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2017-02-13 03:17:10 -0600 | answered a question | OpenCV 3.2 build for iOS with libjpeg-turbo to be used with Qt I have tried to build OpenCV 3.2 with libjpeg-turbo 1.3.0. It crashes in imwrite without any error message. Then I fallback to the libjpeg version used by Qt 5.8. That works. The build Instruction1) Download opencv 3.2 and opencv contrib 3.2 and extract them: $ ls opencv-3.2.0 opencv_contrib-3.2.0 2) Download libjpeg source code Since I have already downloaded the Qt 5.8 source code, I simply use Qt's version. 3) Patch opencv-3.2.0/platforms/ios/build_framework.py You should change the parameter of -DJPEG_INCLUDE_DIR and -DJPEG_LIBRARY according to your environment -DJPEG_INCLUDE_DIR = Path to the source code e.g ~/qt-everywhere-opensource-src-5.8.0/qtbase/src/3rdparty/libjpeg -DJPEG_LIBRARY = Path to the libqjpeg.a from Qt SDK e.g ~/Qt/5.8/ios/plugins/imageformats/libqjpeg.a 4) Build |
2015-01-30 01:23:32 -0600 | answered a question | OpenCV iOS build problem: The opencv2.framework is almost empty Seem that there has problem in making the libopencv_world.a . It do not include the built module. Finally , I solve this problem by checkout the latest git version instead of using 2.4.9 /2.4.10 . |
2015-01-28 01:17:07 -0600 | asked a question | OpenCV iOS build problem: The opencv2.framework is almost empty Hi, I would like to build OpenCV for iOS. I have followed the instruction with those steps
http://docs.opencv.org/doc/tutorials/... Those step is successfully without any errors. The opencv2.framework was there in the ios folder. However, the file size is just around 2MB. Then I run nm to check the content: That is all the symbol of the file has. Unlike the opencv2.framework downloaded I have been tested with 2.4.9 and 2.4.10 . The result is same. Any suggestion to find out the problem? |
2013-11-29 11:03:58 -0600 | commented answer | How to use the LshIndexParams? ohoho , I found out the reason. It is the problem of source installation of OpenCV. There has multiple version on my Linux and it is linked to old version. It is fixed. thx |
2013-11-28 19:16:00 -0600 | commented answer | How to use the LshIndexParams? I am using OpenCV 2.4.7 but it still throw 'cvflann::anyimpl::bad_any_cast'.. Anyone know what is wrong? thx |