John Hany's profile - activity

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2016-07-28 12:40:53 -0600	received badge	● Teacher (source)
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2016-07-27 04:36:37 -0600	answered a question	feature2d_manual.hpp modifications don't take effect I've encountered the same issue, and here's my solution: Copy the folder `xfeatures2d` and file `xfeatures2d.hpp` from `opencv_contrib/modules/xfeatures2d/include/opencv2` to the OpenCV master path : `opencv/modules/features2d/include/opencv2`. And modify the `features2d_manual.hpp` file as you did. Copy the `brief.cpp` file located at `opencv_contrib/modules/xfeatures2d/src` to your project's jni folder and add `brief.cpp` to `LOCAL_SRC_FILES` in your `Android.mk`. Make sure you set `include ... build/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk` path correctly in your `Android.mk` file. When build is finished, make sure you re-install the new OpenCV Manager (at `build/OpenCV-android-sdk/apk`) to your device.
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2016-04-10 07:35:27 -0600	received badge	● Scholar (source)
2016-04-10 07:35:12 -0600	commented answer	OpenCV 3.1 - unresolved external symbol cvUpdateMotionHistory Switching to `updateMotionHistory()` worked! Yet, I have to convert `IplImage` to `Mat` using `cv::cvarrToMat` and convert them back afterwards. Thanks anyway!
2016-04-10 05:27:16 -0600	asked a question	OpenCV 3.1 - unresolved external symbol cvUpdateMotionHistory I'm using OpenCV 3.1 and have compiled together opencv_contrib downloaded from GitHub on 2016-3-24. I have these codes that detect moving vehicles in video and am trying to build it with VS2012 on Windows 7. One line of the codes is `cvUpdateMotionHistory`: `cvUpdateMotionHistory( silh, mhi, timestamp, MHI_DURATION );` The only errors I got are these: `1>ocv-test-vc11.obj : error LNK2001: unresolved external symbol cvUpdateMotionHistory 1>E:\projects\C++\OpenCV\ocv-test-vc11\x64\Release\ocv-test-vc11.exe : fatal error LNK1120: 1 unresolved externals` The other lines work just fine, because when I comment out this single line, the solution can be successfully built and run. I have linked `opencv_video310.lib` and `opencv_optflow310.lib` in Linker \| Input. In fact, I have linked every single .lib file in my opencv's `vc11\lib` directory. How do I solve this LNK error?