Special issue Visual system and image technology. 5. Visual characteristics and picture coding techniques. 3. Evaluation of picture quality for digital coding systems.

Visual Pattern Image Coding by a Morphological Approach (RESEARCH NOTE)

This paper presents an improvement of the Visual Pattern image coding (VPIC) scheme presented by Chen and Bovik in [2] and [3]. The patterns in this improved scheme are defined by morphological operations and classified by absolute error minimization. The improved scheme identifies more uniform blocks and reduces the noise effect. Therefore, it improves the compression ratio and image quality i...

Heuristic Evaluation of Picture Archiving and Communication Systems (PACS)

Introduction: Poor User Interface design can be one of the probable reasons of users’ error and reduced incentive in using health information systems such as PACS. Heuristic evaluation is one the methods for assuring the proper user interface design of health information systems such as PACS. Method: This study was a descriptive-analytic research conducted in 2019 through using Nielsen usabilit...

Heuristic Evaluation of Picture Archiving and Communication Systems (PACS)

Introduction: Poor User Interface design can be one of the probable reasons of users’ error and reduced incentive in using health information systems such as PACS. Heuristic evaluation is one the methods for assuring the proper user interface design of health information systems such as PACS. Method: This study was a descriptive-analytic research conducted in 2019 through using Nielsen usabilit...

Channel Coding — The Big Picture

Digital Video Image Quality and Perceptual Coding

Resumo: Based on a human visual system (HVS) based approach, digital video image quality and perceptual coding (DVIQPC) outlines the principles, metrics an standards associated with perceptual coding as well as the latest techniques and applications. It discusses the latest developments in vision research as they relate to HVS based video and image coding. It discusses subjective and objective ...