计算机科学 ›› 2023, Vol. 50 ›› Issue (6A): 220300265-7.doi: 10.11896/jsjkx.220300265
安子恒, 徐超, 冯博, 韩俱宝
AN Ziheng, XU Chao, FENG Bo, HAN Jubao
摘要： 为了解决医学内窥镜图像中存在的光照不均匀、黏膜下组织血管模糊、对比度低等问题,文中提出了一种新颖的内窥镜图像增强算法。该方法分为两部分,第一部分采用象限剪裁直方图伽马校正的方法实现亮度增强,首先对亮度通道的直方图进行分象限剪裁得到平滑的累积分布函数(CDF),然后利用截断CDF的方式来控制伽马参数的大小;第二部分基于融合通道先验增强图像的对比度和清晰度,首先利用离散小波变换融合图像的绿色通道和红色通道,得到细节丰富的图层,用于生成图像形成模型(IFM)的初始透射图,然后通过提出的理想函数模型校正初始透射图,得到清晰的图像,最后结合CLAHE实现组织和血管的对比度增强。在实验室自建的MEDS数据集上,将所提方法和其他几种现有方法进行主观和客观分析,结果表明所提方法在提高血管和组织对比度的同时,避免了图像过度增强。
中图分类号:
| [1]HUANG S W,LIN G S,CHEN C H,et al.2D-to-3D Conversion for laparoscopic video in minimally invasive surgery[C]//Proc.International Workshop on Advanced Image Technology(IWAIT).2016. [2]KIM C B,ARMSTRONG G W.Characterizing Infectious Keratitis Using Artificial Intelligence[J].International Ophthalmology Clinics,2022,62(2):41-53. [3]YAO M,ZHU C.Study and comparison on histogram-based local image enhancement methods[C]//2017 2nd International Conference on Image,Vision and Computing(ICIVC).IEEE,2017:309-314. [4]IBRAHIM H,KONG N S P.Brightness preserving dynamic histogram equalization for image contrast enhancement[J].IEEE Transactions on Consumer Electronics,2007,53(4):1752-1758. [5]WANG Y,CHEN Q,ZHANG B.Image enhancement based on equal area dualistic sub-image histogram equalization method[J].IEEE Transactions on Consumer Electronics,1999,45(1):68-75. [6]YADAV G,MAHESHWARI S,AGARWAL A.Contrast limi-ted adaptive histogram equalization based enhancement for real time video system[C]//2014 International Conference on Advances in Computing,Communications and Informatics(ICACCI).IEEE,2014:2392-2397. [7]DU M,ZHAO X J.Face Enhancement Algorithm with VariableIllumination Based on Improved Retinex[J].Computer Science,2016,43(2):105-108,112. [8]ZHANG X,WANG W,XIAO D.Improved Image Enhance-mengt Algorithm Based on Multi-scale Retinex with Chromaticity Preservation[J].Computer Science,2018,45(10):246-249. [9]JOBSON D J,RAHMAN Z,WOODELL G A.A multiscale re-tinex for bridging the gap between color images and the human observation of scenes[J].IEEE Transactions on Image Processing,1997,6(7):965-976. [10]HE K,SUN J,TANG X.Single image haze removal using dark channel prior[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,2010,33(12):2341-2353. [11]HUANG S C,CHENG F C,CHIU Y S.Efficient contrast enhancement using adaptive gamma correction with weighting distribution[J].IEEE Transactions on Image Processing,2012,22(3):1032-1041. [12]PALANISAMY G,PONNUSAMY P,GOPI V P.An improved luminosity and contrast enhancement framework for feature preservation in color fundus images[J].Signal,Image and Video Processing,2019,13(4):719-726. [13]ZHOU M,JIN K,WANG S,et al.Color retinal image enhancement based on luminosity and contrast adjustment[J].IEEE Transactions on Biomedical engineering,2017,65(3):521-527. [14]GUO X,LI Y,LING H.LIME:Low-light image enhancementvia illumination map estimation[J].IEEE Transactions on image processing,2016,26(2):982-993. [15]WANG L,WU B,WANG X,et al.Endoscopic image luminance enhancement based on the inverse square law for illuminance and retinex[J].The International Journal of Medical Robotics and Computer Assisted Surgery,2022,18(4):e2396. [16]VELUCHAMY M,SUBRAMANI B.Fuzzy dissimilarity color histogram equalization for contrast enhancement and color correction[J].Applied Soft Computing,2020,89:106077. [17]FRUCCI M,RICCIO D,DI BAJA G S,et al.Severe:Segmenting vessels in retina images[J].Pattern Recognition Letters,2016,82:162-169. [18]NAIR R R,SINGH T.Multi-sensor medical image fusion using pyramid-based DWT:a multi-resolution approach[J].IET Image Processing,2019,13(9):1447-1459. [19]ZHU Z Y.A novel image fusion approach based on rough set and wavelet analysis[C]//Key Engineering Materials.Trans Tech Publications Ltd,2010,439:1069-1074. [20]REZAZADEH S,COULOMBE S.A novel discrete wavelettransform framework for full reference image quality assessment[J].Signal,Image and Video Processing,2013,7(3):559-573. [21]WANG S,MA K,YEGANEH H,et al.A patch-structure representation method for quality assessment of contrast changed images[J].IEEE Signal Processing Letters,2015,22(12):2387-2390. [22]AGAIAN S S,PANETTA K,GRIGORYAN A M.Transform-based image enhancement algorithms with performance measure[J].IEEE Transactions on Image Processing,2001,10(3):367-382. [23]MITTAL A,MOORTHY A K,BOVIK A C.No-reference image quality assessment in the spatial domain[J].IEEE Transactions on Image Processing,2012,21(12):4695-4708. |
|
||
首页