Electronic endoscope system and method for controlling the same

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	Electronic endoscope system and method for controlling the same
其他题名	Electronic endoscope system and method for controlling the same
	YAMAGUCHI, HIROSHI; SAITO, TAKAAKI; IIDA, TAKAYUKI
	2012-10-17
专利权人	FUJIFILM CORPORATION
公开日期	2012-10-17
授权国家	欧洲专利局
专利类型	发明申请
摘要	A light source device (12) of an electronic endoscope system (2) has first and second semiconductor lasers (55, 56). In a vascular observation mode, one of the semiconductor lasers is used in a full light state (100% rated output) while the other is used in a reduced light state (for example, 10% rated output). First and second images of an internal body portion are captured with a color imaging device (33) under illumination of two patterns, respectively. Correlation operation of pixel values of three colors is performed between the two images. Noise components, caused by the first or second semiconductor lasers in the light reduced state, are removed from the first and second images. An oxygen saturation level of blood in a blood vessel is calculated using the first and second images with the noise components removed.
其他摘要	电子内窥镜系统（2）的光源装置（12）具有第一和第二半导体激光器（55,56）。在血管观察模式中，半导体激光器之一用于全光状态（100％额定输出），而另一半用于减光状态（例如，10％额定输出）。在两个图案的照射下，用彩色成像装置（33）捕获内部身体部分的第一和第二图像。在两个图像之间执行三种颜色的像素值的相关操作。由第一或第二半导体激光器在减光状态下引起的噪声分量从第一和第二图像中去除。使用去除了噪声成分的第一和第二图像计算血管中血液的氧饱和度。
主权项	An electronic endoscope system (2) comprising: at least first and second light source systems (55, 56, 64) for illuminating an internal body portion including a blood vessel, the first light source system generating first illumination light including first narrowband light, the second light source system generating second illumination light including second narrowband light, the first light source system having a first semiconductor light source (55); a color imaging device (33) for imaging the internal body portion illuminated with the first or second illumination light, the color imaging device having pixels of two or more colors, electric charge accumulated in each pixel being read out periodically as a pixel value; a controller (66) for controlling the first and second light source systems such that the first and second illumination light is applied alternately to the internal body portion in a vascular observation mode, the controller putting the first semiconductor light source of the first light source system into a reduced light state without turning off the first semiconductor light source during the application of the second illumination light; a noise removal section (70) for removing a noise component from the pixel value, used for imaging of vascular information of the internal body portion, with a use of correlation operation of the pixel values of the two or more colors, to calculate a corrected pixel value, the noise component being caused by illumination of the first semiconductor light source in the reduced light state; an image production section (73) for producing a vascular information image based on the corrected pixel value; and a display section (18) for displaying the vascular information image.
申请日期	2012-04-13
专利号	EP2510868A1
专利状态	授权
申请号	EP2012164025
公开（公告）号	EP2510868A1
IPC 分类号	A61B1/045 \| A61B1/06 \| A61B1/00
专利代理人	-
代理机构	KLUNKER . SCHMITT-NILSON . HIRSCH
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/58772
专题	半导体激光器专利数据库
作者单位	FUJIFILM CORPORATION
推荐引用方式 GB/T 7714	YAMAGUCHI, HIROSHI,SAITO, TAKAAKI,IIDA, TAKAYUKI. Electronic endoscope system and method for controlling the same. EP2510868A1[P]. 2012-10-17.