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The H.264/AVC intra-frame codec is widely used to compress image/video data for applications like Digital Still Camera (DSC), Digital Video Camera (DVC), Television Studio Broadcast, and Surveillance video. Intra-prediction is one of the top 3 compute-intensive processing functions in the H.264/AVC baseline decoder and, therefore, consumes significant number of compute cycles a processor. In this...
For mobile video applications, the required storage and bandwidth of frame memory play crucial roles. Reducing the accesses and the size of frame memory can decrease area and cost, as well as power consumption. Current video-coding standards can reach high compression efficiency but demand large volumes of computations and storage requirements. Hence, it is hard for these coding standards to be embedded...
We propose a novel hardware design for decoding compressed floating-point textures in a graphics processing unit (GPU). Our decoder is based on the NXR texture format, which provides lossy, fixed-rate 6:1 compression for floating-point textures. Our design exploits the constraints of the compressed pixel blocks to produce the correct output using only fixed-point arithmetic. This results in significantly...
To reduce the bandwidth requirement and the size of frame memory for video decoding, embedding a compressor/decompressor on the chip is a well-known solution. Video compression has been developed for a long time and numbers of algorithm have been proposed. Those algorithms show us that enhancing the complexity can reach better performance. However, algorithm with higher complexity is more difficult...
The proliferation of the digitized media introduces an exigent problem of security in multimedia data transmission in the network surroundings. Consequently, digital watermark technique needs to be incorporated in a digital rights management framework to address different aspects of the content management. The objective is to develop low power, real time, reliable and secure data hiding system that...
The explosion of the digitized media introduces a demanding problem of security in multimedia data communication in the network environment. Accordingly, digital watermarking technique needs to be integrated in a digital rights management framework to address different features of the content management. The purpose is to build up low power, real time, reliable and secure data hiding system that can...
This paper presents a novel method of reference frame compression for use in H.264/AVC video codecs. The method comprises a predictive pattern decision for encoding of original 2times2 pixel blocks, selective step quantization and fast reconstruction of embedded patterns during the decoding. The proposed approach has a number of advantages over existing methods, such as random access to compressed...
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