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A modified Otsu-based image segmentation algorithm (OBISA)
Unajan, Magdalene C. 
; Gerardo, Bobby D. ; Medina, Ruji P. (Newswood Limited, 2019-03-13)
; Gerardo, Bobby D. ; Medina, Ruji P. (Newswood Limited, 2019-03-13)
Image thresholding is usually a preprocessing step in a number of image processing algorithms. The segmented images are input for image analyses, computer vision, and visualizations and object representation. Otsu thresholding ...
Relocating local outliers produced by K-means and K-medoids using local outlier rectifier V. 2.0
; Gerardo, Bobby ; Medina, Ruji (Institute of Electrical and Electronics Engineers Inc., 2020-02-06)
; Medina, Ruji (Institute of Electrical and Electronics Engineers Inc., 2020-02-06)
The extensive growth in the field of information and communication technology allows easy capture of massive amounts of valuable data in different areas. These data are used in various data mining techniques. However, in ...
Analysis of key randomness in improved one-time pad cryptography
; Gerardo, Bobby D. ; Medina, Ruji P. (IEEE Computer Society, 2019-12-09)
; Medina, Ruji P. (IEEE Computer Society, 2019-12-09)
In cryptography, one-time pad (OTP) is claimed to be the perfect secrecy algorithm in several works if all of its features are applied correctly. Its secrecy depends mostly on random keys, which must be truly random and ...
Using a modified approach of blowfish algorithm for data security in cloud computing
; Gerardo, Bobby D. ; Medina, Ruji P. (Association for Computing Machinery, 2018-12-29)
; Medina, Ruji P. (Association for Computing Machinery, 2018-12-29)
Cloud computing brought remarkable potential changes and excellent opportunities to the information technology industry. It is particularly useful in most of the networked transactions. Cloud computing common issue problems ...