Linux cvLoadImage（）在加载*.jpg时失败
我试图使用Linux cvLoadImage（）在加载*.jpg时失败,linux,opencv,jpeg,Linux,Opencv,Jpeg,我试图使用cvLoadImage函数加载JPEG图像，但失败。我得到输出“图像未加载”（见下面的代码）。但是，会出现一个窗口，但没有图片。 尝试加载png图片时，cvLoadImage操作成功，即图片显示在窗口中。是否有我可能丢失的包或我做错了什么 我在Ubuntu上使用openCV IplImage* img = NULL; if( argc > 1 ) img = cvLoadImage(argv[1], 1); if(img == 0) printf("image
cvLoadImagecvLoadImageIplImage* img = NULL;
if( argc > 1 )
img = cvLoadImage(argv[1], 1);
if(img == 0)
printf("image not loaded \n")
Jpeg在OpenCv下加载良好，我刚刚检查过。看看你有没有
Jpeg在OpenCv下加载良好，我刚刚检查过。看看你有没有
实际上，这条路是正确的。我不知道我构建OpenCV的方式是否不正确： 一般配置================================================
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
现在运行make…实际上路径是正确的。我不知道我构建OpenCV的方式是否不正确： 一般配置================================================
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
CXX: g++
CXXCPP: g++ -E
CPPFLAGS:
CXXFLAGS:
LDFLAGS:
Install path: /usr/local
Debug flags
Optimization flags -DNDEBUG -O3 -g -march=pentium4 -ffast-math -fomit-frame-pointer
MMX/SSE/SSE2/SSE3: -mmmx -msse -msse2 -msse3
OpenMP support: -fopenmp
External BLAS & LAPACK: no
Windowing system --------------
Use Carbon / Mac OS X: no
Use gtk+ 2.x: yes
Use gthread: yes
Image I/O ---------------------
Use ImageIO / Mac OS X: no
Use libjpeg: yes
Use zlib: yes
Use libpng: yes
Use libtiff: no
Use libjasper: no
Use libIlmImf/OpenEXR: no
Video I/O ---------------------
Use QuickTime / Mac OS X: no
Use xine: no
Use gstreamer: no
Use ffmpeg: no
Use dc1394 & raw1394: no
Use v4l: yes
Use v4l2: yes
Use unicap: no
SWIG
Python no
Octave no
Build demo apps yes
现在运行make…我重新构建了openCV，并在执行此操作时改为root用户，而不是键入sudo。现在可以打开jpg文件了。我可能在早些时候的openCV安装过程中丢失了sudo，这导致了一些不匹配。我重建了openCV，并在执行时改为root用户，而不是键入sudo。现在可以打开jpg文件了。我可能在早些时候的openCV安装过程中丢失了sudo，这导致了一些不匹配