Project not mentioned on the project ideas page

Hi, I am interested in image/signal processing and have a decent exposure to various image processing algorithms. I would love to participate in gsoc'14, however I am not sure if I can submit a proposal as the project I want to work on is not mentioned on the project ideas page. I would like to work on visual saliency<http://www.scholarpedia.org/article/Visual_salience>computation. As of now this module is not implemented in scikit-image. I would love to implement a bunch saliency algorithms for the proposed module. Please suggest if such a project is feasible, and whether I should go ahead with writing an elaborate proposal. Tabish.