VGetExtrema 方法

描述
检索 blob 对象的极坐标。

语法
Sub VGetExtrema (Sequence As String, Object As String, Result As Integer, ByRef MinX As Single, ByRef MaxX As Single, ByRef MinY As Single, ByRef MaxY As Single)

参数

• Sequence
  含有当前项目中视觉序列名称的字符串表达式。
• Object
  含有序列 Sequence 中对象名称的字符串表达式。
• Result
  表示结果编号的整数表达式。
• MinX
  将包含以像素为单位的最小 x 坐标的实数变量。
• MaxX
  将包含以像素为单位的最大 x 坐标的实数变量。
• MinY
  将包含以像素为单位的最小 y 坐标的实数变量。
• MaxY
  将包含以像素为单位的最大 y 坐标的实数变量。

参阅
VGet 方法

VGetExtrema 示例
VB 例:

Dim xmin As Single, xmax As Single  
Dim ymin As Single, ymax As Single  
Dim seq As String, blob As String  
  
seq = "testSeq"  
blob = "blob01"  
m_spel.VRun(seq)  
m_spel.VGet(seq, blob, "found", found)  
If found <> 0 Then  
    m_spel.VGetExtrema(seq, blob, xmin, xmax, ymin, ymax)  
End If  

C# 例：

float xMin, xMax, yMin, yMax;  
bool found;  
string seq, blob;  
  
seq = "testSeq";  
blob = "blob01";  
m_spel.VRun(seq);  
m_spel.VGet(seq, blob, "found", found);  
  
if(found == true)  
    m_spel.VGetExtrema(seq, blob,out xMin,out xMax,out yMin,  
        out yMax);