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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]
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.
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 ...
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 .
A camera dolly is a wheeled cart or similar device used in filmmaking and television production to create smooth horizontal camera movements. The camera is mounted to the dolly and the camera operator and focus puller or camera assistant usually ride on the dolly to push the dolly back and forth.
In production or post-production, reframing can be used to change a sequence without having to reshoot. For example, zooming in on an actor to edit out nudity for a movie to be broadcast over the air. Types of reframing can include: pan, tilt, zoom, crane or boom shot, dolly or trucking shot, handheld shot, tracking shot, and steadycam shot. [1]
The unchained camera technique (entfesselte Kamera in German) was an innovation by cinematographer Karl Freund that allowed for filmmakers to get shots from cameras in motion enabling them to use pan shots, tracking shots, tilts, crane shots, etc. [1]
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.