Many thanks for your fast reply and patch Brian. I can use the v4l2ucp gain control after applying the patch, and the image really improved :).
I need to do some things to get a better quality: 1*To fix some weird colour problems...grayscale?: Insert the module, connect the cam, test with mplayer, disconnect the cam, remove the module, insert the module, connect the cam. I don't know why this happens, but I can live with it, I only need to insert the module one more time. Before and after doing that, the exposure value is too low,and the noise in the image is really visible. I didn't try it with good light conditions. 2*If I load the module using auto_exposure=0 I get better results. 3*Adjust exposure/gain values with v4l2ucp I'll continue testing the module. Thanks again to all the microdia developers. You are doing a good job. I hope this helps someone. Depaz On Jan 27, 7:57 am, Brian Johnson <[email protected]> wrote: > Yes the ov7660 sensor that the 627b camera uses currently does not > have gain support please try this quick patch and see if it works > correctly for you. > > On Tue, Jan 27, 2009 at 12:32 AM, Depaz <[email protected]> wrote: > > > On 25 ene, 04:29, nhale25 <[email protected]> wrote: > >> Aha, you've got it. I've installed everything to the right place and > >> am having success now! > > >> To completely document what I've done, for anybody else reading... > > >> * download at least version 0.5.8 of libv4l > >> * download this > >> patch:http://groups.google.com/group/microdia/attach/b4b3d001b02f388a/0001-... > >> * place patch in the newly downloaded libv4l directory > >> * in a terminal : > >> patch -p1 < name-of-the-patch-you-just-downloaded > >> make > > >> * if it's a Debian based system (you want it to end up in /usr/lib), > >> in a terminal: > >> sudo make install PREFIX=/usr > >> * otherwise, in a terminal: > >> sudo make install > > >> Thats what worked for me, anyway. Thanks Brian and GWater for your > >> help :) > > >> Nick > > > I tried the current sn9c20x module after downloading/patching/ > > compiling libv4l 0.5.8, and the flickering finally stopped, great :). > > Now I'm trying to improve the image quality using v4l2ucp, I have a > > brighter image and faster fps using the windows drivers (In low light > > conditions). I suppose that increasing the gain is the solution, but > > v4l2ucp gives me this error: Unable to set gain. > > > If I load the sn9c20x module adding auto_gain=1, the lighting improves > > and the fps work nicely, but the image is too noisy and it's in > > grayscale. If I unload the module and I load it again without > > parameters, the grayscale problem dissapears, and the webcam continues > > using auto_gain... weird, but that's how I'm using it at night. The > > autogain is disabled only after restarting the computer. > > I've read that gain support has been added recently, but Is there a > > way to increase it without using auto_gain? > > > Many thanks Brian and GWater for your great work with the driver :). > > And thanks to nhale25 too. > > > -- > > Again, sorry my english ;). If you need more information let me know. > > > > 0001-Add-gain-for-ov7660-sensors.patch > 1KViewDownload --~--~---------~--~----~------------~-------~--~----~ Lets make microdia webcams plug'n play, (currently plug'n pray) To post to this group, send email to [email protected] Visit us online https://groups.google.com/group/microdia -~----------~----~----~----~------~----~------~--~---
