2020-05-11 02:57:13 -0600 | received badge | ● Notable Question (source) |
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2014-06-24 03:04:03 -0600 | asked a question | Add audio channel to a video created with OpenCv How can I add an audio channel to a video created with OpenCv ? the audio channel would be a separate audio file, that i should merge with the video file. |
2014-06-01 06:48:27 -0600 | commented answer | Android x86_64 support? Strange that intel that produces x86-64 and develops opencv did not know about this. |
2014-06-01 06:44:18 -0600 | received badge | ● Critic (source) |
2014-04-24 09:54:01 -0600 | commented answer | Android x86_64 support? ARM is not x86 , they are completely different processors, you'll never need to compile x86_64 to run or debug an android app |
2014-04-19 08:23:32 -0600 | answered a question | iOS opencv2.framework not compile with linker flag -ObjC and -all_load Change the order of frameworks AVFoundation and OpenCv ; make a full clean ( both clean and clean output folder, this last is visible pressing option in project menu ) and then rebuild |
2014-04-19 06:06:17 -0600 | answered a question | Android x86_64 support? I thought there's was no plan to release such platform in android and there's not such device actually, why should you need that ? In iOS , it's available only for simulator that works very differently from android ( that is, the simulator does not emulate hardware but software ) |
2014-04-14 04:49:09 -0600 | commented answer | Opencv builds on lab computer, but not laptop. You should apply some other patches: (1) change build_framework.py and add this at line #43 : "-DCMAKE_C_FLAGS=\"-Wno-implicit-function-declaration\" " + (2) then apply this ptach to modules/world/CMakeLists.txt:84 : http://stackoverflow.com/questions/16983696/how-to-build-opencv-2-4-9-for-ios let me know ( i will provide the patch to 2.4 branch when i'm sure about this ) Ale |
2014-04-14 02:47:26 -0600 | received badge | ● Teacher (source) |
2014-04-13 04:57:02 -0600 | commented answer | Opencv builds on lab computer, but not laptop. Ok fixed ( works for me). follow these steps: 1) start getting this file : https://raw.githubusercontent.com/Kitware/CMake/master/Modules/CMakeDetermineCompilerId.cmake and substitute the wrong old one ( this contains the patch ). then there are 2 important things: 2) in build_framework.py , change IPHONEOS_DEPLOYMENT_TARGET=7.1 ( was 6.0 ) 3) compile as root ( there are some authorizations issues tryng to create temporary files ) it should build now |
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2014-04-13 04:21:32 -0600 | answered a question | memory leak with VideoWriter this bug has been fixed . more info here: http://code.opencv.org/issues/3620 |
2014-04-09 08:06:58 -0600 | answered a question | Opencv builds on lab computer, but not laptop. I think the problem may be xcode 5.1 , i can't compile opencv since last upgrade but the bug is in cmake ( i think ), maybe here : /Applications/CMake 2.8-12.app/Contents/share/cmake-2.8/Modules/CMakeDetermineCompilerId.cmake I tried to apply this patch: http://public.kitware.com/pipermail/cmake-developers/2013-December/009243.html but I go on having problems... this is the file that i have modified: https://dl.dropboxusercontent.com/u/20752176/CMakeDetermineCompilerId.cmake please let me know if you manage to fix and how ( maybe i'm missing something ) |
2013-04-06 11:32:22 -0600 | commented question | error with framework built from sources I have identified the problem: i need a linker option in my project: -all_load with this flag, the opencv framework gives the errors I said i will open a bug... |
2013-04-05 11:01:44 -0600 | received badge | ● Editor (source) |
2013-04-05 10:59:45 -0600 | asked a question | error with framework built from sources I get many errors when i try to build an app with the framework i have built from sources ( listed below ), am I doing some errors ? duplicate symbol __ZN2cv15SURFFindInvoker17findMaximaInLayerERKNS_3MatES3_RKNSt3__16vectorIS1_NS4_9allocatorIS1_EEEESA_RKNS5_IiNS6_IiEEEERNS5_INS_8KeyPointENS6_ISF_EEEEiifi in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZN2cv4SURFC1Ediibb in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZN2cv4SURFC1Ev in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZN2cv4SURFC2Ediibb in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZN2cv4SURFC2Ev in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF10detectImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEES3_ in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF11computeImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERS1_ in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF14descriptorSizeEv in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF14descriptorTypeEv in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURFclERKNS_11_InputArrayES3_RNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURFclERKNS_11_InputArrayES3_RNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERKNS_12_OutputArrayEb in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE0_NS_15FeatureDetectorE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE0_NS_9Feature2DE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE4_NS_19DescriptorExtractorE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTIN2cv4SURFE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTSN2cv4SURFE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTTN2cv4SURFE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTVN2cv4SURFE in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF11computeImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERS1_ in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF14descriptorSizeEv in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF14descriptorTypeEv in: /Sorgenti/ios/opencv2.framework/opencv2(surf.o) ld: 21 duplicate symbols for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) |
2013-03-26 18:01:22 -0600 | commented answer | memory leak with VideoWriter Yes i have tried all the commented decoders I think i have found the problem, trying to patch it ( bug #2918 ), there are a couple of variables that are not released : cap_avfoundation.mm (1316) i don't manage to compile the framework correctly and test the patch |
2013-03-26 17:46:17 -0600 | asked a question | opencv.framework that i have compiled has duplicate symbols I have tried to compile opencv from sources using python script in ios directory, but i have got linker errors ( that i'm not getting using the downloaded compiled framework ) ( i just wanted to fix a bug in opencv ) duplicate symbol __ZN2cv15SURFFindInvoker17findMaximaInLayerERKNS_3MatES3_RKNSt3__16vectorIS1_NS4_9allocatorIS1_EEEESA_RKNS5_IiNS6_IiEEEERNS5_INS_8KeyPointENS6_ISF_EEEEiifi in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZN2cv4SURFC1Ev in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF10detectImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEES3_ in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF11computeImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERS1_ in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF14descriptorSizeEv in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURF14descriptorTypeEv in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZNK2cv4SURFclERKNS_11_InputArrayES3_RNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERKNS_12_OutputArrayEb in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE0_NS_15FeatureDetectorE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE0_NS_9Feature2DE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTCN2cv4SURFE4_NS_19DescriptorExtractorE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTIN2cv4SURFE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTSN2cv4SURFE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTTN2cv4SURFE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZTVN2cv4SURFE in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF11computeImplERKNS_3MatERNSt3__16vectorINS_8KeyPointENS4_9allocatorIS6_EEEERS1_ in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF14descriptorSizeEv in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) duplicate symbol __ZThn4_NK2cv4SURF14descriptorTypeEv in: /Sorgenti/opencv/opencv2.framework/opencv2(surf.o) ld: 21 duplicate symbols for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation) |
2013-03-25 17:27:49 -0600 | commented answer | memory leak with VideoWriter Ok, just to be sure i did the changes you said, no difference at all, memory is lost in the same way ... _videoWriter << frame; ( I used pointer to objects, there's nothing strange in it ) |
2013-03-25 12:24:59 -0600 | commented answer | memory leak with VideoWriter I'm using c++ interface, at least I thought so ; how should I substitute _videoWriter->open() ? In any case the part of code that is giving problems is: _videoWriter->write(frame); i have tried : *_videoWriter << frame; but i have the same problema |
2013-03-24 04:38:24 -0600 | asked a question | memory leak with VideoWriter I have a problem writing a video in iOS. I have double checked my code, the problem is just in : each time I call this function, i lose some memory ; it seems to me that the memory is not realeased even after _videoWriter->release() ( only a very little portion ) as i should register long videos, I wanted to try to save the video now and then, but if i close the file i had created (through method release() ) and try to reopen it , i get an error ( in general, it seems to me that if the file i'm trying to open already exists, the function fail, i can only create new video files ) this is the method that adds a frame: this is how i open the video: at the time i manage to record a video about 2 minutes lenght before it crashes on an iphone4s ( 10 fps, 288x352 ) |
2013-03-08 06:27:32 -0600 | answered a question | CvVideoWriter WriteFrame for iOS not working Change the file extension to m4v and delete existing file before calling cvCreateVideoWriter() ( opencv chooses filetype looking at file extension ) |