The total variation model with L^1 norm fidelity term (TVL^1) has been proposed to serve as an effective cartoontexture image decomposition tool because of its unique scale-dependent decomposition ability. Nevertheless, one of its largely overlooked limitations is its inability to perfectly retain the original contours of the selected patterns when the fidelity term is not sufficiently weighted. In this paper, we propose a boundary correction method to refine the contours of extracted patterns under such circumstances. A scale-driven image segmentation algorithm extended from the boundary correction method is presented as an application. Experimental results demonstrate that our works overcome the drawbacks of existing TV-L^1 model and provide an alternative segmentation method.