Is the jaggedness you are seeing only on the borders of the image? If so, then I recommend that you add at least a 1 pixel transparent border around your image. This way the OpenGL system has room on the texture to do alpha-blending on the sides. Just try it with one image to see if it does anything.
If you are seeing jaggedness inside the image, then I suspect that the image is being scaled too much for the rendering system to smooth out. In which case, I recommend that you look into using Corona’s “dynamic image resolution” feature. With this, you would create different sizes of an image where Corona will choose the appropriate image size depending on the resolution of the screen. This way, a higher resolution image would be used for a higher resolution display, reducing the amount of scaling (and hopefully jaggedness/artifacts too) of the image. Have a look at the below links and try this feature with one of your images to see if it solves your problem.
http://developer.anscamobile.com/content/configuring-projects#Dynamic_Image_Resolution
http://blog.anscamobile.com/2011/01/dynamic-image-resolution-made-easy
I hope this helps. [import]uid: 32256 topic_id: 19847 reply_id: 78145[/import]