Package: wnpp Severity: wishlist Owner: Antonio Valentino <antonio.valent...@tiscali.it>
* Package name : snaphu Version : 1.4.2 Upstream Author : Curtis W. Chen * URL : http://www-star.stanford.edu/sar_group/snaphu * License : non-free (free for non-commercial applications) Programming Lang: C Description : Statistical-Cost, Netowrk-Flow Algorithm for 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. SNAPHU is an implementation of the Statistical-cost, Network-flow Algorithm for Phase Unwrapping proposed by Chen and Zebker. 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. SNAPHU always produces complete unwrapped solutions, and, in our tests, its accuracy is comparable to or better than that of other available algorithms. 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. The software is written in C and should run on most Unix/Linux platforms. It is freely available to the public, subject to the conditions outlined in the README file included with the distribution. -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20101212173347.3676.78383.report...@localhost6.localdomain6
