![]() You cannot use upsampling to create detail and subtle color gradations where none existed in the original image. ![]() ![]() Image quality may be reduced because the new pixels are interpolated based on the colors of neighboring pixels the original pixel information is simply spread out. Upsampling increases the resolution of an image by adding more pixels per unit of measure. Higher resolution images contain smaller and more densely packed pixels than lower resolution images. Images created for printing on desktop printers are generally 150 dpi, while professionally printed images are usually 300 dpi, or higher. Typically, images created only for display on computer monitors are 96 or 72 dpi and images created for the World Wide Web are 72 dpi. The resolution you choose depends on how the image is output. Resolution is measured by the number of dots per inch (dpi) when the image is printed. ![]() You can change the resolution of an image increase or decrease its file size. ![]()
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