Tracks video

Film. The film Avatar (2009) illustrated how far 3-D animation had been developed. The production used a technique called performance or motion tracking. Video cameras were attached to computers and focused on the faces of human actors as they performed their parts. In this manner, subtle facial expressions could be transferred to their animated avatars. Backgrounds, props, and associated scenery moved in relation to the actors. 

The Track Properties window displays all of the relevant information about the media file contents of a track. Since there are a few different kinds of tracks in ACID, the information displayed is dependent upon the type of track selected. Many of the properties that are displayed can be modified in this window (see Figure 1.20). While a media file (especially a loop file from Sonic Foundry) may already contain the extra information to specify a track s properties, these properties are independent of the actual file. In other words, a media file s ACID properties often correspond to a track s properties, but this is not necessary (an intended one-shot media file can be placed in a loop track). Video tracks do not have any properties that are displayed in this window. 

The increase of bit densities can easily be demonstrated by showing the bit area ha in llm ), which is determined by the bit cell length bl in fim) x track width(tti in //m), for various (commercial) recording systems. In the case of video Hi8 pal (long play) the... 

Figure 29 (Qin and Liu, 1982) shows the behavior of individual particles above the distributor recorded by video camera of small clusters of particles, coated with a fluorescent material and spot-illuminated by a pulse of ultra violet light from an optical fiber. The sequential images, of which Fig. 29 just represents exposures after stated time intervals, were reconstructed to form the track of motion of the particle cluster shown in Fig. 30. Neither this track nor visual observation of the shallow bed while fluidized, reveal any vestige of bubbles. Instead, the particles are thrown up by the high velocity jets issuing from the distributor orifices to several times their static bed height.

FIGURE 2-10 Tracking a gold particle attached to a single molecule of phosphatidyl ethanolamine. What appears to be simple Brownian diffusion at a time resolution of 33 ms per video frame (A) is revealed to actually consist of fast hop diffusion by recording 300 times faster (B) at 110 ps per video frame. In (A) each color represents 60 frames = 2 seconds. In (B) each color indicates an apparent period of confinement within a compartment and black indicates intercompartmental hops. The residency time for each compartment is indicated. The hypothetical explanations are illustrated in part (C) and discussed in the text. Adapted from [29]. 

Auditory Stereotyped behavioral response to a sudden sound Acoustic startle response by video tracking Bang et al. 219 Zeddies and Fay 220 Whitfield221... 

Surveillance technology can be divided into general categories video surveillance, tracking, illumination, and telescopic and detection devices. The technical developments in each method have been dramatic. 

McQuain et al. (2003) undertook a detailed study on the effects of relative humidity and a direct comparison of fhe impacts DMSO vs. betaine in print buffer on the overall performance of quill pin printing. A video microscope was employed to visualize and track the drying behaviors of the various printing inks. A Cy5-labeled 466-bp dsDNA probe was used to monitor the printing process. Drop-drying behavior, bulk evaporation from the quill reservoir, surface tension changes, and spothng characteristics (spot diameter, spread, and number deposited) were examined at different RH levels. 

By taking advantage of your computer s multimedia capabilities, sound, video, and graphics are used to offer tutorials and career-related advice. Upon creating your resume and cover letter, the software s contact management module can be used for keeping track of the potential employers you contact. 

CSM has coupled the FBRM with a second probe, the particle video microscope, PVM (Lasentec/Mettler Toledo), which consists of six illuminating near-infrared lasers (850 nm) that are transmitted into the sample. While the FBRM provides precise quantitative tracking of the chord lengths, the PVM probe provides qualitative images of the hydrate particle size and degree of agglomeration. The size range scale of hydrate particles that can be measured with the PVM probe is 10-300 i,m. 

Sbalzarini IF, Koumoutsakos P (2005) Feature point tracking and trajectory analysis for video imaging in cell biology. J Struct Biol 151 182-195... 

Optional automated electromechanical strain gauge device, video-tracking system. 

This test can be performed manually or with automated video/software systems. Manual labor is not as high throughput as automated behavioral tracking software, and the latency of the observer to react can reduce the accuracy or data acquisition. Regardless of manual or automatic observation, the number of mice that can be tested depends on the duration of the test (6 min is enough to obtain reliable data and to determine significance in this test therefore, 10 mice could be done per hour). 

A computer, digital camera mounted above the test apparatus and video-tracking software will aid researchers in the collection of accurate behavioral data. 

In addition to automated tracking, an observer with a timer and data sheet to tally behaviors will allow comparison of data if video tracking is unreliable due to poor detectability (from poor angle or bad contrast e.g., if fur color matches the background). 

The open arm, closed arm, and total (open + closed arm) activity can be recorded for 5-10 min using a video-tracking system, while the researchers simultaneously document the number of arm entries (all four paws are on the arm) and time spent on each open arm (see Notes 4 and 5). 

Any video-tracking system (see Table 18.2 for details) may be useful for measuring amount of movement and position within the test apparatus. Conversely, the apparatus may be sectioned off, and duration in each section can be recorded, comparing the perimeter sections to the novel object section (24) (see Note 34). 

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