .BorderColor = Color.Blue
            .BorderDashStyle = ChartDashStyle.Solid
            .BorderWidth = 1
            .ShadowOffset = 2

            'draw the chart
            Chart1.Series.Clear()
            Chart1.Series.Add("Red")
            Chart1.Series("Red").ChartType = DataVisualization.Charting.SeriesChartType.Column
            Chart1.Series("Red").Color = Color.Red
            Chart1.Series("Red").IsVisibleInLegend = False

            For i As Integer = 0 To 9
                Chart1.Series("Red").Points.AddY(HDr(i) / 70000) --> Im not sure for this part.
            Next

        End With

    End Sub

谢谢。

问候，

Bella

推荐答案

什么是HDr？ 如果它是256个分档并且你想要创建10个分箱，则代码将类似于：

What is HDr?  If it is the 256 bins and you want to create 10 bins then the code would be something like:

Dim Bins10 As Integer（9）

Dim Bins10 As Integer(9)

For I As Integer = 0到255

  Bins10（CInt（I / 25.5））+ = HDr（I）

Next I

For I As Integer = 0 to 255
  Bins10(CInt(I / 25.5)) += HDr(I)
Next I

然后使用Bins10填充Y数据点。

Then use Bins10 to populate the Y data points.

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