| 761 | 46 | 58 |
| 下载次数 | 被引频次 | 阅读次数 |
给出一种基于同态滤波的彩色图像增强算法。引入新的传递函数,改进同态滤波算法,用以增强低照度彩色图像的RGB各分量;将RGB图像转换到HSV彩色空间,保持色度和饱和度不变,利用对比度受限自适应直方图均衡法对亮度分量进行变换和分段线性拉伸;将HSV图像还原为RGB图像,得到增强图像。仿真结果显示,所给算法在提升图像亮度的同时,能够增强图像细节。
Abstract：A color image enhancement algorithm based on the homomorphic filtering is proposed.Firstly,by introducing a new transfer function the traditional homomorphic filtering algorithm is improved to enhance the RGB three components of color image.Secondly,the RGB image is converted to HSV color space.Hue and saturation maintained are unchanged,but the brightness component is enhanced by using CLAHE transform and piecewise linear stretch.Finally,the final color enhanced image is obtained by converting the HSV back to the RGB image.Simulation results show that the new algorithm can not only enhance the image brightness but also enhances image detail.
[1]Voicu A L I,Myler H R,Weeks A R.Practical considerations on color image enhancement using homomorphic filtering[J].Journal of Electronic Imaging,1997,6(1):108-113.
[2]Ein-Shoka A A,Kelash H M.Enhancement of IR Images using Homomorphic Filtering in Fast Discrete Curvelet Transform(FDCT)[J].International Journal of Computer Applications,2014,96(8):22-25.
[3]Shahamat H,Pouyan A A.Face recognition under large illumination variations using homomorphic filtering in spatial domain[J].Journal of Visual Communication and Image Representation,2014,25(5):970-977.
[4]Belykh I.Homomorphic Filtering for Radiographic Image Contrast Enhancement and Artifacts Elimination[J].Advances in Intelligent Systems and Computing,2015,20(3):423-430.
[5]Sim K S,Tso C P,Tan Y Y.Recursive sub-image histogram equalization applied to gray scale images[J].Pattern Recognition Letters,2007,28(10):1209-1221.
[6]周卫星,廖欢.基于高频强调滤波和CLAHE的雾天图像增强方法[J].电视技术,2010,34(7):38-40.
[7]Adelmann H G.Butterworth equations for homomorphic filtering of images.[J].Computers in Biology and Medicine,1998,28(2):169-181.
[8]焦竹青,徐保国.基于同态滤波的彩色图像光照补偿方法[J].光电子·激光,2010,9(4):602-605.
[9]张亚飞,谢明鸿.基于HSI和局部同态滤波的彩色图像增强算法[J].计算机应用与软件,2013,27(12):303-307.
[10]陈春宁,王延杰.在频域中利用同态滤波增强图像对比度[J].微计算机信息,2007,23(6):264-266.
[11]田小平,乔东,吴成茂.基于双直方图均衡化的彩色图像增强[J].西安邮电大学学报,2015,20(2):58-63.
[12]杨有,李波.CLAHE和细节放大相结合的档案图像增强方法[J].中国图像图形学报,2011,16(4):522-527.
[13]Yousuf M A.An Effective Image Contrast Enhancement Method Using Global Histogram Equalization[J].Journal of Scientific Research,2011,3(1):43-50.
[14]Kurt B,Nabiyev V V,Turhan K.Medical images enhancement by using anisotropic filter and CLAHE[C]//2012International Symposium on Innovations in Intelligent Systems and Applications(INISTA).Trabzon:IEEE,2012:1-4.
[15]Okuboyejo D A,Olugbara O O,Odunaike S A.CLAHE Inspired Segmentation of Dermoscopic Images Using Mixture of Methods[J].IEEE Transactions on Engineering Technologies,2014,12(3):355-365.
[16]张璞,王英,王苏苏.基于CLAHE变换的低对比度图像增强改进算法[J].青岛大学学报:工程技术版,2011,26(4):57-60.
[17]王红,何小海,杨晓敏.基于模糊理论和CLAHE的雾天图像自适应清晰化算法[J].微电子学与计算机,2012,29(1):32-34.
[18]高静波,吴成茂,田小平.基于清晰度的彩色图像量子增强算法[J].西安邮电大学学报,2011,16(2):4-8.
[19]马红微,吴成茂,屈汉章.基于局部对比度保存的动态范围压缩算法[J].西安邮电大学学报,2013,18(5):14-18.
基本信息:
DOI：10.13682/j.issn.2095-6533.2015.06.011
中图分类号:TP391.41
引用信息:
[1]田小平,程新,吴成茂,等.基于同态滤波的彩色图像增强[J].西安邮电大学学报,2015,20(06):51-55.DOI:10.13682/j.issn.2095-6533.2015.06.011.
基金信息:
国家自然科学基金重点资助项目(61136002);; 陕西省自然科学基金资助项目(2014JM8331,2014JQ5183)
2015-09-07
2015
2024-05-23
2024
9
2015-10-12
2015-10-12
2015-10-12