Considering the shortage of salient edge information for existing image abstraction methods

we present a salient edge guided approach based on energy optimization. For an input image

we first construct a salient edge map by a proposed edge information passing scheme which can effectively reduce the discontinuity of long edges. Then

in order to accentuate the details of the salient edges while suppressing the tangle-some details

we build an expected image gradient field in terms of the salient edge map. Finally

constrained by the image color information and the expected gradient field

we get the rendering result by minimizing a devised energy function. The experiment results show that our method has obvious advantage in the preservation of the edge coherence.