SAGEM
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Resizing TIFF images
A 3" by 5" b&w photo is scanned using a HP 4C flat bed scanner at 300 dpi resolution. The file is printed using Corel Photo Paint 5 on a Fargo Primera Pro printer. The print is acceptable at an image size of 3" by 5". I want to increase the image size to 8" by 10". How do we increase the image size without it becomming pixelated? We have tried increasing the scan greater than 100% and scanning at up to 600 dpi without success. Also tried various smoothing routines but we need a very sharp image. Any ideas?
The number of pixels displayed per unit of length in an image is called the image resolution, usually measured in pixels per inch (ppi). An image with a high resolution contains more, and therefore smaller, pixels than an image of the same dimensions with a low resolution. For example, a 1-inch-by-1-inch image with a resolution of 72 ppi contains a total of 5184 pixels (72 pixels wide x 72 pixels high = 5184). The same image with a resolution of 300 ppi would contain a total of 90,000 much smaller pixels.
Because they use more pixels to represent each unit of area, higher-resolution images can usually reproduce more detail and subtle color transitions when printed than lower-resolution images. However, once an image has been scanned or created at a given resolution, increasing the resolution in Photoshop will not usually improve the image quality because in this case, Photoshop must in effect spread the same pixel information across a greater number of pixels.
The proper image resolution to use for an image depends on how you intend to display or distribute the image. Using too low a resolution for a printed image results in pixelation—large pixels that produce very coarse-looking output. Using too high a resolution (i.e., pixels smaller that what an output device can reproduce) increases the file size unnecessarily and may increase the time required to print or distribute the image. See Screen frequency and image resolution for guidelines on choosing an image resolution.
Because they use more pixels to represent each unit of area, higher-resolution images can usually reproduce more detail and subtle color transitions when printed than lower-resolution images. However, once an image has been scanned or created at a given resolution, increasing the resolution in Photoshop will not usually improve the image quality because in this case, Photoshop must in effect spread the same pixel information across a greater number of pixels.
The proper image resolution to use for an image depends on how you intend to display or distribute the image. Using too low a resolution for a printed image results in pixelation—large pixels that produce very coarse-looking output. Using too high a resolution (i.e., pixels smaller that what an output device can reproduce) increases the file size unnecessarily and may increase the time required to print or distribute the image. See Screen frequency and image resolution for guidelines on choosing an image resolution.
The number of pixels displayed per unit of length in an image is called the image resolution, usually measured in pixels per inch (ppi). An image with a high resolution contains more, and therefore smaller, pixels than an image of the same dimensions with a low resolution. For example, a 1-inch-by-1-inch image with a resolution of 72 ppi contains a total of 5184 pixels (72 pixels wide x 72 pixels high = 5184). The same image with a resolution of 300 ppi would contain a total of 90,000 much smaller pixels.
Because they use more pixels to represent each unit of area, higher-resolution images can usually reproduce more detail and subtle color transitions when printed than lower-resolution images. However, once an image has been scanned or created at a given resolution, increasing the resolution in Photoshop will not usually improve the image quality because in this case, Photoshop must in effect spread the same pixel information across a greater number of pixels.
The proper image resolution to use for an image depends on how you intend to display or distribute the image. Using too low a resolution for a printed image results in pixelation—large pixels that produce very coarse-looking output. Using too high a resolution (i.e., pixels smaller that what an output device can reproduce) increases the file size unnecessarily and may increase the time required to print or distribute the image. See Screen frequency and image resolution for guidelines on choosing an image resolution.
Because they use more pixels to represent each unit of area, higher-resolution images can usually reproduce more detail and subtle color transitions when printed than lower-resolution images. However, once an image has been scanned or created at a given resolution, increasing the resolution in Photoshop will not usually improve the image quality because in this case, Photoshop must in effect spread the same pixel information across a greater number of pixels.
The proper image resolution to use for an image depends on how you intend to display or distribute the image. Using too low a resolution for a printed image results in pixelation—large pixels that produce very coarse-looking output. Using too high a resolution (i.e., pixels smaller that what an output device can reproduce) increases the file size unnecessarily and may increase the time required to print or distribute the image. See Screen frequency and image resolution for guidelines on choosing an image resolution.
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for example, make it 8" at 10" with 300 dpi resolution. On this moment i think, when you enlarge the picture, the dpi drops down to approx. 120 dpi.