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<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/ilwxppn4d5hizekyd3ndvy2mii" style="color: black;">2013 IEEE Conference on Computer Vision and Pattern Recognition</a>
Detecting faces in uncontrolled environments continues to be a challenge to traditional face detection methods  due to the large variation in facial appearances, as well as occlusion and clutter. In order to overcome these challenges, we present a novel and robust exemplarbased face detector that integrates image retrieval and discriminative learning. A large database of faces with bounding rectangles and facial landmark locations is collected, and simple discriminative classifiers are<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/cvpr.2013.444">doi:10.1109/cvpr.2013.444</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/cvpr/ShenLBW13.html">dblp:conf/cvpr/ShenLBW13</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/a2xibqmhfvbs5jbkionf27yt5m">fatcat:a2xibqmhfvbs5jbkionf27yt5m</a> </span>
more »... ed from each of them. A voting-based method is then proposed to let these classifiers cast votes on the test image through an efficient image retrieval technique. As a result, faces can be very efficiently detected by selecting the modes from the voting maps, without resorting to exhaustive sliding window-style scanning. Moreover, due to the exemplar-based framework, our approach can detect faces under challenging conditions without explicitly modeling their variations. Evaluation on two public benchmark datasets shows that our new face detection approach is accurate and efficient, and achieves the state-of-the-art performance. We further propose to use image retrieval for face validation (in order to remove false positives) and for face alignment/landmark localization. The same methodology can also be easily generalized to other facerelated tasks, such as attribute recognition, as well as general object detection.
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