JPEG2000 Compliant Lossless Coding of Floating Point Data

2005 ◽  
Author(s):  
B. Usevitch
Keyword(s):  
Floating Point ◽  
Lossless Coding ◽  
Point Data

Compression of Barotropic Turbulence Simulation Data Using Wavelet-Based Lossy Coding

2002 ◽  
Author(s):  
John P. Wilson
Keyword(s):  
Evaluation Criteria ◽  
Floating Point ◽  
Simulation Data ◽  
Single Precision ◽  
Acceptable Error ◽  
Turbulence Simulation ◽  
Lossy Coding ◽  
Point Data ◽  
Definition Of ◽  
Quantities Of Interest

Single-precision floating point data from a simulation of barotropic turbulence is compressed with a wavelet-based method. The quantity being compressed is vorticity. The compression error is evaluated both in terms of error in the vorticity and the error in various quantities derived from the vorticity. Numerical error is evaluated in all quantities and visualizations of the vorticity and correlation of the error with the uncompressed data are evaluated. It is found that depending on the quantities of interest and the evaluation criteria, compression ratios of 4:1 to 256:1 are achievable. Under a conservative definition of acceptable error, it is possible to recover quantities of interest from data compressed 4:1 (8bpp), the data rate that in existing practice is used for visualization.

Efficient Multibyte Floating Point Data Formats Using Vectorization

2017 ◽  
Vol 66 (12) ◽  
pp. 2081-2096 ◽  
Author(s):  
Andrew Anderson ◽  
Servesh Muralidharan ◽  
David Gregg
Keyword(s):  
Floating Point ◽  
Data Formats ◽  
Point Data
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