How many images have you got in the set ?

6 images..

can you try with images here?

thank you so much i will try with them and then tell you the results

still the same problem could be a problem with the build of the library ?! it should give me a point cloud representing the scene , isnt it !? or there is something i miss understand ?

i build ceres without SuiteSparse , would that be the problem !?

I don't think so. Have yo run sample example_sfm_scene_reconstruction.exe ?

How to build sfm using cmake and my getbuilinformation it's here

i didnt build the examples i will build it again and build examples and show you my build information

thank you so much for your concern i really appreciate it

here are my build informationhere

when i run the example it gives me this errors ERROR: In e:\library\vtk\vtk-8.1.1\rendering\opengl2\vtkwin32openglrenderwindow.cxx, line 685 vtkWin32OpenGLRenderWindow (000001C8D871B360): failed to get wglChoosePixelFormatARB

ERROR: In e:\library\vtk\vtk-8.1.1\rendering\opengl2\vtkwin32openglrenderwindow.cxx, line 769 vtkWin32OpenGLRenderWindow (000001C8D871B360): failed to get valid pixel format.

ERROR: In e:\library\vtk\vtk-8.1.1\rendering\opengl2\vtkopenglrenderwindow.cxx, line 785 vtkWin32OpenGLRenderWindow (000001C8D871B360): GLEW could not be initialized.

Sorry for delay. I think error given is a problem with vtk lib mixed release and debug (you cannot run vtk with opencv releaese and debug you have to choose)

it is okay so i have to build vtk lib only with debug or release(lets say release ) then build opencv in release ?

Yes release with release

okay i will do so and tell you the updates thank you so much

iam really sorry for bothering you but there is still no resuts here is sample of my code and here are the results i would really appreciate it if you would check them for me and thank you in advance

Can you change source code in opencv_contrib file reconstruct.cpp : reconstruct_(images, Rs, Ts, K, points3d); try with reconstruct_(images, Rs, Ts, K, points3d,false);

You must rebuild opencv_contrib

i will do so but i have just discovered that my laptop doesnt support opencl could this be the problem !?

" laptop doesnt support opencl " it's weird because you have got some results in vtk windows wrong results but results : see my comment in PR

vtk depends on open GL not open CL which i have to go down from 8.1 to 6.3 in order to see these results because of some compatibility issues and in the opening window it says that it initialize open CL run time which i dont support so could it be ?!

If you think problem is OpenCL then build opencv with Test and you will get many program to check opencl

thank you so much but let me try your solution about changing the source code i didnt get it well could you just explain to me what to do exactly ?

Change source code and rebuild opencv with opencv_contrib

add the false parameter in the line you specified in the source code ?

yes only false

okay , thank you so much

still it doesnt work and i changed the laptop and the same results appeared so it must be something in my build well i had to add

define CERES_FOUND 1

in order to use the reconstruct function and i didnt include any thing concerning ceres solver in my solution could be this is the problem ?! should i add the ceres solver include and library files to the solution ?!

You must add ceres lib : it is the solver without solver no result. Run this script : https://gist.github.com/LaurentBerger... to install sfm on windows

i already installed it successfully but the reconstruct function should have worked without the define right ?!

and iam using cmake GUI i really dont know how to run this script

you must install git-bash

to run the script ?

you are using opencv 4 pre and iam using 3.4.1 ? should i upgrade ?!

yes script start at line and last line is 73 ( update eigen repo with https://github.com/eigenteam/eigen-gi...)

and the part of define ceres_found 1 is this right ?!

No you mustn't change ceres_found because cmake set this variable if ceres is found

okay thank you so much for helping me and here are the steps that i will follow : upgrade eigen from the repository you sent to me upgrade to opencv 4 download latest version of ceres glog and gflags ( any version is okay ?! ) then run the script , anything missing ?!

opencv 3.4.1 or master it does not matter

and the version of ceres , glog and gflag wouldnt matter too ?!

use the script everything is manage in the script

okay thank you so much

this script is written for visual studio 2015 and mine is 2017 would this be a problem ?!

and it gives me this error at echo $CMAKE CONFIG GENERATOR ,command not found

change CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64" in CMAKE_CONFIG_GENERATOR="Visual Studio 15 2017 Win64"

line 29 , line 32 , line 34 command not found

cmake must be in path

well thank thank you so much for your kind patience

it worked thank you so much i will return to my build now