Still another data compression system associated with images is TIFF (short for Tagged Image File
Format). STA301 Final Term Past Paper 2021 However, the most popular use of TIFF is not as a means of data compression but instead as a standardized format for storing photographs along with related information such as date, time, and camera settings. In this context, the image itself is normally stored as red, green, and blue pixel components without compression.
STA301 Final Term Past Paper 2021
The TIFF collection of standards does include data compression techniques, most of which are designed
for compressing images of text documents in facsimile applications. STA301 Final Term Past Paper 2021These differences are used in stroke length Encoding to take advantage of the fact that text documents consist of long strings of white pixels. the color The image compression option included in the TIFF standards is based on techniques similar to those used by GIF and is therefore not widely used in the photography community. Data Compression: Audio and Video Compression.
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The most popular audio and video encoding and compression standards were developed by: the Motion Picture Experts Group (MPEG) overseen by ISO. STA301 Final Term Past Paper 2021 In contrast, these same standards MPEG encompasses a variety of standards for different applications. For example, the demands for high definition television (HDTV) broadcast are distinct from those for video conferencing, in which the broadcast signal must find its way over a variety of communication paths that may have limited capabilities.
Both of these applications differ from that of storing the video in such a manner that sections can be replayed or skipped over. The techniques employed by MPEG are well beyond the scope of this text, but in general, video compression techniques are based on video being constructed as a sequence of pictures in much the same way that motion pictures are recorded on film. To compress such sequences, only some of the pictures.