Hi Michael,
A few tips to get better video capture quality in highly dynamic motion
situations:
* Motion blur is not caused by low frame rate, it is caused by:
* rolling shutters - global shutters exhibit much better motion capture
* poor dynamic range - most sub $60 web cams have
I have successfully followed Michael Darling's guide. And I make an updated
one http://vuanhtung.blogspot.com/2014/04/and-updated-guide-to-get-hardware.html
Full credit to Michael Darling and Lemoneer :). My guide is only intended
to update the steps.
--
For more options, visit
Adam,
If your issue is a low frame rate coming from the PS3Eye, I have written
about this problem here http://blog.lemoneerlabs.com/post/BBB-webcams
To make a long story short, the transfer method the PS3Eye uses to transfer
data over USB doesn't work on the BBB at high frame rates and/or high
Mathew,
Thank you so much for taking the time to respond. I have forwarded you
message you my collaborator Shanshan who is working more on the software
side of things.
She will be in touch.
Thanks again
Adam
*Adam Ben-Dror *| ben-dror.com | @adambendror
http://www.ben-dror.com/
On 2
My first question for you would be which pixel format are you capturing
in? If you do a v4l2-ctl -d /dev/videoX --list-formats-ext in the
command line (where X is 0, 1, ... whatever your C920 is) you can see the
various pixel formats, resolutions, and frame rates supported by the camera.
For
Hello, ive been reading through the group and found i have found it very
helpful. i am running an odroid u2 with ubuntu 12.11 and opencv 2.4.6.1.
i used the code i found in git
:/mdarling39/https://github.com/mdarling39/LinuxVision/blob/master/OCVCapture.cppto
capture from a logitech c920. i
Hello, ive been reading through this group and found it very useful. i am
using an odroid U2 with a logitech c920, on ubuntu 12.11 and opencv 2.4.6.1
ive used the custom capture code found
https://github.com/mdarling39/LinuxVision/blob/master/OCVCapture.cpp to
capture. while it certainly uses
Thank you very much for both of your responses. I will take a look at the
code you both suggested.
In response to Matthew, the ODroid so far has proven to be great at almost
everything. I have already turned off auto exposure and auto focus. The
platform I have the camera on moves often
Okay, so the problem you're having has to do with bugs in OpenCV, itself.
Unfortunately, the capture methods in OpenCV do not set the camera
properties correctly for video4linux devices. In other words, you may
write the line of code to set the frame rate to 30 fps, but the camera
isn't actually
If you bypass OpenCV and capture directly like we did, you should test to
see if you can capture successfully in YUYV format. OpenCV can convert
YUYV to a Mat with less than 3% cpu use. If you capture in MJPEG, you will
see cpu use of 90% or more to convert the image to a Mat. This isn't so
bad
I am working with the C920 on an ODroid, similar to the BBB. I am also
having a problem capturing more than 15fps in OpenCV, however, I need to
use OpenCV for doing processing on the video. Since I am not just grabbing
frames, I can't do something like framegrabber. Is there anyone who has
All you have to do is adapt the frame grabber code for your needs. I
actually went ahead and rewrote the capture code to be object oriented so
that I could conveniently use it with OpenCV's C++ interface. You might
find some of my code helpful as an example to work from. It is in a public
git
To piggy back on Mike's response, when we were testing the capture rate of
the BBB, we used a modified version of framegrabber that is attached to
this article
http://blog.lemoneerlabs.com/post/bbb-optimized-opencv-mjpeg-stream
It allows you to set all the parameters the regular framegrabber
Glad to hear our work is helping others. Let us know how your endeavors go.
-Matthew
On Sun, Nov 3, 2013 at 3:22 PM, josiasinaciocan...@gmail.com wrote:
Excellent, excellent thread! I just purchased my BBB yesterday for a
personal project, and I've been reading for many many hours how and
Excellent, excellent thread! I just purchased my BBB yesterday for a
personal project, and I've been reading for many many hours how and what
would be the best way to stream video from the BBB to a PC over WiFi with
the lowest latency as I could get. This thread, including all the links
that
Witherwax
-Original Message-
From: shedmeister j...@fiocca.net
Sent: 10/3/2013 10:41 PM
To: beagleboard@googlegroups.com beagleboard@googlegroups.com
Subject: [beagleboard] Re: problems with webcams
Hi Mike,
Yes, I am doing additional OpenCV processing, and have 4 video windows
displayed, 2
Hi Mike,
Yes, I am doing additional OpenCV processing, and have 4 video windows
displayed, 2 being updated in real-time (hah!). I have capture running
in a separate thread. My frame processing rate is well under 1 fps, so I'm
ecstatic with 24 fps capture rate.
Thanks again!
Jim
--
For
-o is not used to indicate which frames to convert to OpenCV Mats and
requires an integer argument
should read
-o is now used to indicate which frames to convert to OpenCV Mats and
requires an integer argument
On Thursday, September 26, 2013 6:46:39 AM UTC-5, Matthew Witherwax wrote:
Mike,
Yeah. I did a make install step that saved all of the files to
/usr/local/lib and /usr/local/include. The thumb drive was just for
temporary storage while building.
On Monday, September 23, 2013, Matthew Witherwax wrote:
Mike,
I look forward to your write up. I am glad to hear distcc worked
19 matches
Mail list logo
