1,602
edits
Changes
Jump to navigation
Jump to search
Line 99:
Line 99: − + Line 155:
Line 155: + + + + + + + + Line 196:
Line 204: − +
→Stream to OpenCV
<br />
<br />
=== Gstreamer usage sample ===
=== Gstreamer usage samples ===
<code>export DISPLAY=:0</code>
<code>export DISPLAY=:0</code>
==== Stream to OpenCV ====
==== Stream to OpenCV ====
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! videoscale ! "video/x-raw,width=640,height=480" ! videoconvert ! "video/x-raw, format=(string)BGR" ! appsink</code>
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! videoscale ! "video/x-raw,width=640,height=480" ! videoconvert ! "video/x-raw, format=(string)BGR" ! appsink</code>
===V4l2-ctl usage example===
====install v4l2-utils====
<code>sudo apt-get install v4l-utils</code>
====v4l2-ctl test====
*Snap a UYVY raw data picture (1080p mode)
<code>v4l2-ctl --set-fmt-video=width=1920,height=1080,pixelformat=UYVY --stream-mmap --stream-count=1 --stream-to=uyvy-1920x1080.yuv</code>
=== Video Control Toolkits Manual ===
=== Video Control Toolkits Manual ===
Because of the high flexibility of our camera parameters, we do not use V4L2 parameters to control, but use scripts to configure parameters.
Because of the high flexibility of our camera parameters, we do not use V4L2 parameters to control, but use scripts to configure parameters.
Note: If there is only one camera, video node is always video0.
Note: If there is only one camera, video node is always video0.
==== Gstreamer usage Demo ====
==== Gstreamer usage samples ====
<code>export DISPLAY=:0</code>
<code>export DISPLAY=:0</code>