i've now completed one year of my Ph.D and now i m lukng for algorithms to find eyes from an image with the help of the gradient(horizontal or vertical). I want to select the reqd upper region for the eyes with the help of gradient of the image. i m stuck in the problem of hw to find gradient of an image. can smebdy pls help me out with some logic or formula to find intensity and gradient of an image . Thanks.

can anybody pls help me on finding a topic or giving any idea on eye gaze estimation or detection for disable people on human computer interaction.

yes i m in the course work of PhD and I wnt 2 do some research on image analysis or image detection or image searching with some kind of model or algos.Pls hlp.

i've started my course work and want to do research work in the domain of digital image processing.trying 2 find out some topic for the synopsis with a combination of some technical and theoretical work.