Improved De-noising Algorithm on Heat Equation
Lixia Chen · 2009
The heat equation has equal diffusions both in the gradient and the tangent direction, which can strongly smooth the important character of the image while de-noising. In order to better preserve the characteristic of an image, we must take different diffusions in different regions; therefore a weight function is used to induce diffusion in the gradient direction. The experimental results show improvements of the proposed model.