照明条件に依存しない手法に基づいた侵入物検出システムのネットワークカメラによる構築

特別企画「学生ポスターセッション

ネットワークカメラを用いた侵入物検出システムの開発

平成18年度電気・情報関連学会中国支部第57回連合大会資料 岡山理科大学, 岡山 (2006 10

ネットワークカメラによる侵入物検出システムの運用における問題の検討

危険区域や重要施設の侵入監視や不審物の検出を行うシステムは,犯罪や事故を未然に防止するためには重要なものである. 画像処理により侵入者を検出処理するシステムの一つとして,我々は複数枚の静止画像を用いるイメージベースドレンダリングを応用した侵入物検出手法システムを提案している.本稿では,イメージベースドレンダリングを応用した侵入物検出処理を行うシステムを複数台のネットワークカメラを用いて構築・運用する際の問題として,カメラ画像の転送用に確保すべきネットワーク帯域,カメラと計算機間の距離を考慮したシステムの処理時間について検討する

照明条件に依存しない手法に基づいた侵入物検出システムのネットワークカメラによる構築

2007年電子情報通信学会総合大会 情報システムソサイエティ特別企画「学生ポスターセッション」, ポスター ; 開催場所 : 名城大学, 名古屋 ; 開催日 : 2007年3月21-23

Moving object detection independent to lighting condition and system construction with network cameras

本研究は,照明条件に依存しない侵入物検出システムの開発を目的としている.本稿では,本システムで採用したイメージベースドレンダリングを応用した侵入検出手法と現在までに構築したシステムの概要を示し,誤検出を低減するためにキャリブレーションを応用したカメラ位置,方向の算出手法の説明とその検討,システムが実用的であるか検討するために行ったカメラ間の撮影時刻差の測定,侵入物検出処理にかかる時間の測定について述べる.This research has aimed at the development of the background subtraction system that doesn't depend on the lighting condition. In this paper, the outline of the system that will construct it by the invasion detection technique and present when Imagebasdorendaring adopted with this system was applied is shown

Moving object detection independent to lighting condition and system construction with network cameras

MIRU2007 第10回 画像の認識・理解シンポジウム ポスター資料 ; 開催日時:2007年7月30日～8月1

Experimental gold nephropathy in guinea pigs: Detection of autoantibodies to renal tubular antigens

Experimental gold nephropathy in guinea pigs: Detection of autoantibodies to renal tubular antigens. Renal tubular dysfunction was induced in Hartley guinea pigs by injection of sodium aurothiomalate (gold) as manifested by excretion of tubular basement membrane (TBM) antigen and renal tubular epithelial (RTE) antigen in urine and tubular proteinuria. Following the tubular dysfunction, autoimmune tubulointerstitial nephritis (TIN) and/or immune complex nephropathy (ICN) developed in a large proportion of animals. TIN was associated with anti-TBM antibodies, and the histological features were characterized by tubular lesions with interstitial mononuclear cell infiltration, destruction of tubules, and interstitial fibrosis. In ICN, the glomerular lesions consisted of partial thickening of capillary walls and mesangial cellularity, and granular immune deposits were seen in the mesangial area and on capillary walls. Furthermore, electron-dense deposits were demonstrated in the mesangial area and in the glomerular basement membrane (GBM) by electron microscopy. Anti-RTE antibodies were detected in the sera and eluates from the kidney of animals with ICN. RTE antigens were also detected in the glomerular deposits by indirect immunofluorescence using anti-guinea pig RTE antibody. These results suggest that TBM and RTE antigens released from renal tubules damaged by a direct toxic action of gold may lead to antibody formation against these antigens and induce TIN and/or ICN

UV-Induced Ubiquitylation of XPC Protein Mediated by UV-DDB-Ubiquitin Ligase Complex

SummaryThe xeroderma pigmentosum group C (XPC) protein complex plays a key role in recognizing DNA damage throughout the genome for mammalian nucleotide excision repair (NER). Ultraviolet light (UV)-damaged DNA binding protein (UV-DDB) is another complex that appears to be involved in the recognition of NER-inducing damage, although the precise role it plays and its relationship to XPC remain to be elucidated. Here we show that XPC undergoes reversible ubiquitylation upon UV irradiation of cells and that this depends on the presence of functional UV-DDB activity. XPC and UV-DDB were demonstrated to interact physically, and both are polyubiquitylated by the recombinant UV-DDB-ubiquitin ligase complex. The polyubiquitylation altered the DNA binding properties of XPC and UV-DDB and appeared to be required for cell-free NER of UV-induced (6-4) photoproducts specifically when UV-DDB was bound to the lesion. Our results strongly suggest that ubiquitylation plays a critical role in the transfer of the UV-induced lesion from UV-DDB to XPC

Observation of the Pharynx to the Cervical Esophagus Using Transnasal Endoscopy with Blue Laser Imaging

Background In 2014, the new transnasal endoscopy with Blue laser Imaging (BLI) has been developed. Aim We present the usefulness of the observation of from the pharynx to the cervical esophagus using transnasal endoscopy with BLI. Patients and Methods This study was conducted between June 2014 and October 2014. During this period, 70 consecutive patients (60 men, 10 women; mean age 67.9 years old) with esophageal or head and neck cancer underwent endoscopic screening at the oropharynx and hypopharynx by transnasal endoscopy with BLI system We performed this endoscopic observation from oral cavity to pharynx before inserting into the cervical esophagus.The visibility of subsites of the hypopharynx and the orifice of the esophagus was evaluated. The extent of the view of hypopharyngeal opening was classified into 3 categories (excellent, good, poor). Then, the diagnostic accuracy of transnasal endoscopy with BLI system was estimated. Our screening is as follows. First, the patient is asked to bow their head deeply in the left lateral position. We put a hand on the back of the patient’s head and push it forward. The patient is then asked to lift the chin as far as possible. In order to inspect the oral cavity, we insert an endoscope without a mouthpiece. After observation of the oral cavity, the endoscope was inserted through the nose. When the tip of the endoscope reached caudal to the uvula, the patient opened his mouth wide, stuck his tongue forward as much as possible and made a vocal sound like “ayyy”. The endoscopist caused the endoscope to U-turn and observed the oropharynx, in particular the radix linguae (Intra-oropharyngeal U-turn method). For examination of the hypopharynx and the orifice of the esophagus, the patient is asked to blow hard and puff their cheeks while the mouth remains closed (Trumpet maneuver). Results 8 elderly cases were excluded because they could not perform the adequate ballooning. Finally, 62 cases were investigated. The ballooning the pyriform sinus and posterior wall not only allows accurate assessment of the stretched pharyngeal mucosa but also gives a view of postcricoid subsite and the orifice of the esophagus. The wide endoscopic view of the pharynx was obtained in a series of the procedures (excellent=53/62, 85.4%; good=7/52, 4.5%; and poor=2/62, 7.6%). Among 70 patients, 6 superficial lesions (8.6%) at the oropharynx(n=1) and hypopharynx (n=5) were discovered with BLI system. Mucosal redness, a pale thickened mucosa, white deposits or loss of a normal vascular pattern, well demarcated areas covered with scattered dots are important characteristics to diagnose superficial carcinoma. Conclusion The more progress achieved in transnasal endoscopy rapidly in the last few years, it can improve for observing the blind area using trans-oral endoscopy, therefore the trans-nasal endoscope will be a standard tool for the screening of the upper gastrointestinal tract in the near future

Dysregulation of RNF213 promotes cerebral hypoperfusion

RNF213 is a susceptibility gene for moyamoya disease, yet its exact functions remain unclear. To evaluate the role of RNF213 in adaptation of cerebral blood flow (CBF) under cerebral hypoperfusion, we performed bilateral common carotid artery stenosis surgery using external microcoils on Rnf213 knockout (KO) and vascular endothelial cell-specific Rnf213 mutant (human p.R4810K orthologue) transgenic (EC-Tg) mice. Temporal CBF changes were measured by arterial spin-labelling magnetic resonance imaging. In the cortical area, no significant difference in CBF was found before surgery between the genotypes. Three of eight (37.5%) KO mice died after surgery but all wild-type and EC-Tg mice survived hypoperfusion. KO mice had a significantly more severe reduction in CBF on day 7 than wild-type mice (KO, 29.7% of baseline level; wild-type, 49.3%; p = 0.038), while CBF restoration on day 28 was significantly impaired in both KO (50.0%) and EC-Tg (56.1%) mice compared with wild-type mice (69.5%; p = 0.031 and 0.037, respectively). Changes in the subcortical area also showed the same tendency as the cortical area. Additionally, histological analysis demonstrated that angiogenesis was impaired in both EC-Tg and KO mice. These results are indicative of the essential role of RNF213 in the maintenance of CBF