CAP_PROP_WHITE_BALANCE_RED_V =26, CAP_PROP_ZOOM =27, CAP_PROP_FOCUS =28, CAP_PROP_GUID =29, CAP_PROP_ISO_SPEED =30, CAP_PROP_BACKLIGHT =32, CAP_PROP_PAN =33, CAP_PROP_TILT =34, CAP_PROP_ROLL =35, CAP_PROP_IRIS =36, CAP_PROP_SETTINGS =37, //!<...
众所周知最近在和工友搞SLAM，好家伙工友M1版的MAC+虚拟机跑ROS（其实一开始在英伟达的XAVIER上面跑来着...
CAP_PROP_WHITE_BALANCE_RED_V =26, CAP_PROP_ZOOM =27, CAP_PROP_FOCUS =28, CAP_PROP_GUID =29, CAP_PROP_ISO_SPEED =30, CAP_PROP_BACKLIGHT =32, CAP_PROP_PAN =33, CAP_PROP_TILT =34, CAP_PROP_ROLL =35, CAP_PROP_IRIS =36, CAP_PROP_SETTINGS =37, //!< Pop ...
1 CAP_PROP_POS_FRAMES cv.CAP_PROP_POS_FRAMES 接下来要解码/捕获的帧的基于0的索引。 2 CAP_PROP_POS_AVI_RATIO cv.CAP_PROP_POS_AVI_RATIO 视频文件的相对位置:0 =电影的开始,1 =电影的结束。 3 CAP_PROP_FRAME_WIDTH cv.CAP_PROP_FRAME_WIDTH 视频流中帧的宽度。 4 CAP_PROP_FRAME_HEIGHT cv....
int apiPreference: api首选项。该参数为:Videoio.CAP_ANY,Videoio.CAP_DSHOW,Videoio.CAP_ANDROID等. VideoCapture 中传入的apiPrefreence的可选参数列表如下所示: 复制 //C++:enumVideoCaptureAPIs public static finalintCAP_ANY=0,CAP_VFW=200,CAP_V4L=200,CAP_V4L2=CAP_V4L,CAP_FIREWIRE=300,CAP_FIR...
So the problem is that when you set cap prop exposure the first time the camera is placed in, the exposure is not changed, but if you close the python code and rerun it, it works. Whenever you take the camera out and put it in again and run the code again, the exposure not being...
(total_frames) # returns 21784 print(video_capture.set(cv2.CAP_PROP_POS_AVI_RATIO, 1)) # returns True _ = video_capture.read() time_msec = video_capture.get(cv2.CAP_PROP_POS_MSEC) print(time_msec/(1000*total_frames)) # returns 0.03335926980046518 video_capture.get(cv2.CAP_PROP_POS_...
cv2.VideoCapture(camera_number + cv2.CAP_DSHOW) 是OpenCV在Windows平台下用于指定使用DirectShow作为视频捕获后端的一种方式。这里的 cv2.CAP_DSHOW 是一个常量,表示使用DirectShow(DirectX Show)技术来访问和控制摄像头。 cv2.CAP_DSHOW 参数含义: 当你将 cv2.CAP_DSHOW 与摄像头编号相加时,实际上是告诉OpenCV使用...
double fps = capture.get( cv::CAP_PROP_FPS ); // 此时,fps = 0. if(fps == 0){ // 摄像头的话,获取到的帧率为零。为了能够输出视频,需要自己设置帧率。 fps = 24; // 设置帧率。fps: frames per second. } cv::Size size( (int)capture.get( cv::CAP_PROP_FRAME_WIDTH ), ...
# Except 'CAM_SELECTED', all other settings are optional for faster launch of webcam in Windows cam = cv2.VideoCapture(CAM_SELECTED, cv2.CAP_DSHOW) # CAP_DSHOW enables direct show without buffering cam.set(cv2.CAP_PROP_FRAME_WIDTH, CAM_WIDTH) # Set width of the frame ...