Sk Planet Co., Ltd.

Yeonghyeon Park

Joonsung Lee

Jong Hee Jung

JongHee Jung

An anomaly detection method and apparatus are provided using an attention mechanism or based on an artificial neural network for minimizing computational cost. In an embodiment, the anomaly detection method may include entering, by a detection unit, input data into a detection network; generating, by the detection network, an attention map and output data through a plurality of operations in which a plurality of layer weights are applied to the input data; generating, by the detection unit, an attention map by overlapping the attention map with the input data when an attention region having an attention value greater than or equal to a predetermined threshold exists in the attention map; detecting, by the detection unit, whether the input data is normal or abnormal according to the output data; and outputting, by the detection unit, the detection map and an anomaly detection result indicating whether the input data is normal or abnormal.

Apparatus and method for anomaly detection

Deriving a dangerous area of a road based on a vehicle's noise generated on the road or analyzing a road surface condition based on a driving noise for each vehicle type. An audio signal is collected by a sensor device and send to a noise processing unit. The noise processing unit generates an attenuated audio signal by attenuating a noise other than a noise-of-interest including at least one of a vehicle horn noise and a vehicle sudden brake noise in the received audio signal. An information processing unit detects the noise-of-interest by analyzing the attenuated audio signal through a learned detection model, and establishes a road area within a predetermined radius from the sensor device as the dangerous area of the road based on an accumulated number of times the noise-of-interest is detected.

Apparatus and method for analyzing road surface condition based on vehicle noise

The present invention relates to: an apparatus and system for detecting a road surface condition, wherein the road surface condition is determined through a sound signal; and a method for detecting a road surface condition by using same. The apparatus for detecting a road surface condition according to the present invention comprises: a sensor unit which is installed on a road and measures a sound signal generated according to a moving of a moving object on the road; and a control unit which distinguishes the sound signal measured by the sensor unit into normality or abnormality and determines, in case of the abnormality, the road surface condition including at least one of rainfall (wet), frozenness (icy), slush, and snow cover (snowy) so that a quick and accurate action corresponding to the road surface condition of a specific section can be made from a distanced place.

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Cheonan-si, South Korea

Yeonghyeon Park