Re: [sugar] [Activities] Panorama activity
It would be great to incorporate more recording methods into Record. We've plans to also incorporate stop-motion and time-lapse into record also. It could become a behemoth of an activity though... perhaps it might benefit from being broken into different components (a.k.a. tamtamization)? As for Record's UI, it uses windows to allow for its custom fullscreen mode and for embedding widgets over video (seen, for example, in the picture-in-picture modes and the info button). On Fri, Sep 5, 2008 at 10:26 AM, Nirav Patel [EMAIL PROTECTED] wrote: I don't know about integrating it into Record, but the other issues are fairly easy to resolve. I wrote a Python module over the summer to interface v4l2 cameras that returns Pygame surfaces. Capturing images is near instant (~20ms for 640x480 RGB). Autogain and autowhitebalance can be disabled using v4l2 camera controls. There is support in my module for the hflip and vflip controls, but adding additional controls is trivial. Alternately, we could just use a little utility in C to access any v4l2 camera control. Since the module I wrote is for Pygame and is eventually going to be cross platform, adding v4l2 specific stuff to it is probably not the greatest idea. It may just be better to skip sticking it in Record and make a standalone activity, since Record seems to have plenty of issues on its own without a big new feature. There wouldn't be much code duplication if Panorama doesn't use gstreamer anyway. Nirav On Fri, Sep 5, 2008 at 9:26 AM, Benjamin M. Schwartz [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Christoph Derndorfer wrote: | Sweet, I totally missed that! | | Is anyone actively working on integrating that functionality into 'record' | or making it available as a seperate activity? | | Christoph | See http://lists.laptop.org/pipermail/sugar/2008-February/004307.html The Panorama Activity is snot quite barely functional. It might be best to roll this functionality into Record, and Erik Blankinship has expressed some interest in that. However, Record's UI is very unusual, and I am not about to attempt integration with it myself. Also, as you can see in the examples, this process is only likely to work well once the camera's automatic white balance and gain control are deactivated. The only way I know how to do that is to run in Bayer mode. Bayer mode was introduced in a recent gstreamer, but gstreamer was recently downgraded, which leaves me without a known reliable way to access Bayer mode. - --Ben P.S. For Bayer mode info, see http://lists.laptop.org/pipermail/devel/2008-February/011029.html -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkjBM3oACgkQUJT6e6HFtqRowgCfUlngIFr+Gl3jxKRYZAXBNl/x 2hEAnAnoDrrvcd+vIHO68aJthULDKAQC =cvG0 -END PGP SIGNATURE- ___ Devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/devel ___ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar
Re: [sugar] [Activities] Panorama activity
Sweet, I totally missed that! Is anyone actively working on integrating that functionality into 'record' or making it available as a seperate activity? Christoph On 9/5/08, Brian Jordan [EMAIL PROTECTED] wrote: *bump* http://wiki.laptop.org/go/Panorama_camera_activity (code? Nirav is interested in doing something similar!) Brian On Wed, Jun 20, 2007 at 11:56 PM, Benjamin M. Schwartz [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 The XO happens to be perfect for shooting stitched panoramic photographs, due to the swivel design. I tested it out in the OLPCHQ lobby. Then, I wrote a simple panorama stitcher in 50 lines of Python. It runs in 3.4 seconds on my Core Duo, producing this output: http://people.fas.harvard.edu/~bmschwar/lobby_ugly.jpg The results aren't too bad. I also tried stitching this scene with Hugin, the most powerful panorama stitcher I know of. Hugin required significant user intervention and half an hour of computing time, producing this output: http://people.fas.harvard.edu/~bmschwar/lobby_pretty.jpg This scene is unusually difficult because of the huge indoor-outdoor contrast. Given this positive result, I would like to work on a panorama-making activity, possibly inside Capture. I know that at age 10, I loved making panoramas out of photographs. Panoramas provide an immersive way for children to communicate their environments to each other and to the world. - --Ben Schwartz -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGeU4yUJT6e6HFtqQRAv4rAJ9F5wTDfzz9piYzzwGskVVmaqZTiQCgjFru QsRergUtY1iCZS6hIXCHjSM= =v5GB -END PGP SIGNATURE- ___ Devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/devel ___ Activities mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/activities -- Christoph Derndorfer co-editor, olpcnews url: www.olpcnews.com e-mail: [EMAIL PROTECTED] ___ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar
Re: [sugar] [Activities] Panorama activity
If the code is short, how about including it in Pippy as an example python script ? :) -Iain 2008/9/5 Christoph Derndorfer [EMAIL PROTECTED] Sweet, I totally missed that! Is anyone actively working on integrating that functionality into 'record' or making it available as a seperate activity? Christoph On 9/5/08, Brian Jordan [EMAIL PROTECTED] wrote: *bump* http://wiki.laptop.org/go/Panorama_camera_activity (code? Nirav is interested in doing something similar!) Brian On Wed, Jun 20, 2007 at 11:56 PM, Benjamin M. Schwartz [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 The XO happens to be perfect for shooting stitched panoramic photographs, due to the swivel design. I tested it out in the OLPCHQ lobby. Then, I wrote a simple panorama stitcher in 50 lines of Python. It runs in 3.4 seconds on my Core Duo, producing this output: http://people.fas.harvard.edu/~bmschwar/lobby_ugly.jpghttp://people.fas.harvard.edu/%7Ebmschwar/lobby_ugly.jpg The results aren't too bad. I also tried stitching this scene with Hugin, the most powerful panorama stitcher I know of. Hugin required significant user intervention and half an hour of computing time, producing this output: http://people.fas.harvard.edu/~bmschwar/lobby_pretty.jpghttp://people.fas.harvard.edu/%7Ebmschwar/lobby_pretty.jpg This scene is unusually difficult because of the huge indoor-outdoor contrast. Given this positive result, I would like to work on a panorama-making activity, possibly inside Capture. I know that at age 10, I loved making panoramas out of photographs. Panoramas provide an immersive way for children to communicate their environments to each other and to the world. - --Ben Schwartz -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGeU4yUJT6e6HFtqQRAv4rAJ9F5wTDfzz9piYzzwGskVVmaqZTiQCgjFru QsRergUtY1iCZS6hIXCHjSM= =v5GB -END PGP SIGNATURE- ___ Devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/devel ___ Activities mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/activities -- Christoph Derndorfer co-editor, olpcnews url: www.olpcnews.com e-mail: [EMAIL PROTECTED] ___ Devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/devel ___ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar
Re: [sugar] [Activities] Panorama activity
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Christoph Derndorfer wrote: | Sweet, I totally missed that! | | Is anyone actively working on integrating that functionality into 'record' | or making it available as a seperate activity? | | Christoph | See http://lists.laptop.org/pipermail/sugar/2008-February/004307.html The Panorama Activity is snot quite barely functional. It might be best to roll this functionality into Record, and Erik Blankinship has expressed some interest in that. However, Record's UI is very unusual, and I am not about to attempt integration with it myself. Also, as you can see in the examples, this process is only likely to work well once the camera's automatic white balance and gain control are deactivated. The only way I know how to do that is to run in Bayer mode. Bayer mode was introduced in a recent gstreamer, but gstreamer was recently downgraded, which leaves me without a known reliable way to access Bayer mode. - --Ben P.S. For Bayer mode info, see http://lists.laptop.org/pipermail/devel/2008-February/011029.html -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkjBM3oACgkQUJT6e6HFtqRowgCfUlngIFr+Gl3jxKRYZAXBNl/x 2hEAnAnoDrrvcd+vIHO68aJthULDKAQC =cvG0 -END PGP SIGNATURE- ___ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar
Re: [sugar] [Activities] Panorama activity
I don't know about integrating it into Record, but the other issues are fairly easy to resolve. I wrote a Python module over the summer to interface v4l2 cameras that returns Pygame surfaces. Capturing images is near instant (~20ms for 640x480 RGB). Autogain and autowhitebalance can be disabled using v4l2 camera controls. There is support in my module for the hflip and vflip controls, but adding additional controls is trivial. Alternately, we could just use a little utility in C to access any v4l2 camera control. Since the module I wrote is for Pygame and is eventually going to be cross platform, adding v4l2 specific stuff to it is probably not the greatest idea. It may just be better to skip sticking it in Record and make a standalone activity, since Record seems to have plenty of issues on its own without a big new feature. There wouldn't be much code duplication if Panorama doesn't use gstreamer anyway. Nirav On Fri, Sep 5, 2008 at 9:26 AM, Benjamin M. Schwartz [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Christoph Derndorfer wrote: | Sweet, I totally missed that! | | Is anyone actively working on integrating that functionality into 'record' | or making it available as a seperate activity? | | Christoph | See http://lists.laptop.org/pipermail/sugar/2008-February/004307.html The Panorama Activity is snot quite barely functional. It might be best to roll this functionality into Record, and Erik Blankinship has expressed some interest in that. However, Record's UI is very unusual, and I am not about to attempt integration with it myself. Also, as you can see in the examples, this process is only likely to work well once the camera's automatic white balance and gain control are deactivated. The only way I know how to do that is to run in Bayer mode. Bayer mode was introduced in a recent gstreamer, but gstreamer was recently downgraded, which leaves me without a known reliable way to access Bayer mode. - --Ben P.S. For Bayer mode info, see http://lists.laptop.org/pipermail/devel/2008-February/011029.html -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkjBM3oACgkQUJT6e6HFtqRowgCfUlngIFr+Gl3jxKRYZAXBNl/x 2hEAnAnoDrrvcd+vIHO68aJthULDKAQC =cvG0 -END PGP SIGNATURE- ___ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar
