Flex app to mask images with feathering controls

I require a simple flex app that will take json data for a bezier curve and an image url and create a mask in the same of that bezier curve. Additionally, the app will need to be able to feather and increase the blur around the border of the masked area. here's a full description of how it should work: [login to view URL] The budget for this is $60 Please respond with a strategy on how you will implement this, be as detailed as possible on how you will increase or decrease the masking region. Applications that don't have a strategy will be treated as spam. Thanks for your time.