A reliable quality measurement is a much needed tool for determining the type and amount of image distortion for the embedded zero tree wavelet image coding based on perceptual techniques. Attempts to improve quality measurement include incorporation of simple models of the human visual system (HVS) and multi-dimensional tool design, it is essential to adapt perceptually based metrics which obj...

Feature coding and pooling are two critical stages in the widely used Bag-of-Features (BOF) framework in image classification. After coding, each local feature formulates its representation by the visual codewords. However, the two-dimensional feature-code layout is transformed to a one-dimensional codeword representation after pooling. The property for each local feature is ignored and the who...

The wavelet transform provides a multiresolution representation of images. Edges, which are visually important, produce large coeecients across several scales in the wavelet transform domain. By tracking and predicting these edge coeecients across scales in the wavelet transform domain, we can greatly improve the compressed image quality with little degradation in compression ratio. This paper ...

A model of recognition is described based on cell properties in the ventral cortical stream of visual processing in the primate brain. At a critical intermediate stage in this system, 'Elaborate' feature sensitive cells respond selectively to visual features in a way that depends on size (+/- 1 octave), orientation (+/- 45 degrees) but does not depend on position within central vision (+/- 5 de...

The visual quality of compressed images and video is Low bit rate image/video coding is essential for many visual generally affected by three factors: data source, coding bit communication applications. When bit rates become low, most rates, and compression algorithms. For a given comprescompression algorithms yield visually annoying artifacts that sion method, more information (motion or spati...

this paper we present an image sequence coding scheme for very low bit rate coding which is based on spatial redundancy reduction via the new edge sensitive subband coding method and temporal redundancy reduction via windowed overlapped block-matching motion compensation. The scheme has the main advantage , that only the signiicant regions of diierence-images are coded. Thus the computational c...

Perceptual image and video coders have been reported extensively in the literature with a recent survey listing sixteen representative PVCs (perceptual video coders) for single-view video coding, ten of which conform to H.263, MPEG-4 or H.264/AVC international standard. Successful approaches to perceptual picture coding are classified as perceptual predictive coding, perceptual quantization, ra...

this paper we present an image sequence coding scheme for very low bit rate coding which is based on spatial redundancy reduction via the new edge sensitive subband coding method and temporal redundancy reduction via windowed overlapped block-matching motion compensation. The scheme has the main advantage , that only the signiicant regions of diierence-images are coded. Thus the computational c...

Simple cells in primary visual cortex were famously found to respond to low-level image components such as edges. Sparse coding and independent component analysis (ICA) emerged as the standard computational models for simple cell coding because they linked their receptive fields to the statistics of visual stimuli. However, a salient feature of image statistics, occlusions of image components, ...