DESIGN OF IMAGE QUALITY FOR ELECTRONIC ENDOSCOPE BASED ON HUMAN PERCEPTION

基于人类感知的电子内窥镜图像质量设计

• 批准号: 08455031
• 负责人: MIYAKE Yoichi
• 金额: $ 4.93万
• 依托单位: CHIBA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455031/
• 关键词: ENDOSCOPE; REFLECTANCE SPECTRA; MUCOUS MEMBRANE; IMAGE QUALITY; COLOR REPRODUCTION; 大腸粘膜; 内視鏡; 電子ない視鏡; 主成分分析; 色順応; 内視鏡分光器

It is our goal to improve the image quality, particularly color reproduction of electronic endoscopes. To achieve our goal, we have developed the endoscopie spectrophotometer to measure the spectral reflectance of gastric mucous membrane. Three hundred and ten spectra have been analyzed by principal component analysis. The results indicate that the reflectance spectra can be adequately described using only three principal components. Based on the above experimental result, it is shown that the spectral reflectance of gastric mucous membrane can be calculated from the R, G, B signals of the conventional electronic endoscopes. Therefore, spectral reflectance of all pixels in gastric mucous membrane taken by electronic endoscopes can be estimated less than the average color difference DELTAE^*_<uv>= 2.66 in the L^* u^* v^* color space. Then computer simulations of the color reproduction of' electronic endoscopes were performed, and the resulting spectral characteristics under different illuminants are described and analyzed. We also proposed a new method to design mosaic filters on CCD area sensor by using the reflectance spectra of gastoric mucous membrane.

提高电子内窥镜的图像质量，特别是彩色重现性是我们的目标。为了实现我们的目标，我们研制了内窥镜分光光度计来测量胃粘膜的光谱反射率。用主成分分析方法对310个光谱进行了分析。结果表明，仅用三个主成分就可以很好地描述反射光谱。根据上述实验结果，可以从常规电子内窥镜的R、G、B信号中计算出胃粘膜的光谱反射率。因此，在L^*u^*v^*颜色空间中，电子内窥镜获取的胃粘膜所有像素的光谱反射率可以估计为小于平均色差DELTA^*&lt；UV&gt；=2.66。然后对电子内窥镜的颜色再现进行了计算机模拟，并对不同光源下的光谱特性进行了描述和分析。提出了一种利用胃粘膜反射光谱设计面阵CCD型马赛克滤光片的新方法。

项目成果

Y.Miyake, H.Haneishi and N.Tsumura: "Principal Component Analysis of Reflection Spectra of Gastoric Mucous Membrane and its Application for Improvement of Color Reproduction in Electronic Endoscopes" Proc.ICPS'98. 19-23 (1998)

Y.Miyake、H.Haneishi 和 N.Tsumura：“胃粘膜反射光谱的主成分分析及其在改善电子内窥镜色彩再现方面的应用”Proc.ICPS98。

H.haneishi, J.Harigai, N.Tsumura and Y.Miyake: "Optimum design of spectval chavactevistic of light source for snd optical Endescope" Pvoc.IS&T(povfland). (発表予定). (1998)

H.haneishi、J.Harigai、N.Tsumura 和 Y.Miyake：“光学内窥镜光源光谱差的优化设计”Pvoc.IS&T（povfland）（即将发表）。

H.Haneishi, Jungo Harigai, N.Tsumura and Y.Miyake: "Optimum design of spectral characteristic of light source for an optical endoscope" Proc.IS&T PIC Conference. 43-46 (1998)

H.Haneishi、Jungo Harigai、N.Tsumura 和 Y.Miyake：“光学内窥镜光源光谱特性的优化设计”Proc.IS

F.Imai,N.tsumura,H.Haneishi,and Y.Miyake: "Drincipae Component Analysis of Skin Color and its Application to Colorimetric Color Repratuction oh CRT Display and Hori" J.Imaging Science and Technology(USA). 40(5). 422-430 (1996)

F.Imai、N.tsumura、H.Haneishi 和 Y.Miyake：“皮肤颜色的 Drincipae 成分分析及其在 CRT 显示器和 Hori 色度色彩再现中的应用”J.Imaging Science and Technology（美国）。

H.Haneishi,J.Harigai,N.Tsumura,Y.Miyake: "Optimum design of spectral characteristics of light source for an optical endoscope" Proc.IS&T PICS Conterenu. 43-46 (1998)

H.Haneishi，J.Harigai，N.Tsumura，Y.Miyake：“光学内窥镜光源光谱特性的优化设计”Proc.IS