CIELAB色空间内窥镜色彩还原能力对比分析

发布时间：2019-03-27 18:38

【摘要】：基于CIELAB色空间评价硬性内窥镜色彩还原能力,并进行4支硬性内窥镜色彩还原能力对比分析。通过与内窥镜连接的工业相机拍摄内窥镜观测到的色彩标靶图像,拍摄图像发送至计算机保存并处理。处理后得到图像中红绿蓝色块的RGB值,将RGB值转换至CIELAB色空间进而求得图像的L*、a*、b*值,最后利用已知标靶色块的L*、a*、b*值和求得的图像L*、a*、b*值计算CIELAB色差ΔE*ab,即色彩还原误差值。实验数据表明:4支内窥镜的色彩还原误差值都在47.9以上;4号腹腔镜对红、绿、蓝三色块的色彩还原误差值最小,色彩还原能力最好;2号宫腔检查镜对三色块色彩还原误差值比较大,色彩还原能力最差;1号鼻窦镜和3号关节镜的色彩还原能力处于中间水平。CIELAB色空间作为国际通用的测色标准,可以用于评价硬性内窥镜色彩还原能力。
[Abstract]:The color reduction ability of hard endoscope was evaluated based on CIELAB color space, and the color reduction ability of four hard endoscopes was compared and analyzed. Image of color target observed by endoscope is taken by industrial camera connected to endoscope, which is sent to computer to save and process. After processing, the RGB value of the red-green-blue block in the image is obtained, and the RGB value is converted to the CIELAB color space to obtain the image's L, a, b * values. Finally, using the known target color blocks'L, a, b * values and the obtained image L, a, a * values, The B * value calculates the CIELAB color difference 螖 E *, that is, the color reduction error value. The experimental data show that the color reduction errors of the four endoscopes are above 47.9, the color reduction errors of the red, green and blue color blocks are the smallest and the color reduction ability is the best for the 4 endoscopes, and the color reduction error of the four endoscopes is above 47.9. The error of color reduction of the trichromatic block was larger and the ability of color reduction was the worst in the second hysteroscopy. The color reduction ability of No. 1 sinus endoscope and No. 3 arthroscope is in the middle level. CIELAB color space, as an international standard of color measurement, can be used to evaluate the color reduction ability of hard endoscopy.
【作者单位】：解放军第三○五医院医学工程科;解放军第三○五医院物资采购管理办公室;南方医科大学生物医学工程学院;北京大学第三医院医学工程科;
【基金】：军事医学计量科研专项(2011-JL2-027) 解放军第305医院科研基金项目(12YA2)
【分类号】：TH776.1

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