Obed Appiah

Framework for Prioritizing Contact Tracing and Mass Testing of COVID-19 Using Graph Theory

Obed Appiah, Dominic Otoo & Christopher Bombie Ninfaakang · Asian Journal of Research in Computer Science · 2021

Contact tracing has become one of the most useful tools for fighting the novel Corona Virus (COVID-19) pandemic worldwide. The underlining philosophy of contact tracing is determining people who have been in contact with infected persons and thus isolate them from becoming agents...

Open access Research Article 10.9734/ajrcos/2021/v7i130173

An Effective Algorithm for Denoising Salt-And-Pepper Noise in Real-Time

Obed Appiah, James Benjamin Hayfron-Acquah & Michael Asante · Asian Journal of Research in Computer Science · 2020

For computer vision systems to effectively perform diagnoses, identification, tracking, monitoring and surveillance, image data must be devoid of noise. Various types of noises such as Salt-and-pepper or Impulse, Gaussian, Shot, Quantization, Anisotropic, and Periodic noises corr...

Open access Research Article 10.9734/ajrcos/2020/v6i130149