The paper describes an eye-controlled painting system which enables people with severe mobility impairments to draw just by moving their eyes.We design and implement the system

and also propose some algorithms to improve the performance of eye-tracking interaction.We present a time-domain constrained eye-tracking clustering algorithm to detect fixations

and then identify eye movement behaviors

which can reduce the "Midas touch" problem.We also present a window-adaptive discrete Gaussian smoothing algorithm

which can filter noise and smooth the path of eye-movement in a reasonable way.