<div dir="ltr"><div>Hi Howard,<br><br></div><div>Welcome! Try forcing the ccd size. Did you do any barrel distortion correction first? This is something ODM doesn't do well (yet) as it only does 3-parameter (not 6-parameter) distortion corrections. This is something that needs worked into the toolchain in the near future.<br><br></div><div>References:<br></div><div><br></div><div>There's a calibration class up here from Cole: <a href="https://github.com/colek42/TrackIt/blob/master/catkin/src/stabilize/src/calibrate.py">https://github.com/colek42/TrackIt/blob/master/catkin/src/stabilize/src/calibrate.py</a><br><br></div><div>plus Alex' work here (GoPro2 only, but a good example): <a href="https://github.com/wildintellect/lenscorrection">https://github.com/wildintellect/lenscorrection</a><br><br></div><div>Finally, see Jan Erik Solem's work here for a full calibration solution:<br><a href="http://www.janeriksolem.net/2014/05/how-to-calibrate-camera-with-opencv-and.html">http://www.janeriksolem.net/2014/05/how-to-calibrate-camera-with-opencv-and.html</a><br><br></div><div>Once you've done the correction and cropped, you'll need to estimate the ccd size of the cropped area, I think, and then it should feed in just fine.<br><br></div><div>Cheers,<br></div><div>Best,<br></div><div>Steve<br><br><br></div><div><br><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, May 10, 2015 at 1:20 PM, Howard Butler <span dir="ltr"><<a href="mailto:howard@hobu.co" target="_blank">howard@hobu.co</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">All,<br>
<br>
So I have a 2 min 720 video from a GoPro Hero 3 Black that I ripped out 126 images out of using ffmpeg. I want to attempt to start with that.<br>
<br>
When I attempt to run them, I get the following error:<br>
<br>
> no CCD width or focal length found for image-100.jpg - camera: “ "<br>
<br>
Of course this is a FAQ, but my pattern isn’t quite the same. If I try —force-focal 5.76, which is the GoPro entry in the json file, it still blows up.<br>
<br>
Ideas?<br>
<br>
Thanks,<br>
<br>
Howard<br>
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