在OpenCV中讀取8位JPEG

我有8位彩色JPEG圖像，Windows Image Viewer可以正確顯示它。我試圖從OpenCV讀取它，但它失敗（返回空cv::Mat）。這是閱讀代碼：在OpenCV中讀取8位JPEG

auto img= cv::imread("c:/1.jpg"); // I tried also with cv::IMREAD_ANYDEPTH 
//img.empty() == true 
cv::imshow("img", img); 
cv::waitKey();

JPEG文件屬性：

我錯過了什麼？

編輯（生成信息）：

General configuration for OpenCV 3.1.0 ===================================== 
    Version control:    1.4.79-1573-gc6780c3-dirty 

    Platform: 
    Host:      Windows 10.0.10586 AMD64 
    CMake:      3.4.2 
    CMake generator:    Visual Studio 12 2013 Win64 
    CMake build tool:   C:/Program Files (x86)/MSBuild/12.0/bin/MSBuild.exe 
    MSVC:      1800 

    C/C++: 
    Built as dynamic libs?:  NO 
    C++ Compiler:    C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/x86_amd64/cl.exe (ver 18.0.40629.0) 
    C++ flags (Release):   /DWIN32 /D_WINDOWS /W4 /GR /EHa /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4324 /wd4275 /wd4589 /MP8 /MD /O2 /Ob2 /D NDEBUG /Zi 
    C++ flags (Debug):   /DWIN32 /D_WINDOWS /W4 /GR /EHa /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4324 /wd4275 /wd4589 /MP8 /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 
    C Compiler:     C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/x86_amd64/cl.exe 
    C flags (Release):   /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP8 /MD /O2 /Ob2 /D NDEBUG /Zi 
    C flags (Debug):    /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP8 /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 
    Linker flags (Release):  /machine:x64 /INCREMENTAL:NO /debug 
    Linker flags (Debug):  /machine:x64 /debug /INCREMENTAL 
    Precompiled headers:   YES 
    Extra dependencies:   comctl32 gdi32 ole32 setupapi ws2_32 ZLIB::zlib JPEG::jpeg PNG::png vfw32 
    3rdparty dependencies:  libwebp libjasper IlmImf libprotobuf ippicv 

    OpenCV modules: 
    To be built:     core flann imgproc ml photo reg surface_matching video dnn fuzzy imgcodecs shape videoio highgui objdetect plot superres xobjdetect xphoto bgsegm bioinspired dpm face features2d line_descriptor saliency text calib3d ccalib datasets rgbd stereo structured_light tracking videostab xfeatures2d ximgproc aruco optflow stitching 
    Disabled:     java world contrib_world 
    Disabled by dependency:  - 
    Unavailable:     cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev python2 python3 ts viz cvv hdf matlab sfm 

    Windows RT support:   NO 

    GUI: 
    QT:       NO 
    Win32 UI:     YES 
    OpenGL support:    NO 
    VTK support:     NO 

    Media I/O: 
    ZLib:      ZLIB::zlib (ver 1.2.8) 
    JPEG:      JPEG::jpeg (ver 90) 
    WEBP:      build (ver 0.3.1) 
    PNG:       PNG::png (ver ..) 
    TIFF:      NO 
    JPEG 2000:     build (ver 1.900.1) 
    OpenEXR:      build (ver 1.7.1) 
    GDAL:      NO 

    Video I/O: 
    Video for Windows:   YES 
    DC1394 1.x:     NO 
    DC1394 2.x:     NO 
    FFMPEG:      NO 
     codec:      NO 
     format:     NO 
     util:      NO 
     swscale:     NO 
     resample:     NO 
     gentoo-style:    NO 
    GStreamer:     NO 
    OpenNI:      NO 
    OpenNI PrimeSensor Modules: NO 
    OpenNI2:      NO 
    PvAPI:      NO 
    GigEVisionSDK:    NO 
    DirectShow:     YES 
    Media Foundation:   NO 
    XIMEA:      NO 
    Intel PerC:     NO 

    Parallel framework:   Concurrency 

    Other third-party libraries: 
    Use IPP:      9.0.1 [9.0.1] 
     at:      D:/hunter/_Base/xxxxxxx/1fbd0c5/1378dcd/Build/OpenCV/Source/3rdparty/ippicv/unpack/ippicv_win 
    Use IPP Async:    NO 
    Use Eigen:     YES (ver 3.2.4) 
    Use Cuda:     NO 
    Use OpenCL:     NO 
    Use custom HAL:    NO 

    Python 2: 
    Interpreter:     C:/Python27/python.exe (ver 2.7.13) 

    Python 3: 
    Interpreter:     C:/Users/h.helfawi/AppData/Local/Programs/Python/Python36/python.exe (ver 3.6) 

    Python (for build):   C:/Python27/python.exe 

    Java: 
    ant:       C:/NVPACK/apache-ant-1.8.2/bin/ant.bat (ver 1.8.2) 
    JNI:       C:/NVPACK/jdk1.8.0_77/include C:/NVPACK/jdk1.8.0_77/include/win32 C:/NVPACK/jdk1.8.0_77/include 
    Java wrappers:    NO 
    Java tests:     NO 

    Matlab:      Matlab not found or implicitly disabled 

    Tests and samples: 
    Tests:      NO 
    Performance tests:   NO 
    C/C++ Examples:    NO 

    Install path:     D:/xxxxx 

    cvconfig.h is in:    D:/xxxxx

圖像：

這就是我試圖打開（我不能把它上傳的圖片保存的元信息的圖像）https://drive.google.com/open?id=0B2CEZBv6I5szWkhnQVFYS29ZdWc

來源

2017-02-06 Humam Helfawi

我認爲你應該使用imread（「c：\\ 1.jpg」） –

斜槓或雙反斜槓，兩者在Windows文件路徑中都是一樣的。無論如何，我試過它們兩個 –

你有一個叫做'opencv_version '？如果是這樣，請嘗試運行'opencv_version -v | FINDSTR/I JPEG' –

儘管後綴.jpg文件是GIF格式。最新版本的OpenCV 3.2中的imread（）無法讀取GIF格式：請參閱支持格式的list。

來源

2017-02-10 17:35:28

正確，你提供的文件是一個GIF。 –

在OpenCV中讀取8位JPEG

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