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Advanced endoscopic imaging to improve adenoma detection 被引量:1
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作者 Helmut Neumann Andreas Ngel Andrea Buda 《World Journal of Gastrointestinal Endoscopy》 CAS 2015年第3期224-229,共6页
Advanced endoscopic imaging is revolutionizing our way on how to diagnose and treat colorectal lesions. Within recent years a variety of modern endoscopic imaging techniques was introduced to improve adenoma detection... Advanced endoscopic imaging is revolutionizing our way on how to diagnose and treat colorectal lesions. Within recent years a variety of modern endoscopic imaging techniques was introduced to improve adenoma detection rates. Those include high-definition imaging, dye-less chromoendoscopy techniques and novel, highly flexible endoscopes, some of themequipped with balloons or multiple lenses in order to improve adenoma detection rates. In this review we will focus on the newest developments in the field of colonoscopic imaging to improve adenoma detection rates. Described techniques include high-definition imaging, optical chromoendoscopy techniques, virtual chromoendoscopy techniques, the Third Eye Retroscope and other retroviewing devices, the G-EYE endoscope and the Full Spectrum Endoscopy-system. 展开更多
关键词 ADVANCED endoscopic IMAGING G-Eye Full Spectrum Endoscopy-system CHROMOENDOSCOPY I-scan Narrow band IMAGING Fujinon Intelligent colorenhancement 3rd Eye POLYPS COLORECTAL cancer
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多喷嘴对置式气化炉内撞击火焰高度研究 被引量:4
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作者 范普兴 龚岩 +2 位作者 张庆 郭庆华 于广锁 《中国电机工程学报》 EI CSCD 北大核心 2014年第17期2761-2768,共8页
基于多喷嘴对置式气流床气化热模实验平台,利用侧面高温内窥镜配合工业高速相机,对不同工况下的柴油撞击火焰高度及脉动频率进行了研究。提出了一种基于伪彩色增强的撞击火焰高度图像分割方法。利用工业高分辨率相机和顶部高温内窥镜的... 基于多喷嘴对置式气流床气化热模实验平台,利用侧面高温内窥镜配合工业高速相机,对不同工况下的柴油撞击火焰高度及脉动频率进行了研究。提出了一种基于伪彩色增强的撞击火焰高度图像分割方法。利用工业高分辨率相机和顶部高温内窥镜的组合对结果进行了验证。结果表明,在实验工况下,撞击火焰高度随氧碳比([O]/[C])的升高逐渐上升,但在氧碳比为1.8附近出现转折;提高柴油流量,火焰高度上升明显。氧碳比的升高和柴油流量的增加均使得火焰高度的脉动范围减小,撞击火焰稳定性增强。撞击火焰高度的脉动频率集中在低频区,其主要频率的特征峰保持在10 Hz以内,另外,在3 Hz附近存在一明显的特征峰。氧碳比的升高和柴油流量的增加均使得特征峰的幅值逐渐降低。 展开更多
关键词 多喷嘴对置 撞击火焰高度 火焰脉动频率 伪彩色增强 图像分割
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