Aim: COVID-19 pandemic has caused significant social, economic and health impact worldwide, including Hong Kong. It causes unpredictable challenges to healthcare system. After implementing quarantine social distancing measures, it is believed that patients have avoided seeking medical help due avoidance of settings. The aim the study investigate influence on presentation clinical outcome acute ...

 Image restoration is an essential preprocessing step for many image analysis applications. In any image restoration techniques, keeping structure of the image unchanged is very important. Such structure in an image often corresponds to the region discontinuities and edges. The techniques based on partial differential equations, such as the heat equations, are receiving considerable attention i...