Microarray Image Denoising Using Complex Gaussian Scale Mixtures of Complex Wavelets

作者：Srinivasan Lakshmi^*; Rakvongthai Yothin; Oraintara Soontorn

来源：IEEE Journal of Biomedical and Health Informatics, 2014, 18(4): 1423-1430.

DOI：10.1109/JBHI.2014.2318279

• Complementary DNA (cDNA) microarray image
• complex gaussian scalemixtures (CGSMs)
• complex wavelet transform
• denoising

Microarray images when contaminated with noise may severely affect the detection and quantification of gene expression. In this paper, we propose to use the complex Gaussian scale mixture (CGSM) model in complex wavelet domain for noise reduction in complementary DNA microarray images. Based on the joint information in the red and green channel microarray images, we model the complex wavelet coefficients of the channel images jointly using the CGSM, and subsequently perform image denoising using Bayes least square estimator in complex wavelet domain. The experimental results show that using the CGSM of complex wavelet coefficients provides better noise reduction of microarray images compared to other complex wavelet-based models.

• 出版日期2014-7