1. Video signal digitization

Digitizing any signal involves first – and then, after filtering to avoid spectrum aliasing –, sampling it.

These analog samples are then quantized on a number of levels, giving a parallel n-bit bitstream. For ease of transport, this is followed by a serialization step, enabling us to return to coaxial cable as in analog.

Digitizing a video signal imposes additional constraints due to its three-dimensional aspect. The signal must be sampled and quantified, and a sampling structure chosen that takes into account both the spatial and temporal aspects of the image.

Let's recall some of the characteristics of the video signal. We live in a four-dimensional space, with three spatial dimensions and one temporal dimension. With the advent of television, one spatial dimension disappeared, as the camera lens projects reality...

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Video signal digitization

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Quantification

Bibliography

References

(1) - DELMAS (J.-P.) - Éléments de théorie du signal : les signaux déterministes - . 1991 Ellipses.
(2) - RÉMY (M.), POUYFÉRIÉ (A.), GRÉGEOIS (J.) - Notions fondamentales de colorimétrie - . Télévision, n 165, Société...

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