Visual spatial-context based wildfire smoke sensor

Sensors for early fire detection based on visual analysis have been under constant development and improvement, especially during the last decade. However, there is still a lot of room for advancement to increase the accuracy and reliability of such sensors. In this paper, a novel method for wildfire smoke detection based on spatial context analysis as well as motion detection, chromatic, texture and shape analysis is introduced. Several measures for evaluating quality of smoke detection are used, both on image and pixel scale. Smoke is a semi-transparent and amorphous phenomenon whose boundaries are hard to determine precisely; therefore, fuzzy measures are introduced for assessing the detection error. The proposed method is evaluated using the proposed measures and compared with two existing methods. The results show that the wildfire sensor based on proposed method is capable of detecting fire-smoke accurately and reliably, and in most detection aspects it outperforms the existing methods.

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