Hi Kurba, I'm Ulrich, this is classic undersampling, the best way to solve it is to choose you texture resolution far more appropriately, you certainly can't expect good results with such an aggressive undersampling, OpenGL certainly won't help you, and the OSG does have any magical pixie dust to help you either.
If you really really must try and use such an undersampled image then go have a look at 3rd party tools for image processing to see if they can provide edge detection and filtering based on this, or some other specific method to handling such extreme undersampling. Robert. On Mon, Jul 27, 2009 at 11:08 AM, kiruba nantham<[email protected]> wrote: > Hi Hertlein, > Thank you for your reply, > Yes, i accept as you said i am blowing each pixel in the texture to 8x > its size. but what all i want is after making this image bigger (i.e. 8x) > just adding some blur to overall picture so that the edges dostn't look odd. > the problem here is i don't know how to add blur in OSG. if you can give > some tutorial links i can look in to it. > Regards, > Kiruba. > > --- On Mon, 7/27/09, Ulrich Hertlein <[email protected]> wrote: > > From: Ulrich Hertlein <[email protected]> > Subject: Re: [osg-users] Blending Low Resolution Texture to Big Screen > To: "OpenSceneGraph Users" <[email protected]> > Date: Monday, July 27, 2009, 3:01 PM > > On 27/07/09 10:48 AM, kiruba nantham wrote: >> Hi friends, I am new to OSG. i am trying to map my small texture >> (128*128 pixel) to >> Big display (800*800 pixel). i am able to load successfully but i face one >> problem with >> it. the problem is my picture doesn't like smooth, my image looks very bad >> (picture is >> attached with this mail). can any one suggest any way to make my picture >> look proper? > > Increase the resolution. > > There is simply not enough information in a 128x128 image to make it look > nice at the output resolution. Remember that your blowing up each pixel in > the texture to 8x its size. > > Cheers, > /ulrich > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
