CS 641 Takehome Midterm Exam
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چکیده
Distributed applications that deal with large multimedia objects spend much time to transmit data over network. Thus, reducing the transmission costs improve response time and system efficiency. One way to improve response time is reducing data size. Lossy compression techniques for multimedia data can decrease data size in charge of losing some information. Multimedia data is more tolerant to lose some parts of data. In this paper, impact of reducing image quality, in other words reducing filesize, to achieve better transmission times over wide area network is studied. To do it, effects of some parameters on transmission time should be identified, such as, transmission distance, image attributes, time of day, computation power, physical media, storage, user defined quality level, response time. Relationship between these parameters and transmission time should be found. Transmission time of an image basically consists of three main processes: transmission over network, accessing to requested image data on sender (getting image file, compressing it etc.) and displaying image on receiver. These parts should be studied separately and their effects to each other should be found.
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تاریخ انتشار 2002