Title :
Road surface recognition sensor using an optical spatial filter
Author :
Yoda, Shigeru ; Okabe, Hirosh ; Takag, Junichi ; Yamashita, Tsukasa
Author_Institution :
Central R&D Lab., Omron Corp., Kyoto, Japan
Abstract :
A road surface recognition sensor has been realized by using an optical spatial filter. The sensor transforms a road surface image into spatial frequency spectra. Frequency distribution depends on the road surface type. Ground velocity is shown by a filtered moving image. Experimental results show that five road surface types were recognized in cold districts. Both road surface condition and vehicle velocity can be detected by a noncontact sensor; therefore, the sensor is useful for active safety systems
Keywords :
driver information systems; image recognition; image sensors; road traffic; safety systems; spatial filters; traffic control; velocimeters; active safety systems; frequency distribution; optical spatial filter; road surface image; road surface recognition sensor; spatial frequency spectra; vehicle velocity; Frequency; Image sensors; Optical filters; Optical sensors; Road safety; Road vehicles; Sensor systems; Spatial filters; Vehicle detection; Vehicle safety;
Conference_Titel :
Intelligent Vehicles '95 Symposium., Proceedings of the
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2983-X
DOI :
10.1109/IVS.1995.528289
