الصورة السينمائية: الإنتقال من الشكل التناظري إلى الشكل الافتراضي

Abstract

Analog and digital signals are processes for data transfer and storage. (voice, photo, video, etc.) Analog arose with the advent of electricity, while the term digital recently emerged with the computer age, the principle of analog is to reproduce the signal to be recorded (sound, video, in a similar form on a medium (generally magnetic). In the digital system, the analog signal to be recorded is digitized using a digital analog converter. After this transformation, the signal is no more than a series of "0" and "1". A two-amplitude signal rather than an analog infinity. And as a result of this development, we're talking about the concept of default. When green screens, special digital effects, or even 3D are introduced, the concept of default is the innovation that revolutionized cinema. And here we can ask the question, "Why?" Because it's simply a technique that can be used at all levels, whether in pre-production, production or during the last phase, promotion.