public class UIImage : Panel{
        public static readonly DependencyProperty SourceProperty =DependencyProperty.Register("Source", typeof(Uri), typeof(UIImage), new FrameworkPropertyMetadata(PropertyChangedCallback));
        public Uri Source {
            get { return GetValue(SourceProperty) as Uri; }
            set { SetValue(SourceProperty, value); }
        } 
    }

<nc:UIImage x:Name="BindImg" Height="166" Canvas.Left="1086" Canvas.Top="175" Width="156" Source="{Binding MyURI, Mode=OneWay}"/>

    public class VMMMMMMM : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private Uri uri;
        public Uri MyURI
        {
            get { return uri; }
            set { uri = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("MyURI")); }
        }
    }