1.ScaleTransform makes the attribute of zooming in or out of a picture establish a plane rectangular coordinate system with a point (CenterX,CenterY) as the origin, and then zooms in or out through scalexy
Here are examples and results

 <Image Source=" Images/2.PNG" Width="100" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="35,-86,285,42" Height="100" VerticalAlignment="Bottom"/>
 <Image Source=" Images/2.PNG"  Height="100"  Width="100"  VerticalAlignment="Top" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="170,-86,150,0">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <ScaleTransform ScaleX="0.5" ScaleY="0.5" CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <Image Source=" Images/2.PNG"  Height="56" Width="40"  VerticalAlignment="Top" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="30,-62,195,0" Grid.Column="1">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <ScaleTransform ScaleX="9" ScaleY="5" CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>

2.SkewTransform makes the image tilt attribute, establishes a plane rectangular coordinate system with a certain point (CenterX,CenterY) as the origin, and then realizes the effect of image tilt through the rotation angle of x, y axis (AngleX, AngleY)

 <Image Source=" Images/2.PNG" Width="100" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="35,-86,285,42" Height="100" VerticalAlignment="Bottom"/>
            <!--Picture button settings-->
            <Image Source=" Images/2.PNG"  Height="100"  Width="100"  VerticalAlignment="Top" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="215,-71,105,0">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <SkewTransform AngleX="0" AngleY="45" CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <Image Source=" Images/2.PNG"  Height="100" Width="100"  VerticalAlignment="Bottom" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="40,-61,125,17" Grid.Column="1">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <SkewTransform AngleX="45" AngleY="0" CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>

3.RotateTransform makes the rotation attribute of the picture rotate clockwise (Angle, in degrees) with a point (centerx, center) as the origin.

 <Image Source=" Images/2.PNG" Width="100" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="35,-86,285,42" Height="100" VerticalAlignment="Bottom"/>
            <!--Picture button settings-->
            <Image Source=" Images/2.PNG"  Height="100"  Width="100"  VerticalAlignment="Top" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="215,-71,105,0">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <RotateTransform Angle="60"  CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <Image Source=" Images/2.PNG"  Height="100" Width="100"  VerticalAlignment="Bottom" Stretch="Fill" Cursor="Hand" RenderTransformOrigin="0.5,0.5" Margin="40,-61,125,17" Grid.Column="1">
                <Image.RenderTransform>
                    <TransformGroup>
                        <!--with CenterX CenterY As the origin, then ScaleX ScaleY To zoom in or out-->
                        <RotateTransform Angle="45" CenterX="0" CenterY="0"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>

4.TranslateTransform translates the object in the coordinate system by the value of X Y.