公开(公告)号：US20030076412A1

公开(公告)日：2003-04-24

申请号：US10274998

申请日：2002-10-22

Applicant: PENTAX CORPORATION

Inventor： Ryo Ozawa

IPC: H04N007/18

CPC classification number: H04N9/735 ,  A61B1/045

Abstract: An electronic endoscope system with a color-balance alteration system includes a video scope having a CCD image sensor for producing a frame of color image-pixel-signals composed of frames of red, green, and blue image-pixel-signals. In the color-balance alteration system, nine red signals are extracted from the frame of red image-pixel-signals, and the nine signals form a 3null3 matrix including a central signal, and the eight circumferential signals. All four sets of three signals are selected from the nine signals, and each set of three signals is composed of the central signal, and two neighbouring signals aligned with each other such that the central signal lies therebetween. When a signal level of the central signal is smaller than both signal levels of the two circumferential signals with respect to even one set of three signals, the signal level of signal is decreased.

Abstract translation: 具有色平衡改变系统的电子内窥镜系统包括具有CCD图像传感器的视频范围，用于产生由红色，绿色和蓝色像素信号的帧组成的彩色图像像素信号的帧。 在色平衡变换系统中，从红色图像像素信号的帧中提取九个红色信号，并且九个信号形成包括中心信号的三维矩阵和八个周围信号。 从九个信号中选择四组三个信号，并且每组三个信号由中心信号和两个相邻信号组成，使得中心信号位于它们之间。 当中心信号的信号电平小于两个周向信号的两个信号电平相对于一组三个信号时，信号的信号电平减小。