# snaphu 1.4.2-6 source package in Ubuntu

## Changelog

snaphu (1.4.2-6) unstable; urgency=medium * Team upload. * Drop autopkgtest to test installability. (Closes: #905120) * Add lintian override for testsuite-autopkgtest-missing. -- Bas Couwenberg <email address hidden> Wed, 01 Aug 2018 19:39:31 +0200

## Upload details

- Uploaded by:
- Debian GIS Project on 2018-08-01

- Uploaded to:
- Sid

- Original maintainer:
- Debian GIS Project

- Architectures:
- any

- Section:
- misc

- Urgency:
- Medium Urgency

## See full publishing history Publishing

Series | Published | Component | Section | |
---|---|---|---|---|

Disco | release | on 2018-10-30 | multiverse | misc |

Cosmic | release | on 2018-08-02 | multiverse | misc |

## Downloads

File | Size | SHA-256 Checksum |
---|---|---|

snaphu_1.4.2-6.dsc | 1.9 KiB | 5a01dfdf8878682dbb30e217fe0823f4e9f94ba9026ac17f87f1e5b93561011d |

snaphu_1.4.2.orig.tar.gz | 135.4 KiB | ca0af86f7b3e3aba64941979e80ddb25baf7820bfdd72c0fc07e8e4a9584a67d |

snaphu_1.4.2-6.debian.tar.xz | 8.0 KiB | b1e79f22582fd01246de13548cb2bc45500859e370dd6b48c9c4bb9ca7b3ca59 |

### Available diffs

- diff from 1.4.2-5 to 1.4.2-6 (493 bytes)

No changes file available.

## Binary packages built by this source

- snaphu: Statistical-Cost, Network-Flow Algorithm for 2D Phase Unwrapping
Two-dimensional phase unwrapping is the process of recovering

unambiguous phase data from a 2-D array of phase values known only

modulo 2pi rad.

.

There are many applications, like Magnetic Resonance Imaging (MRI),

Synthetic Aperture Radar (SAR), fringe pattern analysis, tomography

and spectroscopy, which as part of their fundamental operation depend

upon the extraction of a phase signal from their input image. Usually

the phase is available in a form that suffers from 2-pi phase jumps

due to the use of the mathematical arctangent function, which produces

an inherently wrapped output. This wrapped phase is unusable until the

phase discontinuities are removed.

.

SNAPHU is an implementation of the Statistical-cost, Network-flow

Algorithm for Phase Unwrapping particularly suitable for SAR

interferometry applications. This algorithm poses phase unwrapping as

a maximum a posteriori probability (MAP) estimation problem, the

objective of which is to compute the most likely unwrapped solution

given the observable input data. Because the statistics relating the

input data to the solution depend on the measured quantity, SNAPHU

incorporates three built-in statistical models, for topography data,

deformation data, and smooth generic data. The posed optimization

problem is solved approximately with use of network-flow techniques.

.

As SNAPHU uses an iterative optimization procedure, its execution time

depends on the difficulty of the interferogram. In single-tile mode

the required memory is on the order of 100 MB per 1,000,000 pixels in

the input interferogram.

- snaphu-dbgsym: debug symbols for snaphu