4 research outputs found
Fast Preprocessing for Robust Face Sketch Synthesis
Exemplar-based face sketch synthesis methods usually meet the challenging
problem that input photos are captured in different lighting conditions from
training photos. The critical step causing the failure is the search of similar
patch candidates for an input photo patch. Conventional illumination invariant
patch distances are adopted rather than directly relying on pixel intensity
difference, but they will fail when local contrast within a patch changes. In
this paper, we propose a fast preprocessing method named Bidirectional
Luminance Remapping (BLR), which interactively adjust the lighting of training
and input photos. Our method can be directly integrated into state-of-the-art
exemplar-based methods to improve their robustness with ignorable computational
cost.Comment: IJCAI 2017. Project page:
http://www.cs.cityu.edu.hk/~yibisong/ijcai17_sketch/index.htm