نتایج جستجو برای: video compression
تعداد نتایج: 258207 فیلتر نتایج به سال:
Information has become one of the most valuable assets in the modern era. Recent technology has introduced the paradigm of digital information and its associated benefits and drawbacks. A thousand pictures require a very large amount of storage. While the advancement of computer storage technology continues at a rapid pace a means of reducing the storage requirements of an image and video is st...
We work on multiresolution transforms, used in compression systems of image and video in which JPEG2000 is an update to JPEG. We process the basis constructions for the wavelet transforms, and estimate some of their characteristics with those of hierarchical transforms. In the compression performance as measured by PSNR(peak signal to noise ratio), the best performance is provided by H.264, but...
Video surveillance has been widely used in recent years to enhance public safety and privacy protection. A video surveillance system needs efficient transmission and storage of video data. Video compression techniques can be used to achieve this. State-of-the-art video compression methods such as H.264/AVC often lead to high computational complexity at the encoder, which is generally implemente...
Omnidirectional video is an adequate image-based scene representation data format for interactive walkthroughs or surround viewing of a scene over the Internet. While efficient compression is a key issue in this context, the properties of omnidirectional video are not in line with the assumptions that are made about video sequences by modern compression standards like MPEG-4 AVC/H.264. We intro...
This paper first provides an overview of two-dimensional (2-D) and three-dimensional mesh models for digital video processing. It then introduces 2-D mesh-based modeling of video objects as a compact representation of motion and shape for interactive, synthetic/natural video manipulation, compression, and indexing. The 2-D mesh representation and the mesh geometry and motion compression have re...
In the first part of our project report, published in the October-December 1998 issue, we described a new technique for multimedia broadcasting over the Internet, called IP Simulcast. In this article we introduce a new video compression technique, called XYZ compression, which suits ultra-low bandwidth applications very well. Current technology permits delivering video over the Internet. Video ...
AbstractThis paper investigates fast software implementations of integer transforms in video encoders. The ever increasing demand for video applications on the public Internet and particularly in environments of low bandwidth necessitate the need for video compression. In a video encoder a hybrid of data compression units and algorithms are used to remove redundancy in the video. The 4x4 intege...
Because of the explosively increasing information of image and video in various storage devices and Internet, the image and video compression technique becomes more and more important. This paper introduces the basic concept of data compression which is applied to modern image and video compression techniques such as JPEG, MPEG, MPEG-4 and so on. The basic idea of data compression is to reduce ...
H.264/AVC is the state-of-the-art in modern video compression standards. It has extremely high compression ratio to meet the requirements the video communication between portable devices. H.264/AVC is a block-based compression method. Given that it is a block-based compression method, which means that it perform the whole video frame with same coding strategy regardless of foregrounds and backg...
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