何恺明课题组目标检测最近工作《R-FCN: Object Detection via Region-based Fully Convolutional Networks》:
We present region-based, fully convolutional networks for accurate and efficient object detection. In contrast to previous region-based detectors such as Fast/Faster R-CNN that apply a costly per-region subnetwork hundreds of times, our region-based detector is fully convolutional with almost all computation shared on the entire image. To achieve this goal, we propose position-sensitive score maps to address a dilemma between translation-invariance in image classification and translation-variance in object detection. Our method can thus naturally adopt fully convolutional image classifier backbones, such as the latest Residual Networks (ResNets), for object detection. We show competitive results on the PASCAL VOC datasets (e.g., 83.6% mAP on the 2007 set) with the 101-layer ResNet. Meanwhile, our result is achieved at a test-time speed of 170ms per image, 2.5-20x faster than the Faster R-CNN counterpart.
论文链接:
https://arxiv.org/abs/1605.06409
代码链接:
https://github.com/daijifeng001/r-fcn
原文链接:
http://weibo.com/5501429448/E2rppq970?from=page_1005055501429448_profile&wvr=6&mod=weibotime&type=comment#_rnd1470568573930
提出了一种基于区域的全卷积网络R-FCN,该方法通过位置敏感得分图解决物体检测中的平移变化问题,并能高效准确地进行检测。在PASCAL VOC数据集上实现了83.6% mAP的精度,测试速度达到170ms每张图片。

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