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Real-Time Cattle Action Recognition for Estrus Detection
( Eui-ju Heo ),( Sung-jin Ahn ),( Kang-sun Choi ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.4
In this paper, we present a real-time cattle action recognition algorithm to detect the estrus phase of cattle from a live video stream. In order to classify cattle movement, specifically, to detect the mounting action, the most observable sign of the estrus phase, a simple yet effective feature description exploiting motion history images (MHI) is designed. By learning the proposed features using the support vector machine framework, various representative cattle actions, such as mounting, walking, tail wagging, and foot stamping, can be recognized robustly in complex scenes. Thanks to low complexity of the proposed action recognition algorithm, multiple cattle in three enclosures can be monitored simultaneously using a single fisheye camera. Through extensive experiments with real video streams, we confirmed that the proposed algorithm outperforms a conventional human action recognition algorithm by 18% in terms of recognition accuracy even with much smaller dimensional feature description.
Relief Extraction from Stone Monuments
Eui-Ju Heo,Jae-Min Sa,Kang-Sun Choi 대한전자공학회 2018 IEIE Transactions on Smart Processing & Computing Vol.7 No.4
In this paper, we propose a method to extract reliefs inscribed on stone monuments by analyzing 3-D scan data. Since a relief (carving) is canal-shaped, the curvature-based Frangi filter that has been used in blood vessel detection is suitable for relief extraction. The curvature-based Frangi filter evaluates how well a local surface forms a canal-like curve using principal curvatures. However, for rough surfaces on old and weathered stone monuments, estimated curvatures tend to be noisy, and thus, relief extraction results are degraded. In the proposed relief extraction method, after an initial relief candidate search using curvature-based vesselness estimation, we evaluate the reliability of each relief candidate. Then, for each relief candidate, its vesselness is weighted by the corresponding reliability. As a result, false positives caused by dents and scratches in the relief candidates are successfully alleviated. We confirm that the proposed method extracts reliefs clearly (even from uneven, rough surfaces) and outperforms the conventional curvature-based Frangi filtering method.
Heo Jinbeom,Lee Jinyoung,Nam Yun Ji,Kim YongHwan,Yun HongDuck,Lee Seungun,Ju Hyein,Ryu Chae-Min,Jeong Seon Min,Lee Jinwon,Lim Jisun,Cho Yong Mee,Jeong Eui Man,Hong Bumsik,Son Jaekyoung,Shin Dong-Myung 생화학분자생물학회 2022 Experimental and molecular medicine Vol.54 No.-
Aberrant activation of embryogenesis-related molecular programs in urothelial bladder cancer (BC) is associated with stemness features related to oncogenic dedifferentiation and tumor metastasis. Recently, we reported that overexpression of transcription factor CP2-like protein-1 (TFCP2L1) and its phosphorylation at Thr177 by cyclin-dependent kinase-1 (CDK1) play key roles in regulating bladder carcinogenesis. However, the clinical relevance and therapeutic potential of this novel CDK1-TFCP2L1 molecular network remain elusive. Here, we demonstrated that inhibitor of DNA binding-2 (ID2) functions as a crucial mediator by acting as a direct repressive target of TFCP2L1 to modulate the stemness features and survival of BC cells. Low ID2 and high CDK1 expression were significantly associated with unfavorable clinical characteristics. TFCP2L1 downregulated ID2 by directly binding to its promoter region. Consistent with these findings, ectopic expression of ID2 or treatment with apigenin, a chemical activator of ID2, triggered apoptosis and impaired the proliferation, suppressed the stemness features, and reduced the invasive capacity of BC cells. Combination treatment with the specific CDK1 inhibitor RO-3306 and apigenin significantly suppressed tumor growth in an orthotopic BC xenograft animal model. This study demonstrates the biological role and clinical utility of ID2 as a direct target of the CDK1-TFCP2L1 pathway for modulating the stemness features of BC cells.