Quality Video Enhancement by improvement of Variable Length Coding Block for MPEG-4

سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 898

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شناسه ملی سند علمی:

ICS12_266

تاریخ نمایه سازی: 11 مرداد 1393

چکیده مقاله:

Progress of technology in recent decades causes that video transmission via communication channels has met high demands. Therefore, several methods have been proposed toimprove the quality of video under channel errors. The aim of this paper is to increase PSNR for synthesized video byincreasing channel encoder rate but in constant transmission rate. This is achieved by using intelligent neural network and Huffman coding in VLC blocks used in the MPEG standard tocompress transmitted data significantly. Then, depending to the amount of compression by the proposed method, the compresseddata is coded again using secondary channel encoder. The proposed method is able to increase channel coding rate withoutincreasing the amount of information for each frame. This method provides more robustness for video frames against channel errors. The proposed method is tested for differentsource coding rates and several SNRs for channel and the obtained results are compared with a new method named Farooq method.

کلیدواژه ها:

video coding ، variable length coding (VLC) ، Huffman coding ، artificial neural network component

نویسندگان

Hassan Farsi

Department of Electronics and Communications Eng University of Birjand Birjand, Iran

Pouriya Etezadifar

Department of Electronics and Communications Eng University of Birjand Birjand, Iran