Saturday, January 24, 2015

About Deinterlacing

Generally speaking, interlaced video can be directly displayed on ALiS plasma panels and the old CRTs. However, modern computer video displays and TV sets are mostly based on LCD technology, the majority of which adopt progressive scanning. Therefore, interlaced video can not be directly displayed on such modern computer video displays and TV sets. Under this circumstance, the technique of deinterlacing is of great necessity and value in our daily life. The process of deinterlacing plays a vital role for people to display interlaced video on a progressive scan display.

As a matter of fact, deinterlacing is an imperfect technique. Most of the time, it will lower the resolution and lead to a variety of artifacts, especially in those areas with objects in motion. Only when users are equipped with some very expensive and complex devices and algorithms can they get the interlaced video with the best picture quality. For television displays, deinterlacing systems are integrated into progressive scan TV sets that accept interlaced video.

The majority of modern computer monitors do not support interlaced video. Therefore, users have to perform deinterlacing in the software in advance, which enables the interlaced video to be played back on a computer display. Actually, the deinterlacing process often adopts some vey simple methods. As a result, the interlaced video often has visible artifacts on computer systems. Interlaced video may be edited by computer systems, but the video content being edited can only be viewed properly with the help of a separate video display hardware for there the computer video display system and the interlaced television signal format have various differences. Fortunately, current manufacture TV sets has adopted a system of a system of intelligently extrapolating the extra information that would be present in a progressive signal entirely from an interlaced original.