Computer Vision is an attempt to reproduce with a machine (computer)
the cognitive processes by processing the visual information
contained in images and videos.
Several aspects of the visual system are relevant to Computer Vision:
- Illumination: the physical process that generates the light that
illuninates the observed scene;
- Acquisition: how the light rays are collected, interacts with
the imaging device sensors, and are transformed into electrical
- Processing: how digital images are generated from the electrical signals,
and their (usually low-level) transformation;
- Recognition: the extraction of a high-level description from images,
through features and constructs that enable an high-level reasoning on
- Storing: how the image/video information is stored and retrieved,
either digitally or analogically.
The aim of a visual system is a symbolic description of the observed scene
that can be used by other systems to interoperate with the environment.
In a visual system, these componnets are not usually arranged in a linear
flow of execution, but they are often interrelated with lines of feedback.
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