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Line 431: − ====== MV-MIPI-IMX178M======+ + + − ======MV-MIPI-SC130M, MV-MIPI-IMX296M, MV-MIPI-IMX265M，MV-MIPI-IMX264M，MV-MIPI-IMX287M======+ + + Line 437:
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Mv series camera appnotes 4 rpi/zh (view source)
Revision as of 14:51, 29 March 2023
, 14:51, 29 March 2023→实时预览
===== 实时预览 =====
===== 实时预览 =====
====== 使用gstreamer预览UYVY格式图像 ======
<code>export DISPLAY=:0</code>
<code>export DISPLAY=:0</code>
为了方便进行安装和调试，MV系列相机提供了UYVY模式。UYVY模式支持的最大宽度为2880，使用如下命令可以进行实时预览。
为了方便进行安装和调试，MV系列相机提供了UYVY模式。UYVY模式支持的最大宽度为2880，使用如下命令可以进行实时预览。
* install gstreamer
<code>sudo apt-get install gstreamer1.0-tools</code>
<code>sudo apt-get install gstreamer1.0-tools</code>
<code>sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-ugly gstreamer1.0-tools gstreamer1.0-gl gstreamer1.0-gtk3</code>
<code>sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-ugly gstreamer1.0-tools gstreamer1.0-gl gstreamer1.0-gtk3</code>
* MV-MIPI-IMX178M
<code>v4l2-ctl -d /dev/video0 --set-fmt-video=width=2816,height=2064,pixelformat=UYVY</code>
<code>v4l2-ctl -d /dev/video0 --set-fmt-video=width=2816,height=2064,pixelformat=UYVY</code>
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)2816, height=(int)2064, framerate=(fraction)22/1" ! v4l2convert ! "video/x-raw,format=(string)NV12" ! autovideosink sync=false -v</code>
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)2816, height=(int)2064, framerate=(fraction)22/1" ! v4l2convert ! "video/x-raw,format=(string)NV12" ! autovideosink sync=false -v</code>
* MV-MIPI-SC130M, MV-MIPI-IMX296M, MV-MIPI-IMX265M，MV-MIPI-IMX264M，MV-MIPI-IMX287M
<code>v4l2-ctl --set-selection=target=crop,top=0,left=0,width=$WIDTH,height=$HEIGHT</code>
<code>v4l2-ctl --set-selection=target=crop,top=0,left=0,width=$WIDTH,height=$HEIGHT</code>
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)$WIDTH, height=(int)$HEIGHT,framerate=(fraction)$FPS/1" ! v4l2convert ! "video/x-raw,format=(string)NV12" ! autovideosink sync=false -v</code>
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)$WIDTH, height=(int)$HEIGHT,framerate=(fraction)$FPS/1" ! v4l2convert ! "video/x-raw,format=(string)NV12" ! autovideosink sync=false -v</code>
====== 使用opencv调用GREY格式图像 ======
* install opencv
<code>pip uninstall opencv-python</code>
<code>sudo apt install python3-opencv</code>
* 我们提供了一个简单的[https://github.com/veyeimaging/raspberrypi_v4l2/tree/main/samples/opencv/raw_camera sample]实现此功能：
<code>python ./v4l2dev_2_opencv_show_grey.py --width 640 --height 480 --fps 30</code>
==== 触发模式 ====
==== 触发模式 ====