Semantic Rule Based Visual Representation of 2-D DFT for N=6. - R. Gopikakumari; C. K. Jayadas; Rajesh Cherian Roy; R. S. Roshni; C. S. Sridhar (CISST, 2003)

A Fast Approach to Visual Representation of Selected DFT for ((N))4=2. - R. Gopikakumari; C. K. Jayadas; Rajesh Cherian Roy; R. S. Roshni; C. S. Sridhar (CISST, 2003)

An invertible transform for image representation and its application to image compression. - Rajesh Cherian Roy; M. S. Anish Kumar; R. Gopikakumari (ISSPA, 2007)

Relationship between the Haar transform and the MRT. - Rajesh Cherian Roy; R. Gopikakumari (ICICS, 2011)

Relationship between the Cosine Integer Transform and the Mapped Real Transform. - Rajesh Cherian Roy (ICACCI, 2018)

The Effect of Synthetic Voice Data Augmentation on Spoken Language Identification on Indian Languages. - A. R. Ambili; Rajesh Cherian Roy (IEEE Access, 2023)