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VQiPS: Video System Tasks
Guide to Defining Video Quality Requirements
Select:
| Getting Started | Use Cases | Use Classes | GUC Aspects | GUC Questionnaire | GUC Example | Video System Tasks | Video System Functions | Acquire Video | Deliver Video | View Video | Video System Functions |
Video System Tasks
Three fundamental tasks provide the foundation for any basic video system. Each task includes functions requiring equipment that has a direct effect on the quality of the video, which means each piece of equipment has the potential to alter the video to a degree that impacts the video’s usability.
The figure provides a reference model for core system functions, which support three primary tasks:
- Acquire Video - Includes focus and capture functions, and may include a built-in coding/decoding (CODEC), which can perform the processing function’s encoding/decoding operations. However, in some video systems, such as those used for surveillance applications, the encode operation might be performed in a separate information technology (IT) space.
- Deliver Video - Includes the processing (encode and decode), storage, and transport functions. Sometimes the acquire and view tasks include the processing function’s encoding/decoding operations.
- View Video - Includes the display function and may include a built-in coding/decoding (CODEC), which can perform the processing function’s decoding operation. However, in some video systems, such as those used for surveillance applications, the decode operation might be performed in a separate information technology (IT) space.
The exact demarcation for each of the three tasks can vary from application to application due to integration of various functions within your equipment.