Hi I have generated a png image from GDAL with no_data values to set the black color to transparant with this command line: "gdal_translate.exe --a_nodata 0 -of PNG -ot byte thumbnail.png thumbnail_no_data.png"
the image is loaded correctly in any viewer (Windows , photoshop...) BUT when I load it with osgViewer --image thumbnail_no_data.png the image is zoomed and not dispalyed correctly: [Image: http://forum.osgearth.org/file/n7581916/badImage.png ] if I don not specify the no_data in GDAL transformation it will be displayed correctly in the osgViewer: [Image: http://forum.osgearth.org/file/n7581916/goodImage.png ] When I maked a comparison between them with photoshop , I see that both have a GRAY CHANNEL , but for the image with no_data there is another CHANNEL that is a mask(perhaps to specify where there are the no_data???) So I think that the PNG Plugin can not read the mask generated by GDAL. I hope that someone can help me with this. I have post before this probleme on the GENERAL brunch: http://forum.openscenegraph.org/viewtopic.php?t=12492 The attached images Thank you! ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=55752#55752 Attachments: http://forum.openscenegraph.org//files/tempview_512.png http://forum.openscenegraph.org//files/tempview_hide_419.png _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
