Fast Reconstruction of Subband Decomposed Signals for Progressive Transmission
نویسندگان
چکیده
In this paper we propose a fast reconstruction method for a progressive subband-decomposed signal coding system. It is shown that unlike the normal approach which contains a xed computational complexity, the computational complexity of the proposed approach is proportional to the number of reened coeecients. Therefore, using the proposed approach in image coding applications, we can update the image after receiving each new coeecient and create a continuously reened perception. This can be done without any extra computational cost compared to the normal case where the image is reconstructed after receiving a predeened number of bits.
منابع مشابه
Fast reconstruction of subband-decomposed progressively transmitted signals
We propose a fast reconstruction method for a subband-decomposed, progressive signal coding system. We show that unlike the conventional approach which requires a fixed computational complexity, the computational complexity of the proposed approach is proportional to the number of refined coefficients at each level of progression. Therefore, unrefined coefficients do not add to the computationa...
متن کاملFast Reconstruction of Subband - DecomposedProgressively - Transmitted
We propose a fast reconstruction method for a subband-decomposed, progressive signal coding system. We show that unlike the conventional approach which requires a xed computational complexity, the computational complexity of the proposed approach is proportional to the number of reened coeecients at each level of progression. Therefore, unreened coeecients do not add to the computational comple...
متن کاملSimple and Fast Subband De-blocking Technique by Discarding the High Band Signals
In this paper, we propose a simple and fast post-processing deblocking technique to reduce blocking artifacts. The block-based coded image is first decomposed into several subbands. Only the low frequency subband signals are retained and the high frequency subband signals are discarded. The remaining subband signals are then reconstructed to obtain a less blocky image. The ideas are demonstrate...
متن کاملThe application of nonlinear filter banks to efficient rendering and progressive transmission of light fields
This paper studies the application of perfect reconstruction nonlinear filter banks (NFB) to the efficient rendering and progressive transmission of light fields. The reference pictures in the conventional disparity-compensated prediction encoder is decomposed using the NFB to reduce the amount of main memory needed to support fast rendering. The NFB has very low arithmetic complexity for recon...
متن کاملPerfect reconstruction filter banks for HDTV representation and coding
Subband decomposition of HDTV signals is important both for representation purposes (to create compatible subchannels) and for coding (several proposed compression schemes include some subband division). We first review perfect reconstruction filter banks in multiple dimensions in the context of arbitrary sampling patterns. Then we concentrate on the special case of quincunx subsampling and der...
متن کامل