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Image acquisition package: Difference between revisions
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If you want to report a bug: [[Image_acquisition_package#Reporting_bugs]] | If you want to report a bug: [[Image_acquisition_package#Reporting_bugs]] | ||
'''image-acquisition will not work on Windows as far as there is not port of v4l2 (standing for ''Video for Linux 2'')''' | |||
== Example session == | == Example session == | ||
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octave:> set(obj, "VideoFormat", "RGB3"); | octave:> set(obj, "VideoFormat", "RGB3"); | ||
=== List available video resolutions === | === List available video resolutions === | ||
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octave:> set(obj, "VideoResolution") | octave:> set(obj, "VideoResolution") | ||
ans = | ans = | ||
640 480 | 640 480 | ||
160 120 | 160 120 | ||
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octave:> set(obj, "brightness") | octave:> set(obj, "brightness") | ||
ans = | ans = | ||
scalar structure containing the fields: | scalar structure containing the fields: | ||
min = 0 | min = 0 | ||
max = 255 | max = 255 | ||
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octave:> image(img) | octave:> image(img) | ||
octave:> imwrite(img, "ex1_a.png") | octave:> imwrite(img, "ex1_a.png") | ||
octave:> [img, seq, t] = getsnapshot(obj); | octave:> [img, seq, t] = getsnapshot(obj); | ||
octave:> seq | octave:> seq | ||
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octave:> t | octave:> t | ||
t = | t = | ||
scalar structure containing the fields: | scalar structure containing the fields: | ||
tv_sec = 10281 | tv_sec = 10281 | ||
tv_usec = 779303 | tv_usec = 779303 | ||
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There might be some warnings like "warning: function xyz shadows a built-in function" at start. | There might be some warnings like "warning: function xyz shadows a built-in function" at start. | ||
Exit octave and add libv4l2_debug.log to your bug report | Exit octave and add libv4l2_debug.log to your bug report. The logfile libv4l2_debug.log is overwritten between open/close so you have to rename it if you run different scripts. | ||
Consider running the included tests: | Consider running the included tests: | ||
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octave> test @videoinput/set | octave> test @videoinput/set | ||
octave> test @videoinput/getsnapshot | octave> test @videoinput/getsnapshot | ||
Run the compliance check (perhaps also with -s) | |||
v4l2-compliance -d /dev/video0 | |||
== Build source from mercurial repository == | == Build source from mercurial repository == | ||
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'''Warning: You really should use the <pkg install -forge> method described above if you are not sure what you are doing here.''' | '''Warning: You really should use the <pkg install -forge> method described above if you are not sure what you are doing here.''' | ||
Get the source | Get the source and build it yourself. The build dependencies for Debian GNU/Linux jessie are '''libv4l-dev''' and '''libfltk1.3-dev''' or '''libfltk1.1-dev'''. You also need the GNU autotools to generate the configure script. | ||
$ hg clone http://hg.code.sf.net/p/octave/image-acquisition octave-image-acquisition | $ hg clone http://hg.code.sf.net/p/octave/image-acquisition octave-image-acquisition | ||
$ cd octave-image-acquisition/ | $ cd octave-image-acquisition/ | ||
$ | $ make install | ||
== make check == | == make check == | ||
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$ cd octave-image-acquisition/devel | $ cd octave-image-acquisition/devel | ||
$ make check | $ make check | ||
octave -q run_tests.m | octave -q run_tests.m | ||
../src/__v4l2_handler__.cc........................ PASS 3/3 | ../src/__v4l2_handler__.cc........................ PASS 3/3 | ||
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@videoinput/getsnapshot........................... PASS 4/4 | @videoinput/getsnapshot........................... PASS 4/4 | ||
imaqhwinfo........................................ PASS 1/1 | imaqhwinfo........................................ PASS 1/1 | ||
Summary: | Summary: | ||
PASS 20 | PASS 20 | ||
FAIL 0 | FAIL 0 | ||
If there are tests which FAIL, then please have a look at the generated fntest.log and add it to your bug report. | If there are tests which FAIL, then please have a look at the generated fntest.log and add it to your bug report. | ||
[[Category:Octave Forge]] | |||