求二次线性插值算法原代码(高质量缩小图片也行)解决方法

求二次线性插值算法原代码(高质量缩小图片也行)
求二次线性插值算法原代码(高质量缩小图片也行)

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好专业哦　，帮你顶！
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不一定是这种算法，有其他的啊，数据题嘛

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
If Me.openFileDialog1.FileName = " " Then
MessageBox.Show( "请首先打开一个图像文件 ", "信息提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Sub
End If
If Me.saveFileDialog1.ShowDialog() = DialogResult.Cancel Then
MessageBox.Show( "请首先选择保存的JPG文件名 ", "信息提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Sub
End If
Try
Dim MyFileName As String = Me.saveFileDialog1.FileName + ".jpg "
Dim MyLevel As Integer = CInt(Me.TextBox1.Text)
Dim MyEncoders() As ImageCodecInfo = ImageCodecInfo.GetImageEncoders()
'获取JPEG格式的编码方式
Dim j As Int16 = 0
Dim MyImageCodecInfo As ImageCodecInfo
For j = 0 To MyEncoders.Length - 1 Step 1
If MyEncoders(j).MimeType = "image/jpeg " Then
MyImageCodecInfo = MyEncoders(j)
End If
Next
'设置JPEG文件的图片质量
Dim MyEncoder As Encoder = Encoder.Quality
'创建一个EncoderParameters对象，它仅包含一个 EncoderParameter对象
Dim MyEncoderParameters As New EncoderParameters(1)
'设置JPEG图片质量
Dim MyEncoderParameter As New EncoderParameter(MyEncoder, MyLevel)
MyEncoderParameters.Param(0) = MyEncoderParameter
Me.PictureBox1.Image.Save(MyFileName, MyImageCodecInfo, MyEncoderParameters)
MessageBox.Show( "另存为JPG图像格式文件操作成功！ ", "信息提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information)
Catch ex As Exception
MessageBox.Show( "另存为JPG图像格式文件操作失败，错误是： " + ex.Message, "信息提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information)
End Try
End Sub


参考
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缩放可否通过图片框的zoom实现啊？好像有这个功能啊
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顶的还不错
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hehe...
我来学习...
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图片缩小一般不会产生什么大的视觉上的损失吧，放大到是要注意