[PDF] Top 20 ENHANCEMENT OF IMAGE QUALITY FOR LOW BIT RATE VIDEO CODING

... Methods studied include reducing the quantizer step size, randomized scanning of the macroblocks, and/or nonuniform quantization of the transform coefficients.. INTROD[r] ... See full document

... most of surveil- lance systems adopts the low resolution format to record the video ...the low resolution image quality often results the interested object too vague to be ...and ... See full document

... SYSTEMS FOR VIDEO TECHNOLOGY, ...Perceptual quality for Frame 81 of the QCIF Stefan sequence encoded at 44 Kbit/sec, 10 ...consisting of an original and a com- pressed sequence, ... See full document

... Instead of block-based coding, we adopt a n object-oriented approach, which first calculates the motion vector of each pixel using a modified optical flow approach, then s[r] ... See full document

... In addition, the shape informa- tion must be transmitted because the kernels are orthonor- malized according t o the shape of the coded region; the decoder can recover t [r] ... See full document

... In terms of bit-rate, the average bit-rate decreases as the size of codebook increases be- cause lots of IPP’s can be found in the cache codebook and index of “hit” I P P[r] ... See full document

... (WD1.0) of SVC 3 , each successively quantized refinement layer is coded by a subband coding scheme to provide fine granular SNR ...the coding is performed in a refinement layer. The coding ... See full document

... reduction of residual im- ages and the correctness of obtained motion ...state-of-the-art video coding standards support variable block sizes, ...motions for individual 8×8 and ... See full document

... Guided Bit Allocation for Video Coding Chih-Wei Tang, Ching-Ho Chen, Ya-Hui Yu, and Chun-Jen Tsai Abstract—A video bit allocation technique adopting a visual distortion ... See full document

... Optimal Bit Allocation for Coding of Video Signals over ATM Networks Jiann-Jone Chen and David ...encoding of video sequences for ATM ...the video units are ... See full document

... Comparison of visual quality 6: CONCLUSION In this paper, we proposed a video analyzer to determine visual attention regions and a video adapter to dynamically adjust bitstream in accordance ... See full document

... Compared with oth- er motion estimation algorithms, MOFA gives accurate motion field and its performance is efficient for video coding or image understanding.. Because [r] ... See full document

... efficient rate control algorithm for a ...H.264/AVC video encoder. Through rate control model analy- sis, an adjustment equation is constructed, based on a statistical ...accuracy of the ... See full document

... advantages of no error propagation and quality ...lengths of the compressed data result in irreducible frame-memory ...suitable for frame compression because their primary purpose is to ... See full document

... goal of producing consistent quality videos, minimizing the total distortion and meeting the bit budget ...consistent quality solution. Inspired by the previous work, a trellis-based ... See full document

... layer bit allocation scheme tries to allocate the appropriate bit budget to the current ...appropriate bit budgets for non-target and target regions are estimated and ...the bit budget, ... See full document

... account for target ...computation of FSBMA with acceptable video quality ...challenges of architecture design for fast BMAs include unpredictable data flow, irregular memory ... See full document

... macroblock-layer rate control schemes in the literature calculates quantization parameters of all macroblocks (MB) in a frame in a raster scan order, and then encodes the MBs in the same ...the ... See full document

... stochastic bit-reshuf- fling (SBR) scheme. Instead of using the uniform distribution in [6], we model transform coefficients with discrete Laplacian distributions, which are derived from maximum likelihood ... See full document

... method for image ...performance of EZW ...zerotree coding (EZC), is based on two new techniques: adaptive multi-subband decomposition (AMSD) and band #ag scheme ...purpose of AMSD is to ... See full document