726 research outputs found
Online Learning Algorithms for License Plate Detection and Recognition Based on Deformable Part Model
车牌是交通场景图像中十分重要的目标类,是交通领域智能视频分析的核心对象之一。良好图像质量的车牌检测与识别,已经有了较为成熟的实用算法;但针对各种复杂背景或松视角约束等成像条件下的车牌图像,如何提高并维持车牌检测与识别的性能指标仍然是个值得继续研究的问题。基于在线学习的目标检测与识别,是计算机视觉领域的重要研究方向之一。如何使车牌检测与识别算法在工作的过程中进行在线学习,逐步提升算法的性能指标,并适应成像环境的变化,也是个值得深入研究的课题。本文引入有监督或半监督的在线学习机制,使得车牌检测识别系统在使用过程中性能指标保持在较高的水平。本文还引入了一种近年来比较流行的基于可变部件模型的目标检测方...License plate is a very important target class in the traffic scene images. It is one of the core objects of intelligent video analysis in the transportation. There have been good and practical algorithms for license plate detection and recognition of high quality images, however, in the situation of complex background or loose constraints imaging modalities, how to improve and maintain the perfor...学位:工学硕士院系专业:信息科学与技术学院计算机科学系_计算机应用技术学号:2302009115274
THE PROPHYLACTIC USE OF THIO-TEPA AND UROKINASE IN TRANSITIONAL CELL, CARCINOMA OF THE BLADDER
The prevention of recurrences of bladder cancer was attempted in 80 patients (33 patients of our department and 47 patients of affiliated hospitals in the Hokuriku area) by means of the combined intravesical instillation of thio-TEPA and urokinase and in 28 patients of our department by the instillation of thio-TEPA alone. The recurrence rates of both therapies for the postoperative 36 months were 7.3 and 32.6 per cent in patients in our department, respectively, indicating a significant drop in the recurrence rate in the group subjected to the combined therapy. The recurrence rate of the group of 80 patients was 18.5 per cent. Leucopenia was found in 17 of 80 patients receiving the combined instillation therapy. However, this was not attributable to the use of urokinase. To clarify the mechanism involved in the action of urokinase in combined therapy, further physio-pathological and biochemical studies as well as long-term clinical follow-up studies are needed
Treatment of renal cell carcinoma extending into the right atrium with extra-corporeal circulation using high-grade hypothermia: a case report
68歳女.高度低体温・循環停止を用いて右腎細胞癌の心房内腫瘍塞栓摘出術を安全に施行した.この自験例から, 摘出後の復温に伴って大きな切開創から大量の出血がみられ, 充分な輸血の準備と手術後の注意深い循環動態の是正が重要であることを理解したA 68-year-old woman underwent surgical treatment for renal cell carcinoma associated with tumor thrombus extending into the right atrium. Although the tumor thrombus reached the level of the right atrium, there were no other apparent metastases. Combination therapy with interferon alfa plus tegafur/uracil (UFT) was attempted with the expectation of reducing the tumor thrombus, but there was no change. Successful management was achieved with right radical nephrectomy, right auriculotomy, and partial cavectomy using cardiopulmonary bypass under high-grade hypothermia. After removal of the tumor and thrombus, blood loss was 13, 900 ml during the patient's recovery. She had mild heart failure for about two weeks after the operation, but recovered. She was discharged on the 40th day after the operation. Proper preparation for blood transfusion is the key point of this operation
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