专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明申请

US20140049767A1 METHODS AND SYSTEMS FOR GEOMETRIC PHASE UNWRAPPING IN TIME OF FLIGHT SYSTEMS 审中-公开
标题翻译：在飞行系统时间内几何相位的方法和系统
公开(公告)号：US20140049767A1
公开(公告)日：2014-02-20
申请号：US13586391
申请日：2012-08-15
申请人： Arrigo Benedetti , Travis Perry , Mike Fenton , Vishali Mogallapu
发明人： Arrigo Benedetti , Travis Perry , Mike Fenton , Vishali Mogallapu
IPC分类号： G01C3/08
CPC分类号： G01S17/36 , G01S17/89
摘要： A phase-based TOF system is operated with N≧3 modulation frequencies fi. These frequencies can be changed during N time intervals that together define an exposure time for the TOF pixel array. Preferably N=3 and modulation frequencies f1, f2, f3 are used, where f1=αm1, f2=αm2, and f3=αm3, where m1, m2, and m3 are small integers co-prime to each other, and a is a coefficent. A first phase image is acquired during perhaps the first third of exposure time using f1, then for the next third of exposure time a second phase image is acquired using f2, and then f3 is used to acquire a third phase image during the last third of exposure time. Geometric analysis yields desired values for m1, m2, and m3 to unwrap and thus disambiguate phase. Identification of valid and invalid data is identified using dynamically adjustable error tolerances.
摘要翻译：基于相位的TOF系统以N> = 3调制频率fi运行。这些频率可以在N个时间间隔期间改变，这些时间间隔共同定义了TOF像素阵列的曝光时间。优选N = 3，并且使用调制频率f1，f2，f3，其中f1 = alpham1，f2 = alpham2和f3 = alpham3，其中m1，m2和m3是彼此共同的小整数，a是系数在使用f1的曝光时间的第一三分之一期间获取第一相位图像，然后在曝光时间的下一个三分之一中，使用f2获取第二相位图像，然后使用f3来获取第三相位图像的最后三分之一曝光时间。几何分析产生m1，m2和m3的期望值以展开并因此消除相位差。使用动态可调的误差公差识别有效和无效的数据。

IPRDB

热门服务

关于我们

友情链接

联系方式