Related Experiment Video
Updated: Jun 4, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
Published on: July 19, 2016
Stationary probability model for bitplane image coding through local average of wavelet coefficients
1Department of Information and Communications Engineering, Universitat Autònoma de Barcelona, Bellaterra, Spain. fauli@deic.uab.es
Abstract:
This paper introduces a probability model for symbols emitted by bitplane image coding engines, which is conceived from a precise characterization of the signal produced by a wavelet transform. Main insights behind the proposed model are the estimation of the magnitude of wavelet coefficients as the arithmetic mean of its neighbors' magnitude (the so-called local average), and the assumption that emitted bits are under-complete representations of the underlying signal. The local average-based probability model is introduced in the framework of JPEG2000. While the resulting system is not JPEG2000 compatible, it preserves all features of the standard. Practical benefits of our model are enhanced coding efficiency, more opportunities for parallelism, and improved spatial scalability.
Related Concept Videos
Linear Approximation in Frequency Domain
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear.
Linear Approximation in Time Domain
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length, the...
Extraction: Partition and Distribution Coefficients
For extracting a solute from an aqueous phase into an organic...
Intensity Of Electromagnetic Waves
Poisson Probability Distribution
The...
Plane Electromagnetic Waves I
The EM field is assumed to be a...