1. What are the contributions in "Locally linear embedding methods for inter image prediction" ?
This paper introduces a natural extension of this work from spatial prediction to temporal prediction.
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Locally linear embedding methods for inter image coding
Martin Alain,Safa Cherigui,Christine Guillemot,Dominique Thoreau,Philippe Guillotel +4 more
- 01 Sep 2013
- pp 1904-1908
TL;DR: Locally Linear Embedding and Optimized Map-Aided Locally LinearEmbedding methods are adapted within H.264 in order to improve inter image prediction.
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Abstract: Image prediction methods based on data dimensionality reduction techniques have been recently introduced for still images. These techniques have been proven efficient, especially when used in a H.264 framework. This paper introduces a natural extension of this work from spatial prediction to temporal prediction. Locally Linear Embedding and Optimized Map-Aided Locally Linear Embedding methods are adapted within H.264 in order to improve inter image prediction. The resulting prediction methods are compared with the H.264 motion estimation/compensation method, template matching methods and Adaptive Interpolation Filters, and are shown to bring significant Rate-Distortion performance improvements (up to 20.21 % rate saving with respect to H.264).
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Figures
Fig. 1. Template Matching for inter prediction. 
Table 1. Encoder parameters used for simulations 
Table 2. Rate gains in % (Bjontergaard measure) with respect to H.264 for FPel and QPel accuracy 
Fig. 3. Rate-Distortion curve for a CIF crop of the City sequence 
Fig. 2. Example of A0 and AL−1 dictionaries construction from neighbors c0 and cL−1 of the patch X (oMALLE method).
Citations
Patent
Inter-image prediction method and device and corresponding coding method and apparatus
Safa Cherigui,Alain Martin,Dominique Thoreau,Philippe Guillotel,Christine Guillemot +4 more
- 13 Mar 2014
TL;DR: In this article, a method for predicting a pixel block of an image using a weighted sum of pixel blocks belonging to patches of a dictionary from a set of candidate patches was proposed.
4
Locally-Weighted Template-Matching Based Prediction for Cloud-Based Image Compression
Jean Begaint,Dominique Thoreau,Philippe Guillotel,Mehmet Turkan +3 more
- 01 Mar 2016
TL;DR: Experimental results demonstrate that the proposed approach yields significant rate-distortion performance improvements compared to current image coding solutions.
3
A modified local linear embedding algorithm based on neighbour selection
TL;DR: A modified LLE method named LLE+, through improving the similarity measure for neighbour selection is proposed, and it is proved that LLE+ has a better dimension reduction performance.
1
•Dissertation
Techniques de codage d'images basées représentations parcimonieuses de scènes et prédiction spatiale multi-patches
Safa Chérigui
- 18 Jun 2014
TL;DR: Cette these vise a explorer de nouveaux schemas de prediction spatiale afin d'ameliorer les techniques actuelles de prediction intra, en etendant ces schemas locaux et monodimensionnels a des schemas globaux, multidimensionsnels et multi-patches.
Patent
Method and device for predicting a current block of pixels in a current frame, and corresponding encoding and/or decoding methods and devices
Alain Martin,Thoreau Dominique,Guillotel Philippe,Guillemot Christine +3 more
- 05 Apr 2017
TL;DR: In this paper, a method for predicting a current block of pixels in a current frame, comprising of a first prediction of the current block, delivering a first predicted block, and updating the predicted block by implementing at least one iteration (12) of the following steps, is described.
References
Nonlinear dimensionality reduction by locally linear embedding.
Sam T. Roweis,Lawrence K. Saul +1 more
TL;DR: Locally linear embedding (LLE) is introduced, an unsupervised learning algorithm that computes low-dimensional, neighborhood-preserving embeddings of high-dimensional inputs that learns the global structure of nonlinear manifolds.
Overview of the H.264/AVC video coding standard
TL;DR: An overview of the technical features of H.264/AVC is provided, profiles and applications for the standard are described, and the history of the standardization process is outlined.
A non-local algorithm for image denoising
Antoni Buades,Bartomeu Coll,Jean-Michel Morel +2 more
- 20 Jun 2005
TL;DR: A new measure, the method noise, is proposed, to evaluate and compare the performance of digital image denoising methods, and a new algorithm, the nonlocal means (NL-means), based on a nonlocal averaging of all pixels in the image is proposed.
Overview of the H.264/AVC video coding standard
Ajay Luthra,Pankaj N. Topiwala +1 more
- 19 Nov 2003
TL;DR: An overview of H.264/MPEG-4 AVC is provided and some comparisons with the existing standards, MPEG-2 and MPEG-4 Part 2, are also provided.
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