OpenCV 3.4.3 says that SIFT is patented. Any other way to implement SIFT in python for free?











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I am getting the following error when I want to use SIFT in OpenCV in python:



OpenCV(3.4.3) C:projectsopencv-pythonopencv_contribmodulesxfeatures2dsrcsift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create'


I have installed opencv-contrib-python and opencv-python and both of them have the exact same version. I checked another post with a similar problem and it turned out to be caused by conflicting versions, but the versions I have installed are the same. Somewhere I read that opencv-contrib-python does not offer some packages that are non-free anymore. If that's true, then what other options do I have to use SIFT in python for free?






python opencv sift







share|improve this question






















  • I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
    – api55
    Nov 21 at 9:02










  • @api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
    – stressed out
    Nov 21 at 9:36










  • I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
    – api55
    Nov 21 at 9:44










  • @api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
    – stressed out
    Nov 21 at 9:50










  • oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
    – api55
    Nov 21 at 10:19















up vote
0
down vote

favorite












I am getting the following error when I want to use SIFT in OpenCV in python:



OpenCV(3.4.3) C:projectsopencv-pythonopencv_contribmodulesxfeatures2dsrcsift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create'


I have installed opencv-contrib-python and opencv-python and both of them have the exact same version. I checked another post with a similar problem and it turned out to be caused by conflicting versions, but the versions I have installed are the same. Somewhere I read that opencv-contrib-python does not offer some packages that are non-free anymore. If that's true, then what other options do I have to use SIFT in python for free?






python opencv sift







share|improve this question






















  • I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
    – api55
    Nov 21 at 9:02










  • @api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
    – stressed out
    Nov 21 at 9:36










  • I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
    – api55
    Nov 21 at 9:44










  • @api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
    – stressed out
    Nov 21 at 9:50










  • oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
    – api55
    Nov 21 at 10:19













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am getting the following error when I want to use SIFT in OpenCV in python:



OpenCV(3.4.3) C:projectsopencv-pythonopencv_contribmodulesxfeatures2dsrcsift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create'


I have installed opencv-contrib-python and opencv-python and both of them have the exact same version. I checked another post with a similar problem and it turned out to be caused by conflicting versions, but the versions I have installed are the same. Somewhere I read that opencv-contrib-python does not offer some packages that are non-free anymore. If that's true, then what other options do I have to use SIFT in python for free?






python opencv sift







share|improve this question













I am getting the following error when I want to use SIFT in OpenCV in python:



OpenCV(3.4.3) C:projectsopencv-pythonopencv_contribmodulesxfeatures2dsrcsift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create'


I have installed opencv-contrib-python and opencv-python and both of them have the exact same version. I checked another post with a similar problem and it turned out to be caused by conflicting versions, but the versions I have installed are the same. Somewhere I read that opencv-contrib-python does not offer some packages that are non-free anymore. If that's true, then what other options do I have to use SIFT in python for free?






python opencv sift




python opencv sift






share|improve this question













share|improve this question











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asked Nov 21 at 8:27









stressed out

1468




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  • I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
    – api55
    Nov 21 at 9:02










  • @api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
    – stressed out
    Nov 21 at 9:36










  • I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
    – api55
    Nov 21 at 9:44










  • @api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
    – stressed out
    Nov 21 at 9:50










  • oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
    – api55
    Nov 21 at 10:19


















  • I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
    – api55
    Nov 21 at 9:02










  • @api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
    – stressed out
    Nov 21 at 9:36










  • I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
    – api55
    Nov 21 at 9:44










  • @api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
    – stressed out
    Nov 21 at 9:50










  • oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
    – api55
    Nov 21 at 10:19
















I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
– api55
Nov 21 at 9:02




I common alternative that is implemented in OpenCV is ORB... You can take a look to this question. You may use SIFT for non-comercial apps as far as I remember. And you can use the one of OpenCV, just that you need to make sure the module is compiled. How did you install OpenCV?
– api55
Nov 21 at 9:02












@api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
– stressed out
Nov 21 at 9:36




@api55 Thank you for your answer. I'm not looking for an alternative to SIFT, I'm looking for an alternative to OpenCV. I'm using SIFT for a university project and I must use SIFT only. I installed OpenCV using site-packages in PyCharm. I didn't compile it on my own. Does that make a difference?
– stressed out
Nov 21 at 9:36












I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
– api55
Nov 21 at 9:44




I misunderstood your question. In recent python versions you need to install opencv-contrib for non-free modules.... I think for python the package is opencv-contrib-python
– api55
Nov 21 at 9:44












@api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
– stressed out
Nov 21 at 9:50




@api55 Thanks. But I have installed opencv-contrib-python. That error is thrown by opencv-contrib actually. :(
– stressed out
Nov 21 at 9:50












oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
– api55
Nov 21 at 10:19




oh, true, I didn't see it... maybe it is not on with the current version :( My only solution left is either find wheel file that has it or compile it from sources
– api55
Nov 21 at 10:19

















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