MATGPR Release 3.5 is now available for distribution, with several new features and capabilities. matGPR is Copyright© of Andreas Tzanis, 2005, 2008, 2010, 2013, 2016. All rights reserved. 1. Support for GSSI (DZT) SIR-4000 16/32 bit data. 2. Support for Mala Geophysics RD7 32 bit data. 3. Support for SEG-Y Revision 0 integer 16-bit and 32-bit data storage formats. 4. Option to assimilate topography into 1-D or 2-D depth migrated data in the context menu of the “Processed Data” panel. 5. Option to compute and display the maximum, minimum, Most Positive and Most Negative Curvature Attributes in the "View" drop-down menu. 6. Importation/replacement of marker trace (positioning) information from a disk file; this allows preparation of positioning (marker) data independently of the built-in matGPR marker editing utilities but, more importantly facilitates introduction of updated/more accurate information so as to reposition the traces. 7. Enhanced batch processing capability with inclusion of: - 1-D Migration (with choice between F-K or Phase-shifting methods). - 1-D Time-to-Depth Conversion. 8. New advanced analytical tools have been implemented for scale-sensitive denoising and for the retrieval of scale-and-orientation-dependent information; these are based on directional and multi-directional wavelet filters and the curvelet transform. 9. 1-D Depth Migration with option to include topography. 10. Several algorithmic improvements and minor bug fixes. CHANGES IN DISTIBUTION POLICY There are two versions of MATGPR R3: the CLASSIC and the COMPILED STAND-ALONE version. The following paragraphs concern the CLASSIC version, of which there are ALSO TWO EDITIONS: > MATGPR RELEASE 3.1 is an upgraded version of Release 3 (includes some coding improvements and enhanced data input capabilities). Until a decision is made as to the opposite, this version will continue to be freely distributed and licensed for education and research. > MATGPR RELEASE 3.5 includes all the improvements of Release 3.1, as well as a number of new processing and analysis applications (curvature attributes, robust spline smoothing, topographic compensation of depth-migrated data etc.). This edition, as well as future upgrades can be availa-ble only upon request, e.g. by e-mail. Release 3.5 will be offered (licensed) for use in a single computer system. Moreover, a donation toward the continued development of matGPR is ENCOURAGED! In order to install and use the Classic matGPR, prospective users (Licensees) must agree to be bound by the terms and conditions specified in the End User License Agreements applicable to Release 3.1 or Release 3.5 respectively, which are attached to the corresponding distribution bundles. The terms of these Agreements can be summarized as follows: 1) Licensees are granted permission to install Release R3.1 in one or more computer systems. 2) Licensees are granted permission to install Release R3.5 in a single computer system identifiable to matGPR by its Media Access Control address (MAC address). 3) Licensees is granted permission to expand matGPR by strictly adhering to the procedures specified in Section 2.6 of the "matGPR Manual and Techical Reference", titled “Expanding matGPR: How to write customized modules”. 4) Licenses are revocable, non-exclusive and non-transferable. With the sole exception specified in Caluse 3 above, Licensees will not, and will not permit others to decrypt, reverse-engineer, disas-semble, otherwise modify or reduce, re-package, license, sell, rent, lease, distribute, transmit, host, outsource or disclose matGPR under any circumstances. 5) The Classic matGPR is provided in the hope that it will be useful, but without any warranty; with-out even the implied warranty of merchantability or fitness for a particular purpose and without guarantees or warranties regarding its accuracy, safety, or any other quality or characteristic. 6) Under no circumstances shall the Author and Copyright holder of the Classic matGPR (Licensor) be liable for any indirect, incidental, consequential, special or exemplary damages arising out of, or in connection to a Licensee’s use of, or inability to use matGPR. 7) The the Author of matGPR (Licensor) reserves the right to revoke a license and terminate the License Agreement in his sole discretion, at any time and for any or no reason. 8) The License Agreement will terminate immediately, without prior notice, in the event that Licensees fail to comply with any of its provisions. Licensees may also terminate the Agreement by uninstalling/deleting matGPR. Upon termination of the Agreement, Licensees shall cease all use, uninstall matGPR and delete all copies of matGPR in their possession. 9) The Classic matGPR is provided as is and without technical support or tutoring, except for Licen-sees who have made a voluntary monetary donation toward its development (see below). 10) Reports of bugs or errors will be examined and corrections, if any, will be communicated to the Licensee who reported the error. 11) In publications, reference to matGPR must be given, using one or all of the following: a. Tzanis, A. and Kafetsis, G., 2004. A freeware package for the analysis and interpretation of common-offset Ground Probing Radar data, based on general purpose computing engines, Bulletin Geol. Soc. Greece, vol. 36, No 3, 1347-1354. b. Tzanis, A., 2010. matGPR Release 2: A freeware MATLAB® package for the analysis & in-terpretation of common and single offset GPR data, FastTimes, 15 (1), 17 – 43. > ACCESSIBILITY OF SOURCE CODE: 1) All editions of the Classic matGPR Release 3 and later are distributed in opaque (encrypted) p-code form, except for a limited number of third-party public domain functions and sub-programs that will continue to be distributed in transparent (readable) m-code form according to the specifications of their Authors and Copyright Holders. 2) Transparent m-code might be released for research, after consultation with the Author. This would generally be done on a reciprocal basis (e.g. exchange of code, collaborative research etc.). 3) Postgraduate students wishing to negotiate the release of m-code are required to provide, (a) evidence of their status, e.g. in the form of a letter by their supervisor, and, (b) a plan for the required reciprocal action. Requests by prospective users with e-mail accounts not belonging to accredited academic institutions will not be considered! > DONATIONS Most users should appreciate the amount of time, effort and resources invested in producing a program like matGPR. If you use the classic matGPR (R3.1 and earlier) and find it useful, you might consider making a donation. If you would like to use matGPR R3.5 and later, a voluntary donation towards its continued development is STRONGLY ENCOURAGED. This is particularly relevant in case you are going to use it for profit! I am sure that everyone can understand how in times of economic turmoil, with research grants decimated, donations can be of great assistance in keeping research alive and ensuring the continued availability of matGPR. -> Donations render Licensees eligible for technical support, commensurable in material and temporal extent to the generosity of the donation. For example, a donation in the middle 2-digit Euro range will render a user eligible for short-term technical support. A generous donation, (e.g. in the middle 3-digit Euro range) will render a user eligible for long-term support. -> If you are not prepared to make a donation, I kindly request that you refrain from asking. -> Support will definitely be provided when you report bugs or errors. In this case the response will be prompt but will be limited to the specific bug or error! FINALLY AND IMPORTANTLY, ANY FEEDBACK, IDEAS AND POINTERS TOWARDS IMPROVING MATGPR WILL BE GREATLY APPRECIATED AND COMMENSURABLY RECIPROCATED. Athens, 8 April 2016.