FZ_FormBase.GetHistgram

Gets the histogram data within the rectangle of the image

Public Shared Function GetHistgram( _
    ByVal unitNo As Integer, _
    ByVal imageNo As Integer, _
    ByVal imageChannel As Integer, _
    ByVal rectangle As System.Drawing.Rectangle, _
    ByRef histgram() As Integer _
) As Integer

Parameters

unitNo	Unit-number of processing item related to image input and image conversion	Input
imageNo	Image number	Input
imageChannel	Image channel number for RGB color image (R:0, G:1 and B:2). Ignored for black and white image.	Input
rectangle	Targeted rectangular area.	Input
histgram	Array to store frequency data. When the function is executed, it is resized.	Output

Return Value

Returns 0 when moving a processing unit succeeded.

Otherwise returns a non-zero value.

Description

Gets the histogram data within the rectangle of the image.

Example

    Private Sub DisplayUpdate(ByVal sender As Object, ByVal e As System.EventArgs)

        ' Gets the histogram data within the rectangle of the image.
        unitNo = 0
        imageNo = 0
        color = 0
        rect.X = 100 : rect.Y = 100 : rect.Width = 200 : rect.Height = 200
        GetHistgram(unitNo, imageNo, color, rect, histgram)

   End Sub