Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...

Abstract: Nowadays the smart house is necessarily useful part of home comfort. Many people can't imagine their lives without smart devices. A lot of companies provide solutions in this field, for ...

Abstract: As a core robotic and vision problem, camera and range sensor calibration have been researched intensely over the last decades. However, robotic research efforts still often get heavily ...