For the problems of low decoding accuracy, long decoding time, and low quality of decoded video image in the traditional lossless decoding method of compressed coded video, a lossless decoding method of compressed cod...
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For the problems of low decoding accuracy, long decoding time, and low quality of decoded video image in the traditional lossless decoding method of compressed coded video, a lossless decoding method of compressed coded video based on inter frame difference background model is proposed. At the coding end, the inter frame difference background model is used to extract the single frame video image, and the mixed coding method is used to compress the video losslessly. At the decoding side, the CS-SOMP (compressive sensing-synchronous orthogonal matching pursuit algorithm) joint reconstruction algorithm is composed of synchronous orthogonal matching pursuit algorithm (SOMP) and K-SVD (kernel singular value decomposition) algorithm to losslessly decode the compressed encoded video. The simulation results show that the lossless decoding method based on the inter frame difference background model has higher accuracy, shorter decoding time, and ensures the quality of the decoded video image.
In this paper, we designed a progressive compression transmission system for 3D models in order to solve the transmission limitation caused by the large data volume of the 3D models. The system built on the basis of a...
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ISBN:
(纸本)9781450387811
In this paper, we designed a progressive compression transmission system for 3D models in order to solve the transmission limitation caused by the large data volume of the 3D models. The system built on the basis of an improved quadratic error measurement algorithm based on triangle strips. The system is implemented based on C ++ and OpenGL, using TCP / IP transmission protocol and C / S mode. The system preprocesses the model by storing the progressive transfer hierarchy model file locally. The transmission process uses the DEFLATE algorithm to compress the data, thereby the system can reduce the amount of transmitted data and improving the transmission and display speed of the model. The local model is stored by blind watermarking, the client can only browse and interact with the model. In order to prevent the misappropriation of 3D models, users cannot download the models. The system solves the problems of slow transmission and long display time of 3D models. Experiments prove the effectiveness of this system.
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