This paper concerns the intraframe coding of pictures. Conventionally the predictive coding methods use a two dimensional linear predictor which is based on the autoregressive model of the picture. This paper proposes two versions of a twodimensional lattice algorithm for linear prediction. This algorithm is arrived at by representing the forward prediction error as a function of a lower order ...

This study addresses pronominal anaphora resolution, including zero pronouns, in Chinese. A syntactic, rule-based pronoun resolution algorithm, the “Hobbs algorithm” was run on “gold standard” hand parses from the Penn Chinese Treebank. While first proposed for English, the algorithm counts for its success on two characteristics that Chinese and English have in common. Both languages are SVO, a...

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Adaptive optics (AO) has greatly improved retinal image resolution. However, even with AO, temporal and spatial variations in image quality still occur due to wavefront fluctuations, intra-frame focus shifts and other factors. As a result, aligning and averaging images can produce a mean image that has lower resolution or contrast than the best images within a sequence. To address this, we prop...

Invertible deinterlacing with variable coefficients is proposed to suppress comb-tooth artifacts caused by field interleaving of interlaced scanning video. A vertical highpass filter is applied to detect moving artifacts around boundaries of moving objects. The coefficients of a deinterlacing filter is varied depending on the motion intensity so that the deinterlacing filter may be matched tu t...

This paper proposes a novel high capacity reversible image data hiding scheme using a prediction technique which is effective for error resilience in H.264/AVC. In the proposed method, which is based on H.264/AVC intra prediction, firstly the prediction error blocks are computed and then the error values are slightly modified through shifting the prediction errors. The modified errors are used ...

In this paper, we present a new clustering method for segmentations of moving target and non-target objects. We assume that the moving target object has the following conditions: (1) object motion data continuity inter-frame, and (2) object motion data continuity intra-frame. In our model, clusters tend to form as 2lling these two conditions. The experimental results showed the e3ectiveness of ...

H.264/AVC High 4:4:4 Intra/Predictive profiles supports RGB 4:4:4 sequences for high fidelity video. RGB color planes rather than YCbCr color planes are preferred by high-fidelity video applications such as digital cinema, medical imaging, and UHDTV. Several RGB coding tools have therefore been developed to improve the coding efficiency of RGB video. In this paper, we propose a new method to ex...

Network coding is known to benefit the downlink retranmissions by the AP in a wireless LAN from exploiting overhearing at the client nodes. However, designing an efficient and practical retranmission scheme remains a challenge. We present an (asymptotically) optimal scheme, ECR, for reducing the downlink retransmissions by the AP in a wireless LAN from exploiting overhearing at the client nodes...

A new system for intraframe coding of video is described. This system combines zerotrees of vectors of wavelet coefficients and the generalized-threshold-replenishment (GTR) technique for adaptive vector quantization (AVQ). A data structure, the vector zerotree (VZT), is introduced to identify trees of insignificant vectors, i.e., those vectors of wavelet coefficients in a dyadic subband decomp...