Let us begin the post with a piece of information. In the Internet more than 50 percentage of traffic is due to video transmission. Colour movies emerged in early 1930s and it was the only source of video at that time. TV emerged in 1950s and added huge collection video to the world. The evolution of video from 1934 to 2014 (80 years) is to be discussed in this post.
Video Classification
For a general public, a movie stored in video cassette or Video Compact Disc (VCD) is considered as a video. But a graduate in electronics engineering will quantify video as “sequence of still pictures (frames) that are displayed on screen in a very small time interval.” Video can be classified into three major categories namely; entertainment video, Industrial video and Surveillance video. As name implies entertainment video encompasses movies and TV programmes. As per the definition Black and White (B&W) silent movies come under the category of video. But in this post it is restricted to colour talkies (colour movie with soundtrack). In manufacturing industries video cameras are extensively used to capture the production processes. Videos are analysed and features are extracted. These features are used as feedback in production processes. Machines fitted with camera replace human beings. They work 24x7, seven days a week without a holiday. As they don't require any pay rise, there is no strike in factories. The video content generated by machine vision systems can be branded as Industrial video. Most of the public places are monitored by a surveillance system. This cost effective method reduces the requirement of Beat Officers (police who are on patrol), aftermath of crime recorded video acts as clues to nail the culprits and acts as prosecution evidence in the court of law. Video content is increasing leaps and bounds.
