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TOPIC: SS3D, SL3, Multibeam survey postprocessing

SS3D, SL3, Multibeam survey postprocessing 3 months 2 weeks ago #11451

  • DannyGeysen
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Hi Anton76,

Could you provide me an email address?
Lowrance ProStaff
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SS3D, SL3, Multibeam survey postprocessing 3 months 2 weeks ago #11452

  • Anton76
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Sure.
Last Edit: 3 months 2 weeks ago by Anton76.
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11466

  • lashilashi
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Anton76 wrote:
Hi NVC.

Have just tried low2ozi - it works and shows the depth graph but the output file (.WPT) has only one string while the source SL3-file is rather big (~60 MB). What I am doing wrong?

I too was trying to get the low2ozi software to work, and I tried quite a few things, and I even translated the instructions from the Cyrllic (at the bottom of this message, since you need to change your windows settings to see even in Russian!). My conclusion is that the saving procedure isn't working properly in windows 10. I tried running it with compatibility modes to no avail. Playing around with the start and end, gives an attempted conversion to SL2 for the 3D format, which fails due to a run-time error '9': subscript out of range, due to the 3D channel not being supported in SL2. I get the WPT file, but thats just a single point when you click that N button. The other buttons just make an image. It's entirely possible that this software isn't supported for our Windows version, and that NVC has it working on their Russian version of windows?

I got it hooked up through its interface to the OziExplorer API and program as well, but that just shows the track I believe, not the 3D points.

Still no sign of a TXT, MP or PLT file.

The translated instructions:

Converter of CSV data from Low2Ozi v16 sonic depth finders,
from echograms of .sl2 / 3 format or from NMEA-logs of OpenLog format .log

general discussion thread - www.rusfishing.ru/forum/showthread.php?t=8139

* what is already working:
used only with depth data from a Downscan or Primary sensor;
depth conversion in meters, speed in kilometers;
calculation of the distance between neighboring points in meters;
correction in centimeters for depth values;
filtering points by the distance between them in meters;
filtering points by changing the depth between them in centimeters;
* that does not work as it should:
tracking of sharp coordinate shifts on level ground;
skipping erroneous 'lunges' of depths with setting in percent;
direct transfer from echograms to cards without intermediate CSV (will not be soon ...)

the output immediately 3 files: CSV (TXT), MP (only points) and PLT track for Ozi (with depth)
default folders: the last open window of Windows or where the program starts from
OpenLog saves logs with the extension .TXT, before processing, change it to .LOG

05/12/13 the simplest analyzer of 'raw' echograms of the SL2 format is screwed:
the blue line indicates the depth found by the chartplotter's own algorithm;
red - while the maximum depth in meters according to the 'from the end' echogram
the task is to eliminate 'defective' definitions and create your own depth search algorithm

animation can be paused with the '||' button and switch on further with the '>>' button;
animation can be interrupted with the 'X' button and start with an arbitrary picture;
the threshold for the difference in depth in centimeters and the delay time on the “crooked” image are adjusted;
sonar contrast is adjusted (analog of Sensitivity in SonarView);
You can save images using the '[-]' button to a BMP file (in the destination directory);
you can automatically save pictures to a BMP file (in the target directory in the 'echo' folder)

10.24.13 Api is screwed to OziExplorer:
download link www.oziexplorer3.com/oziapi/oziapi_dll.zip
(copy the OziAPI.dll file to the program folder or to the Windows system directory)
it is possible to save the selected points with a relief or fish with the '/ \ /' and '>)>' buttons;
You can display points and tracks on the map in Ozi in the processing mode of the SL2 file;
You can display the current position in Ozi in the processing mode of the CSV file;
you can reduce the program window with the button '<<<' minimize / expand settings;
Added output to the chart of the current speed recorded in the echogram

02.24.14 added processing of logs from OpenLog:
only NMEA lines of $ GPGGA and $ SDDBT are read, the current time is not indicated;
Added the ability to round the found depth to decimeters;
Added ability to read and process data from Primary echograms

11/29/15 redone output scale depending on the type of sensor;
added test ability to create SI pie charts (did not take off ...)

02/13/16 removed the comparison of depth with the calculated on two SI channels;
Search for a recording algorithm for SL3 format started (sample from HDS Gen3)

05/25/16 added test trimming of SL2 echograms to a new file:
only the selected channel with optional zeroing of coordinates is saved;
rewritten algorithm from sequential file reading to byte array

06/15/16 added reading and cropping of SL3 echograms to a new SL2 file;
echogram format SL3 parsed by 60% with the exception of displaying a 3D channel;
when trimming large files, the limit is 200MB per resulting file

10/30/16 added reading channel D3 of sonograms SL3:
while a fixed depth of 20m and a side scan width of 128m;
arrows indicate the value of the Track (where the boat actually moves)
and Course (where the nose of the sonar sensor looks), if there is such data in the log

11/08/16 the program was translated into English;
the fixed depth on 3D at 20m remains, and the width is displayed real;
added ability to overwrite track data values ​​in the log
Course values, if there is such data in the log

10/22/18 limited support for the sl3v1 format is added,
from new instrument firmware with support for FishReveal;
such echograms are correctly converted to sl2 format


depth search algorithm is very crude, please do not kick ...
if there is constant mismatch and beeping increase the value
in the field 'Threshold of the difference in the calculated depth, cm' to values ​​in meters (500 and more)
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11468

  • nvc
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Anton76 wrote:
I would highly appreciate if you could convert to .CSV this log file (or just a part of it) - drive.google.com/file/d/1vdYJVNdIApvL6-G...xxe/view?usp=sharing
Thank you in advance. Really want to estimate whether this point cloud might be useful for practical purposes.

Файл похоже битый
удалось обработать только малую часть. yadi.sk/d/es2rW0u-XrADmQ
Может что то еще есть присылайте посмотрим
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11469

  • Anton76
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Файл в порядке - v21 всё сконвертила.
File is ok. v21 has converted it succesfully.
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11471

  • nvc
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Речь о канале куда пишется 3D
Возможно у вас настройки записи SL3 другие
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11472

  • Anton76
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Here is the result - cloud.mail.ru/public/4q9W/5bJu3GYf6
All the 3D data seems to be ok.
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11473

  • nvc
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Anton76 wrote:
Here is the result - cloud.mail.ru/public/4q9W/5bJu3GYf6
All the 3D data seems to be ok.

Отлично!
Расскажите каким методом получили данные 3D?
Что скажите от полученного материала?

Увидел что у вас развертка не перпендикулярно курсу, в конвертере что я использую по дефолту используется COG но и также может быть использован истинный курс компаса HDT/HDG.

Для съемки подобным методом нужно отказаться от традиционных галсов
к тому же девайс не имеет компенсации динамических перемещений (MRU)
это решение более менее способно промерять береговую линию, в идеале в хорошую погоду и с одной стороной развертки.
были тесты записывали показания крена, дифферента от Point-1 и применяли их в специализированном ПО типа SonarWiz, hypack, qinsy.
Но Фигня это все! много гемора не всем доступно!
На форуме русфишинга все обсуждается
Last Edit: 2 months 3 weeks ago by nvc.
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11474

  • Anton76
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Давайте переместимся в email? Всё-таки это англоязычный форум..
Last Edit: 2 months 3 weeks ago by Anton76.
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SS3D, SL3, Multibeam survey postprocessing 2 months 3 weeks ago #11476

  • lashilashi
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nvc wrote:
YAR wrote:
Very interesting...would you be willing to explain how you are extracting the point cloud data from the .SL3. Sonarwiz is the only software that I have found that is advertising the data extraction.
www.sorvik.ru/programmy Program converter from SL3, the same description of the format Sl3

Hi NVC, I'd also like to be able to use this low2ozi software. Any guidance to get it to output the correct files after processing an SL3 file would be greatly appreciated.
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SS3D, SL3, Multibeam survey postprocessing 2 months 2 weeks ago #11479

  • nvc
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contact the low2ozi developer and you will be happy
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