I wonder why there are all 'pass' statements when I check the sourcecode of opencv in PyCharm?How to keep frames provided by VideoCapture in OpenCVGrabbing last frame from cv::VideoCaptureStatus of VideoCapture object in OpenCVCan I use openCV4Android to process the video recorded by Android camera?Screen Capture with OpenCV and Python-2.7Opencv Mat function only works if it's not referenced?OpenCV grab does nothing on webcamOpenCV C++ doesn't return false when capture is not workingProper use of cv::VideoCaptureVideoCapture does not open video file
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I wonder why there are all 'pass' statements when I check the sourcecode of opencv in PyCharm?
How to keep frames provided by VideoCapture in OpenCVGrabbing last frame from cv::VideoCaptureStatus of VideoCapture object in OpenCVCan I use openCV4Android to process the video recorded by Android camera?Screen Capture with OpenCV and Python-2.7Opencv Mat function only works if it's not referenced?OpenCV grab does nothing on webcamOpenCV C++ doesn't return false when capture is not workingProper use of cv::VideoCaptureVideoCapture does not open video file
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
0
def __init__(self, *args, **kwargs): # real signature unknown
pass
def read(self, image=None): # real signature unknown; restored from __doc__
"""
read([, image]) -> retval, image
. @brief Grabs, decodes and returns the next video frame.
.
. @param [out] image the video frame is returned here. If no frames has been grabbed the image will be empty.
. @return `false` if no frames has been grabbed
.
. The method/function combines VideoCapture::grab() and VideoCapture::retrieve() in one call. This is the
. most convenient method for reading video files or capturing data from decode and returns the just
. grabbed frame. If no frames has been grabbed (camera has been disconnected, or there are no more
. frames in video file), the method returns false and the function returns empty image (with %cv::Mat, test it with Mat::empty()).
.
. @note In @ref videoio_c "C API", functions cvRetrieveFrame() and cv.RetrieveFrame() return image stored inside the video
. capturing structure. It is not allowed to modify or release the image! You can copy the frame using
. cvCloneImage and then do whatever you want with the copy.
"""
pass
Why there are all 'pass' statements? I want to know how the function is realized specifically.
opencv
asked Mar 24 at 2:32
ScaramouchScaramouch
1
add a comment |
0
def __init__(self, *args, **kwargs): # real signature unknown
pass
def read(self, image=None): # real signature unknown; restored from __doc__
"""
read([, image]) -> retval, image
. @brief Grabs, decodes and returns the next video frame.
.
. @param [out] image the video frame is returned here. If no frames has been grabbed the image will be empty.
. @return `false` if no frames has been grabbed
.
. The method/function combines VideoCapture::grab() and VideoCapture::retrieve() in one call. This is the
. most convenient method for reading video files or capturing data from decode and returns the just
. grabbed frame. If no frames has been grabbed (camera has been disconnected, or there are no more
. frames in video file), the method returns false and the function returns empty image (with %cv::Mat, test it with Mat::empty()).
.
. @note In @ref videoio_c "C API", functions cvRetrieveFrame() and cv.RetrieveFrame() return image stored inside the video
. capturing structure. It is not allowed to modify or release the image! You can copy the frame using
. cvCloneImage and then do whatever you want with the copy.
"""
pass
Why there are all 'pass' statements? I want to know how the function is realized specifically.
opencv
asked Mar 24 at 2:32
ScaramouchScaramouch
1
OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38
add a comment |
0
0
0
def __init__(self, *args, **kwargs): # real signature unknown
pass
def read(self, image=None): # real signature unknown; restored from __doc__
"""
read([, image]) -> retval, image
. @brief Grabs, decodes and returns the next video frame.
.
. @param [out] image the video frame is returned here. If no frames has been grabbed the image will be empty.
. @return `false` if no frames has been grabbed
.
. The method/function combines VideoCapture::grab() and VideoCapture::retrieve() in one call. This is the
. most convenient method for reading video files or capturing data from decode and returns the just
. grabbed frame. If no frames has been grabbed (camera has been disconnected, or there are no more
. frames in video file), the method returns false and the function returns empty image (with %cv::Mat, test it with Mat::empty()).
.
. @note In @ref videoio_c "C API", functions cvRetrieveFrame() and cv.RetrieveFrame() return image stored inside the video
. capturing structure. It is not allowed to modify or release the image! You can copy the frame using
. cvCloneImage and then do whatever you want with the copy.
"""
pass
Why there are all 'pass' statements? I want to know how the function is realized specifically.
opencv
asked Mar 24 at 2:32
ScaramouchScaramouch
1
def __init__(self, *args, **kwargs): # real signature unknown
pass
def read(self, image=None): # real signature unknown; restored from __doc__
"""
read([, image]) -> retval, image
. @brief Grabs, decodes and returns the next video frame.
.
. @param [out] image the video frame is returned here. If no frames has been grabbed the image will be empty.
. @return `false` if no frames has been grabbed
.
. The method/function combines VideoCapture::grab() and VideoCapture::retrieve() in one call. This is the
. most convenient method for reading video files or capturing data from decode and returns the just
. grabbed frame. If no frames has been grabbed (camera has been disconnected, or there are no more
. frames in video file), the method returns false and the function returns empty image (with %cv::Mat, test it with Mat::empty()).
.
. @note In @ref videoio_c "C API", functions cvRetrieveFrame() and cv.RetrieveFrame() return image stored inside the video
. capturing structure. It is not allowed to modify or release the image! You can copy the frame using
. cvCloneImage and then do whatever you want with the copy.
"""
pass
Why there are all 'pass' statements? I want to know how the function is realized specifically.
opencv
opencv
asked Mar 24 at 2:32
ScaramouchScaramouch
1
asked Mar 24 at 2:32
ScaramouchScaramouch
1
asked Mar 24 at 2:32
ScaramouchScaramouch
1
asked Mar 24 at 2:32
ScaramouchScaramouch
1
asked Mar 24 at 2:32
ScaramouchScaramouch
1
1
OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38
add a comment |
OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38
OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38
OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38
add a comment |
0
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OpenCV is not a Python library. It is a C++ library with Python bindings. Many of the functions pass the arguments directly to C++ to instantiate objects and such, so Python does not have introspection capabilities by reading the Python library itself. When it comes to OpenCV---read the documentation heavily, as you won't get the same level of introspection as you would a normal python module.
– alkasm
Mar 24 at 5:38