In the last years many new concepts appeared for the system design, with the called HW/SW co-design based on System (SoC) and virtual components. Those concepts rely to methodologies that try to integrate HW and SW de...
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ISBN:
(纸本)0780386566
In the last years many new concepts appeared for the system design, with the called HW/SW co-design based on System (SoC) and virtual components. Those concepts rely to methodologies that try to integrate HW and SW design techniques in just one consistent system-level methodoloy allowing to work in a way that is more secure (specifications and developments are verifiable), more efficient (cost analysable) and can be automated (through systems synthesis). A mpeg demonstrator based on video compression has been designed and validated. It implements video coding using the standard ISO/IEC 13818-2 vertical bar ITU-T H.262H (also know as "mpeg2 Video"), for the Main Profile and Main Level (720x480. 30fps). The encoder implements frames I or I-pictures. It has been developed a mpeg compressor based on DCT (Discrete Cosinus Transform) through two different methodologies. First one, it is based in Matlab DSP Builder from Altera that is a down up methodology, based on component instantiation. And the other, it is a top down methodology based on behavioural SystemC description and synthesized with SystemC behavioural Compiler from synopsys.
Reversible watermarking completely removes the watermark and exactly recovers the original content. This paper proposes a novel technique for hiding the secret data into videos by using reversible data hiding. Extract...
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ISBN:
(纸本)9781467357869;9781467357876
Reversible watermarking completely removes the watermark and exactly recovers the original content. This paper proposes a novel technique for hiding the secret data into videos by using reversible data hiding. Extracting the feature values of sequence of images from videos and embedding the secret message bits and then combining the feature values of images to form videos. Two types of transformations are used to hide and extract the data. This ensures the high security. This embedding technique produces the low distortion videos than the classical techniques because instead of embedding the secret data into the current pixel, we can split and embed it into all the four taken pixels. It ensures that the Mean Square Error (MSE) can be reduced.
Time needed to set-up and send new products to the market is a crucial factor for success, so one important rule is to develop your product as quickly as you can. In the electronics world the systems normally contain ...
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ISBN:
(纸本)0780386620
Time needed to set-up and send new products to the market is a crucial factor for success, so one important rule is to develop your product as quickly as you can. In the electronics world the systems normally contain some parts in HW and others in SW being the HW/SW partition a crucial issue in the cost-performance trade-off. A bad choice usually requires the redesign or remaps of some parts the system with the consequent waste of time and money. In the last years many new concepts appeared for the design of systems, with the called HW/SW co-design based on System (SoC) and virtual components. Those concepts rely to methodologies that try to integrate HW and SW design techniques in just one consistent system level methodology allowing to work in a way that is more secure (specifications and developments are verifiable), more efficient (cost analysable) and that can be automated (through systems synthesis). Demonstrator based mpeg video compression has been designed and validated. It implements video coding using the standard ISO/IEC 13818-2 1 ITU-T H.262H (also know as "mpeg2 Video"), for the Main Profile at Main Level (720x480, 30fps). The encoder implements frames I or I-pictures.
Variable bit rate (VBR) video is currently by far the most interesting and challenging real-time application. A VBR encoder attempts to keep the quality of video output constant and at the same time reduces bandwidth ...
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