Error when running example SfM code from the [documentation](https://github.com/openMVG/openMVG/wiki/OpenMVG-on-your-image-dataset)

[ttzytt]

I'm new to the software. After successfully compiling it in my machine, I tried to follow the documentation here to run the example code on SfM like:

$ cd openMVG_Build/software/SfM/
$ python SfM_SequentialPipeline.py [full path image directory] [resulting directory]
$ python SfM_SequentialPipeline.py ~/home/user/data/ImageDataset_SceauxCastle/images ~/home/user/data/ImageDataset_SceauxCastle/Castle_Incremental_Reconstruction

However, some errors popped up:

python3.11 SfM_GlobalPipeline.py ./ImageDataset_SceauxCastle/images ./sfm_test_out
Using input dir  :  ./ImageDataset_SceauxCastle/images
      output_dir :  ./sfm_test_out
1. Intrinsics analysis
INFO: [main_SfMInit_ImageListing.cpp:197]  You called : /mnt/e/prog/pris_research/openMVG_Build/Linux-x86_64-RELEASE/openMVG_main_SfMInit_ImageListing
--imageDirectory ./ImageDataset_SceauxCastle/images
--sensorWidthDatabase /mnt/e/prog/pris_research/openMVG/src/software/SfM/../../openMVG/exif/sensor_width_database/sensor_width_camera_database.txt
--outputDirectory ./sfm_test_out/matches
--focal -1
--intrinsics
--camera_model 3
--group_camera_model 1
--use_pose_prior 0
--prior_weights 1.0;1.0;1.0
--gps_to_xyz_method 0
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
Wrong JPEG library version: library is 80, caller expects 90
INFO: [loggerprogress.hpp:79] [- Listing images -] 100%
WARNING: [main_SfMInit_ImageListing.cpp:458] Warning & Error messages:
K.txt: Unkown image file format.
Readme.txt: Unkown image file format.

INFO: [main_SfMInit_ImageListing.cpp:478] SfMInit_ImageListing report:
listed #File(s): 13
usable #File(s) listed in sfm_data: 0
usable #Intrinsic(s) listed in sfm_data: 0
2. Compute features
INFO: [main_ComputeFeatures.cpp:120]  You called :
/mnt/e/prog/pris_research/openMVG_Build/Linux-x86_64-RELEASE/openMVG_main_ComputeFeatures
--input_file ./sfm_test_out/matches/sfm_data.json
--outdir ./sfm_test_out/matches
--describerMethod SIFT
--upright 0
--describerPreset NORMAL
--force 0
--numThreads 0

INFO: [main_ComputeFeatures.cpp:343] Task done in (s): 0
3. Compute matching pairs
 You called:
/mnt/e/prog/pris_research/openMVG_Build/Linux-x86_64-RELEASE/openMVG_main_PairGenerator
--input_file       : ./sfm_test_out/matches/sfm_data.json
--output_file      : ./sfm_test_out/matches/pairs.bin
Optional parameters
--pair_mode        : EXHAUSTIVE
--contiguous_count : -1

Loading scene.Computing pairs.
Saving pairs.
4. Compute matches
INFO: [main_ComputeMatches.cpp:113]  You called :
/mnt/e/prog/pris_research/openMVG_Build/Linux-x86_64-RELEASE/openMVG_main_ComputeMatches
--input_file ./sfm_test_out/matches/sfm_data.json
--output_file ./sfm_test_out/matches/matches.putative.bin
--pair_list ./sfm_test_out/matches/pairs.bin
Optional parameters:
--force 0
--ratio 0.8
--nearest_matching_method AUTO
--cache_size unlimited
--preemptive_feature_used/count 0 / 200
INFO: [main_ComputeMatches.cpp:216]  - PUTATIVE MATCHES -

INFO: [main_ComputeMatches.cpp:225]      PREVIOUS RESULTS LOADED; #pair: 0
INFO: [main_ComputeMatches.cpp:365] #Putative pairs: 0
INFO: [graph_stats.hpp:53] Graph statistics:
        #nodes: 0
        #cc: 0
        #singleton: 0
        Node degree statistics: min: 1607175664, max: 1607176656, mean: -1189435136, median: 1607176336
5. Filter matches
INFO: [main_GeometricFilter.cpp:131]  You called :
/mnt/e/prog/pris_research/openMVG_Build/Linux-x86_64-RELEASE/openMVG_main_GeometricFilter
--input_file:        ./sfm_test_out/matches/sfm_data.json
--matches:           ./sfm_test_out/matches/matches.putative.bin
--output_file:       ./sfm_test_out/matches/matches.e.bin
Optional parameters:
--input_pairs
--output_pairs
--force              false
--geometric_model    e
--guided_matching    0
--cache_size         unlimited
INFO: [graph_stats.hpp:53] Graph statistics:
        #nodes: 0
        #cc: 0
        #singleton: 0
        Node degree statistics: min: 931805680, max: 931806080, mean: 1729316416, median: 931804161
INFO: [main_GeometricFilter.cpp:383] Task done in (s): 0
INFO: [main_GeometricFilter.cpp:386]
 Export Adjacency Matrix of the pairwise's geometric matches
6. Do Global reconstruction
INFO: [main_SfM.cpp:157]
-----------------------------------------------------------
 Structure from Motion:
-----------------------------------------------------------
INFO: [connectedComponent.hpp:99] CleanGraph_KeepLargestBiEdge_Nodes():: => connected Component: 0
WARNING: [sfm_global_engine_relative_motions.cpp:122] Invalid input image graph for global SfM
7. Colorize Structure
ERROR: [main_ComputeSfM_DataColor.cpp:69] The input SfM_Data file "./sfm_test_out/reconstruction_global/sfm_data.bin" cannot be read.

It seems like the problem here is Wrong JPEG library version: library is 80, caller expects 90, and due to this error, the other steps in the pipeline failed.

[ttzytt]

By the way, when reading the documentation, I was kind of confused by the structure and organization.

Currently, from what I know, the software has two pieces of documentation. One is https://openmvg.readthedocs.io/en/latest/, and the other is https://github.com/openMVG/openMVG/wiki.

Sometimes, there are overlapping contents, like running the example code for SfM:

• https://github.com/openMVG/openMVG/wiki/OpenMVG-on-your-image-dataset
• https://openmvg.readthedocs.io/en/latest/software/SfM/SfM/

Other topics, like more detailed library structure, are available only on readthedocs.io.

I wonder what is intention of separating the documentation into two different websites, or is it planned that the wiki will be later merged into readthedocs.io.

[ttzytt]

I have just checked Issue #1349, which has a similar error. It seems like it is related to the version of libjpeg. However, it still gives me the same error after installing version 9 (the original one on my computer was version 8).