CoreImage new filters in iOS6 (for MonoTouch)

SampleCode_iOS6.cs

using System;
using MonoTouch.CoreImage;
using MonoTouch.Foundation;
using MonoTouch.UIKit;

// CoreImage Filter Reference
//https://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CoreImageFilterReference/Reference/reference.html

namespace CoreImage
{
	/// <summary>
	/// This class contains the code shown in the article 
	/// </summary>
	public class SampleCode_iOS6
	{
		/// <summary>
		/// Example using a filter to add bloom to an image 
		/// </summary>
		public static void Bloom(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);

			var bloom = CIFilter.FromName ("CIBloom");
			bloom [CIFilterInputKey.Image] = ciimage;
			bloom [new NSString ("inputRadius")] = new NSNumber(10);
			bloom [new NSString ("inputIntensity")] = new NSNumber(3);
			var output = bloom.OutputImage;

			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);

			imgview.Image = ui;
		}

		/// <summary>
		/// Example using a filter to invert the color of an image 
		/// </summary>
		public static void ColorInvert(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);
			
			var colorInvert = CIFilter.FromName ("CIColorInvert");
			colorInvert [CIFilterInputKey.Image] = ciimage;
			var output = colorInvert.OutputImage;
			
			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);
			
			imgview.Image = ui;
		}
		/// <summary>
		/// Example using a filter  
		/// </summary>
		public static void ColorPosterize(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);
			
			var colorMonochrome = CIFilter.FromName ("CIColorPosterize");
			colorMonochrome [CIFilterInputKey.Image] = ciimage;
			colorMonochrome [new NSString ("inputLevels")] = new NSNumber(6);
			var output = colorMonochrome.OutputImage;
			
			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);
			
			imgview.Image = ui;
		}
		/// <summary>
		/// Example using a filter  
		/// </summary>
		public static void PerspectiveTransform(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);

			var prespectiveTransform = CIFilter.FromName ("CIPerspectiveTransform");
			prespectiveTransform [CIFilterInputKey.Image] = ciimage;
			prespectiveTransform [new NSString ("inputBottomLeft")] = new CIVector(20, 20);
			prespectiveTransform [new NSString ("inputBottomRight")] = new CIVector(480, 33);
			prespectiveTransform [new NSString ("inputTopRight")] = new CIVector(490, 490);
			prespectiveTransform [new NSString ("inputTopLeft")] = new CIVector(30, 400);
			var output = prespectiveTransform.OutputImage;
			
			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);
			
			imgview.Image = ui;
		}
		/// <summary>
		/// Example using a filter  
		/// </summary>
		public static void VortexDistortion(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);
			
			var lightTunnel = CIFilter.FromName ("CIVortexDistortion");
			lightTunnel [CIFilterInputKey.Image] = ciimage;
			lightTunnel [new NSString ("inputCenter")] = new CIVector(300, 400);
			lightTunnel [new NSString ("inputAngle")] = new NSNumber(55);
			lightTunnel [new NSString ("inputRadius")] = new NSNumber(400);
			var output = lightTunnel.OutputImage;

			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);
			
			imgview.Image = ui;
		}
		/// <summary>
		/// Example using a filter  
		/// </summary>
		public static void Sharpen(UITextView display, UIImageView imgview)
		{	
			var uiimage = UIImage.FromFile ("photo.JPG");
			var ciimage = new CIImage (uiimage);
			
			var prespectiveTransform = CIFilter.FromName ("CISharpenLuminance");
			prespectiveTransform [CIFilterInputKey.Image] = ciimage;
			prespectiveTransform [new NSString ("inputSharpness")] = new NSNumber(0.40);
			var output = prespectiveTransform.OutputImage;
			
			var context = CIContext.FromOptions(null);
			var cgimage = context.CreateCGImage (output, output.Extent);
			var ui = UIImage.FromImage (cgimage);
			
			imgview.Image = ui;
		}
	}
}