Search results
Results from the WOW.Com Content Network
However, the purpose of a tracking matte is to prevent tracking algorithms from using unreliable, irrelevant, or non-rigid tracking points. For example, in a scene where an actor walks in front of a background, the tracking artist will want to use only the background to track the camera through the scene, knowing that motion of the actor will ...
A tracking shot is a blanket term used to refer to any camera shot with movement, with "trucking shot" and "dolly shot" being tracking shot variations. Generally, a "dolly shot" refers to a specific variation of tracking shot in which the camera moves forwards or backwards with respect to the subject.
DVCPRO Progressive was introduced by Panasonic alongside DVCPRO50. It offered 480 or 576 lines of progressive scan recording with 4:2:0 chroma subsampling and four 16-bit 48 kHz PCM audio channels. Like HDV-SD, it was meant as an intermediate format during the transition time from standard definition to high definition video. [16] [17]
Video tracking is the process of locating a moving object (or multiple objects) over time using a camera. It has a variety of uses, some of which are: human-computer interaction, security and surveillance, video communication and compression , augmented reality , traffic control, medical imaging [ 1 ] and video editing .
It is widely used in computer vision tasks such as image annotation, [2] vehicle counting, [3] activity recognition, [4] face detection, face recognition, video object co-segmentation. It is also used in tracking objects , for example tracking a ball during a football match, tracking movement of a cricket bat, or tracking a person in a video.
Although sometimes compared to DivX products, Xvid is neither a container format nor a video format, it is a software library that encodes video using specific coding profiles of the common MPEG-4 ASP video format. Those types of restrictions are intended to simplify the construction of multimedia recorders and players.
This format uses a helical scan head drum 80 mm in diameter. The video tracks read by the video heads in the drum, are 22 microns wide. The video heads have a 15.25 degree azimuth. 4:2:2 Chroma subsampling is used, and the drum rotates at 5400 RPM for NTSC video. Due to the use of an MPEG format, video is recorded with 8-bit samples (8-bit ...
Often the camera is mounted on a camera dolly which rides on rails similar to a railroad track; in this case, the shot is referred to as a dolly shot." Note that in one sentence tracking shots are said to be different from dolly shots, and in the next a tracking shot can be referred to as a dolly shot. This article needs a thorough revision.