TY - GENERIC DO - 10.20944/preprints202101.0345.v1 UR - http://dx.doi.org/10.20944/preprints202101.0345.v1 TI - Modified Crack Detection of Sewer Conduit with Low Resolution Images T2 - Preprints AU - Son, Byung Jik AU - Cho, Taejun PY - 2021 DA - 2021/01/18 PB - Preprints