Speech quality evaluation for different pitch detection algorithms in LPC speech analysis-synthesis system. - Sandeep Kumar; Sneha Singh; Prabhakar Agarwal; Upendra Kumar Acharya; Prabira Kumar Sethy; Chanki Pandey (Int. J. Speech Technol., 2021)

Directed searching optimized mean-exposure based sub-image histogram equalization for grayscale image enhancement. - Upendra Kumar Acharya; Sandeep Kumar (Multim. Tools Appl., 2021)

Image sub-division and quadruple clipped adaptive histogram equalization (ISQCAHE) for low exposure image enhancement. - Upendra Kumar Acharya; Sandeep Kumar (Multidimens. Syst. Signal Process., 2023)

Hybrid deep neural network for automatic detection of COVID-19 using chest x-ray images. - Upendra Kumar Acharya; Mohammad Taha Ali; Mohd Kaif Ahmed; Mohd Tabish Siddiqui; Harsh Gupta; Sandeep Kumar; Ajey Shakti Mishra (Int. J. Imaging Syst. Technol., 2023)

Directed searching optimized texture based adaptive gamma correction (DSOTAGC) technique for medical image enhancement. - Upendra Kumar Acharya; Sandeep Kumar (Multim. Tools Appl., 2024)

Brain tumor image segmentation using model average ensembling of deep networks. - Ajey Shakti Mishra; Upendra Kumar Acharya; Akanksha Srivastava; Aashi Rohit Modi; Sandeep Kumar (Int. J. Syst. Assur. Eng. Manag., 2024)