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Robots in hazardous robots use optical or acoustic sensors to sense the surrounding environment. In hazardous environment, there is no light source such as the sun and light is severely attenuated and scattered by fog, dust, and water. Therefore, optical sensors have limited views.
On the other hand, acoustic sensors are independent of visibility but have a limitation of low resolution and noise-to-signal ratio.
To recognize the surrounding environment robustly and perform precise mission in harsh condition, various artificial intelligence-based perception algorithms such as target object recognition, image enhancement, and opti-acoustic fusion are required.