| 摘要 |
PROBLEM TO BE SOLVED: To provide an environment recognizing device and recognition method capable of effectively avoiding the interferences with other devices, while using a camera of normal sensitivity. SOLUTION: This environment recognizing device is provided with an irradiation unit for emitting a light pattern to an object to be measured existing in an environmental space intermittently in accordance with the duty factorτ/T of a pulse sequence of specifying one frame; the camera for outputting a differential image between an image, obtained photographed at an exposure when irradiation is made with a light pattern, and an image obtained photographed at an exposure when it is not irradiated; and a recognition means for recognizing the object to be measured, based on the differential image. The device is further provided with a timing controller for controlling the timing of emission of the light pattern, by changing at random the pulse repetition period T of the pulse sequence in the one frame. COPYRIGHT: (C)2008,JPO&INPIT
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