Implementation of Hybrid Dct/dpcm Video-encoder in the Dm642 Evm for Educational Purposes
نویسندگان
چکیده
There is presented implementation of hybrid DCT/DPCM video-encoder in the powerful TI’s media processor TMS320DM642 embed in evaluation module DM642 EVM. Code Composer Studio 3 is used as working space. Videoencoder is implemented with use of C code so it is easily understandable. The easiness is very important because the implemented video-encoder will be used for educational purposes. The structure of the encoder is lightly recognizable for students frequenting the courses Analog and Digital Television, Digital Image Processing and Encoding so some routines could be lightly modified.
منابع مشابه
Shape-VQ-based lossless hybrid ADPCM/DCT coder
The discrete cosine transform (DCT) has been shown as an optimum encoder for sharp edges in an image (Andrew and Ogunbona, 1997). A conventional lossless coder employing differential pulse code modulation (DPCM) suffers from significant deficiencies in regions of discontinuity, because the simple model cannot capture the edge information. This problem can be partially solved by partitioning the...
متن کاملMotion Compensation on DCT Domain
Alternative fully DCT-based video codec architectures have been proposed in the past to address the shortcomings of the conventional hybrid motion compensated DCT video codec structures traditionally chosen as the basis of implementation of standardcompliant codecs. However, no prior effort has been made to ensure interoperability of these two drastically different architectures so that fully D...
متن کاملContext-Aware Fast 3D DCT/IDCT Algorithm for Low- power Video Codec in Mobile Embedded Systems
A context-aware fast algorithm for 3D DCT/ IDCT video coding is presented in the paper. Compared to state-of-art MPEGx/H.26x hybrid schemes the new algorithm is suited for low-power video codec in mobile embedded systems. 1. 3D DCT for Low-power Video Codecs The 2D-DCT is a powerful tool for reducing the spatial information redundancy in 2D images: intraframe coding of still images and videos i...
متن کاملA survey of hybrid MC/DPCM/DCT video coding distortions
The motion-compensated hybrid DCT/DPCM algorithm has been successfully adopted in various video coding standards, such as H.261, H.263, MPEG-1 and MPEG-2. However, its robustness is challenged in the face of an inadequate bit allocation, either globally for the whole video sequence, or locally as a result of an inappropriate distribution of the available bits. In either of these situations, the...
متن کاملNeuro-Fuzzy Modeling and Prediction of VBR MPEG Video Sources
T he work presented in this paper intends to apply neuro-fuzzy methods for the modeling and prediction on trac intensity of digital video sources which are coded with hybrid Motion Compensation/Dierential Pulse Code Modulation/Discrete Cosine Transform (MC/DPCM/DCT) algorithm. Although current coding standards recommend constant bit rate (CBR) output by means of a smoothing buer, the hybrid ...
متن کامل