# MAJA **URL:** https://forum.orfeo-toolbox.org/c/otb-chains/maja/10.md [Latest](https://forum.orfeo-toolbox.org/latest.md) · [Categories](https://forum.orfeo-toolbox.org/categories.md) --- ## [About the MAJA category](https://forum.orfeo-toolbox.org/t/about-the-maja-category/940)
**Author:** [@julienosman](https://forum.orfeo-toolbox.org/u/julienosman)\ **Replies:** 0
MAJA, a cloud screening and atmospheric correction software. --- ## [Issue with starting MAJA on Ubuntu 24.04](https://forum.orfeo-toolbox.org/t/issue-with-starting-maja-on-ubuntu-24-04/3397)
**Author:** [@CAlleaume](https://forum.orfeo-toolbox.org/u/CAlleaume)\ **Replies:** 31\ **Last updated:** [November 27, 2025, 3:34pm UTC](https://forum.orfeo-toolbox.org/t/issue-with-starting-maja-on-ubuntu-24-04/3397 "2025-11-27T15:34:58Z")
Hello, I recently downloaded MAJA to to detect clouds on tiles coming from Copernicus. After sucessfully installing MAJA, starting it led to multiple issues I mostly solved. The last one I’m meeting is a status error 1. … --- ## [Sentinel 2C is there!](https://forum.orfeo-toolbox.org/t/sentinel-2c-is-there/3209)
**Author:** [@ThomasDM](https://forum.orfeo-toolbox.org/u/ThomasDM)\ **Replies:** 5\ **Last updated:** [March 13, 2025, 2:41pm UTC](https://forum.orfeo-toolbox.org/t/sentinel-2c-is-there/3209 "2025-03-13T14:41:53Z")
Hello, I’ve downloaded my first Sentinel-2C images. When can I expect an update to MAJA that will support them? Can I simply use the S2B parameters? Thank you ! --- ## [Issue in DTM creation: MG2 mask has limitroph artifacts](https://forum.orfeo-toolbox.org/t/issue-in-dtm-creation-mg2-mask-has-limitroph-artifacts/1771)
**Author:** [@Robin\_Buratti](https://forum.orfeo-toolbox.org/u/Robin_Buratti)\ **Replies:** 4\ **Last updated:** [May 27, 2024, 4:42pm UTC](https://forum.orfeo-toolbox.org/t/issue-in-dtm-creation-mg2-mask-has-limitroph-artifacts/1771 "2024-05-27T16:42:22Z")
Hi, I am using MAJA in the frame of the COPERNICUS HR-WSI project. In the frame of this project, we aim to use MAJA 4.8.0 with CAMS at a 120m coarse resolution as our atmospheric correction algorithm. To do so, we need … --- ## [Maja on Code-de since Oktober 2023](https://forum.orfeo-toolbox.org/t/maja-on-code-de-since-oktober-2023/1748)
**Author:** [@Pauline](https://forum.orfeo-toolbox.org/u/Pauline)\ **Replies:** 0\ **Last updated:** [March 27, 2024, 7:30am UTC](https://forum.orfeo-toolbox.org/t/maja-on-code-de-since-oktober-2023/1748 "2024-03-27T07:30:36Z")
Hello all, we are using the german Cloud provider Code-de for analysis of Sentinel data. Since Oktober 2023 they struggle to provide MAJA products. Do you have similar experiences on Code-de or problems with MAJA in ge… --- ## [No module named '\_bz2' error with Startmaja](https://forum.orfeo-toolbox.org/t/no-module-named-bz2-error-with-startmaja/1674)
**Author:** [@jerome-colin](https://forum.orfeo-toolbox.org/u/jerome-colin)\ **Replies:** 2\ **Last updated:** [September 25, 2023, 3:37pm UTC](https://forum.orfeo-toolbox.org/t/no-module-named-bz2-error-with-startmaja/1674 "2023-09-25T15:37:15Z")
Hi, I have compiled MAJA 4.7.1 without much problems and get ‘maja’ to run, while the ‘startmaja’ executable falls into the following error : Traceback (most recent call last): File "/home/colinj/code/MAJA\_SHARED\_FOL… --- ## [Problem with cloud(cirrus) detection](https://forum.orfeo-toolbox.org/t/problem-with-cloud-cirrus-detection/1672)
**Author:** [@YUEWONHUI](https://forum.orfeo-toolbox.org/u/YUEWONHUI)\ **Replies:** 0\ **Last updated:** [September 22, 2023, 4:14am UTC](https://forum.orfeo-toolbox.org/t/problem-with-cloud-cirrus-detection/1672 "2023-09-22T04:14:29Z")
Hello, I tried to use MAJA4.7.1 to get S2L2A. At the beginning, I tried 50TMP and 47SLD from December 2022 to January 2023, but the clear sky and snow were both identified as clouds and most of them were identified as ci… --- ## [MAJA and the new CAMS aerosols 48r1](https://forum.orfeo-toolbox.org/t/maja-and-the-new-cams-aerosols-48r1/1624)
**Author:** [@jerome-colin](https://forum.orfeo-toolbox.org/u/jerome-colin)\ **Replies:** 1\ **Last updated:** [August 2, 2023, 9:41am UTC](https://forum.orfeo-toolbox.org/t/maja-and-the-new-cams-aerosols-48r1/1624 "2023-08-02T09:41:17Z")
The Copernicus Atmospheric Monitoring Service (CAMS) is about to release a new version of its aerosol products on 27 June 2023, referred as 48r1. Their evolution has a direct impact on MAJA, and requires us to adapt the … --- ## [Multiple products on the same date](https://forum.orfeo-toolbox.org/t/multiple-products-on-the-same-date/1530)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 4\ **Last updated:** [April 4, 2023, 8:17am UTC](https://forum.orfeo-toolbox.org/t/multiple-products-on-the-same-date/1530 "2023-04-04T08:17:21Z")
Hi All, I am not sure this is the right place to ask my question but… We have an automated process downloading the sentinel products from the open api and processing them through MAJA (tiles over Wallonia/Belgium) Che… --- ## [Running Maja on Docker](https://forum.orfeo-toolbox.org/t/running-maja-on-docker/1501)
**Author:** [@alaor.bianco](https://forum.orfeo-toolbox.org/u/alaor.bianco)\ **Replies:** 4\ **Last updated:** [January 6, 2023, 3:17pm UTC](https://forum.orfeo-toolbox.org/t/running-maja-on-docker/1501 "2023-01-06T15:17:42Z")
Could someone point me on how to use Maja on Docker? I would like to use sen4x/maja:4.5.4-centos-7 but I don’t know how to configure the container and send and get data. Is there any documentation or tutorial? --- ## [Running MAJA on Sentinel-2 from build/install](https://forum.orfeo-toolbox.org/t/running-maja-on-sentinel-2-from-build-install/1480)
**Author:** [@oscarkramer](https://forum.orfeo-toolbox.org/u/oscarkramer)\ **Replies:** 13\ **Last updated:** [December 2, 2022, 2:47pm UTC](https://forum.orfeo-toolbox.org/t/running-maja-on-sentinel-2-from-build-install/1480 "2022-12-02T14:47:06Z")
I don’t see how to proceed with running MAJA on a single Sentinel-2 scene. The instructions in the repo’s README.md do not explain standalone very much. Virtually all the explanation is for running Start\_maja for time-se… --- ## [No miniLUT has been generated for this angle zone](https://forum.orfeo-toolbox.org/t/no-minilut-has-been-generated-for-this-angle-zone/1401)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 2\ **Last updated:** [July 12, 2022, 9:13am UTC](https://forum.orfeo-toolbox.org/t/no-minilut-has-been-generated-for-this-angle-zone/1401 "2022-07-12T09:13:46Z")
Hello, I get the above error for certain products while other products are working fine. What am I missing in my configuration, how can I fix it ? Below is the logging of the run generating the error Thanks $ python… --- ## [Wrong computation of invalid zones](https://forum.orfeo-toolbox.org/t/wrong-computation-of-invalid-zones/1325)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 2\ **Last updated:** [April 29, 2022, 12:53pm UTC](https://forum.orfeo-toolbox.org/t/wrong-computation-of-invalid-zones/1325 "2022-04-29T12:53:33Z")
Hello all, We noticed a change in the results of applying MAJA concerning the invalid zones for the SENTINEL products in the new format (post 01/25/22). Before, the zone of a tile outside of the radar swiping zone were… --- ## [Using Python 3.6 with MAJA](https://forum.orfeo-toolbox.org/t/using-python-3-6-with-maja/1222)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 4\ **Last updated:** [January 10, 2022, 3:32pm UTC](https://forum.orfeo-toolbox.org/t/using-python-3-6-with-maja/1222 "2022-01-10T15:32:22Z")
Hi All, I am currently evaluating the effort of migrating my system from MAJA 3.3 to MAJA 4.5. I encountered a few minor issues, but I will come back to those later. My main concern for the moment is that it seems Sta… --- ## [Migrate MAJA 3.3 to 4.5](https://forum.orfeo-toolbox.org/t/migrate-maja-3-3-to-4-5/1231)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 0\ **Last updated:** [January 10, 2022, 10:47am UTC](https://forum.orfeo-toolbox.org/t/migrate-maja-3-3-to-4-5/1231 "2022-01-10T10:47:45Z")
I think this is my last post about the migration of our system from MAJA 3.3 to MAJA 4.5. It has 2 purposes: one, document what I found for whomever would go through the same process and two, make sure that the assumptio… --- ## [StartMaja 4.5 GIPP downloads](https://forum.orfeo-toolbox.org/t/startmaja-4-5-gipp-downloads/1220)
**Author:** [@seffinier](https://forum.orfeo-toolbox.org/u/seffinier)\ **Replies:** 2\ **Last updated:** [December 23, 2021, 9:22am UTC](https://forum.orfeo-toolbox.org/t/startmaja-4-5-gipp-downloads/1220 "2021-12-23T09:22:53Z")
Hi all, I’ve just installed MAJA 4.5 and I am trying to launch it with StartMaja. During the initialization of the process, it tries to download the GIPP files issuing the following command: wget --retry-connrefused -… --- ## [\[FAQ\] Description of MAJA main parameters](https://forum.orfeo-toolbox.org/t/faq-description-of-maja-main-parameters/1100)
**Author:** [@olivier.hagolle](https://forum.orfeo-toolbox.org/u/olivier.hagolle)\ **Replies:** 0\ **Last updated:** [June 30, 2021, 3:11pm UTC](https://forum.orfeo-toolbox.org/t/faq-description-of-maja-main-parameters/1100 "2021-06-30T15:11:38Z")
MAJA Parameters The parameters of MAJA have been tuned to work on all sorts of sites, from the agricultural regions to the tropical forests, and from the deserts to the snow covered regions. A local adaptation of the par…