Stealth vision for protecting privacy
Stealth vision for protecting privacy
复制标题
DOI：
10.1109/icpr.2004.1333788
复制
发表时间：
2004-08
期刊：
影响因子：
--
通讯作者：
I. Kitahara;K. Kogure;N. Hagita
中科院分区：
文献类型：
--
作者：
I. Kitahara;K. Kogure;N. Hagita
我们提出了一个匿名的视频捕获系统，称为“隐形视觉”，它保护隐私的对象淡出他们的外观。为了避免在用移动的相机捕获的图像中检测人脸区域（隐私保护区域）的困难，在3D（三维）空间而不是2D图像空间中确定淡出区域。用一种简单的算法估计被捕获对象的3D位置，该算法将俯视图像中的前景区域投影到几个水平3D平面上，并在合并投影结果的同时提取3D位置。通过将3D信息投影到移动的相机的图像平面上，确定用于匿名化过程的区域。实验结果表明，该系统成功地保护了目标对象的隐私。
We propose an anonymous video capturing system, called "stealth vision", which protects the privacy of objects by fading out their appearance. In order to avoid difficulty in detecting the region of human faces (privacy-protected regions) in an image captured with a mobile camera, the fade-out areas are determined in 3D (three-dimensional) space instead of 2D image space. The 3D position of the captured object is estimated with a simple algorithm, which projects the foreground region in the overhead image onto several horizontal 3D planes and extracts the 3D position while merging the projecting results. By projecting the 3D information onto an image plane of mobile camera, the region to use for the anonymizing process is determined. Experimental results show that our system successfully protects the privacy of target objects.