Upsampling adds more pixels/dots per inch (dpi), but creates blurry images, ugly blocks of color, and high contrast in images. The only way resolution can be improved is by decreasing the image size, or by recapturing the image at a higher quality setting.
Postcrossing is an online project that allows its members to send and receive postcards from all over the world.
cross over, 1  Biology. (of a chromosome segment) to undergo crossing over. 2  to switch allegiance, as from one political party to another. 3  to change successfully from one field of endeavor, genre, etc., to another: to cross over from jazz to rock. 4  to die; pass away.