Concept
Fractal compression
Related publications (237)
Broadband Uniform Wavelength Conversion and Time Compression of WDM Channels
Camille Sophie Brès, Mohammad Amin Shoaie
A scheme based on 2-pump OPA is proposed for uniform wavelength conversion and optimized compression. We show 4.7-fold compression over 32 nm range resulting in Gaussian pulses from sinusoidal modulation and enabling simultaneous compression of WDM channel ...
2015Visual attention in LDR and HDR images
Touradj Ebrahimi, Philippe Hanhart, Hiromi Nemoto
Recent advances in high dynamic range (HDR) capturing and display technologies attracted a lot of interest to HDR imaging. Many issues that are considered as being resolved for conventional low dynamic range (LDR) images pose new challenges in HDR context. ...
2015Rate-Distortion Evaluation for Two-Layer Coding Systems
Touradj Ebrahimi, Philippe Hanhart
The Bjontegaard model is widely used to calculate the compression efficiency between different codecs. However, this model is not sufficient to investigate the impact on quality of the interaction of the base and enhancement layer bit rates when comparing ...
2015Ultra low power design of hardware efficient CS-Based compression scheme in WBSN
David Atienza Alonso, Pierre Vandergheynst, Hossein Mamaghanian
Ultra-low power optimization is a challenging research topic in the de- sign of the sensor front-ends, especially in the area of Wireless Body Sensor Nodes (WBSN), where a limited amount of power and hardware resources are available. In this talk, I analyz ...
2014Quadtree Structured Image Approximation for Denoising and Interpolation
Adam James Scholefield, Pier Luigi Dragotti
The success of many image restoration algorithms is often due to their ability to sparsely describe the original signal. Shukla et al. proposed a compression algorithm, based on a sparse quadtree decomposition model, which could optimally represent piecewi ...
Institute of Electrical and Electronics Engineers2014Flexural deformations of URM piers: Comparison of analytical models with experiments
Despite the fact that displacement-based methods are now frequently applied when assessing the seismic performance of unreinforced masonry (URM) structures, the displacement capacity of in-plane loaded URM piers is still estimated from empirical rather tha ...
2014Real-time, high-speed video decompression using a frame- and event-based DAVIS sensor
Dynamic and active pixel vision sensors (DAVISs) are a new type of sensor that combine a frame-based intensity readout with an event-based temporal contrast readout. This paper demonstrates that these sensors inherently perform high-speed, video compressio ...
IEEE2014Performance evaluation of the emerging JPEG XT image compression standard
The upcoming JPEG XT is under development for High Dynamic Range (HDR) image compression. This standard encodes a Low Dynamic Range (LDR) version of the HDR image generated by a Tone-Mapping Operator (TMO) using the conventional JPEG coding as a base layer ...
2014Impact of Ultra High Definition on Visual Attention
Touradj Ebrahimi, Philippe Hanhart, Hiromi Nemoto
Ultra high definition (UHD) TV is rapidly replacing high definition (HD) TV but little is known of its effects on human visual attention. However, a clear understanding of this effect is important, since accurate models, evaluation methodologies, and metri ...
2014