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In a photo editor like photo shop. Be aware even after enlarging a photo, it will not have more info. Small pictures have little info, and will be blurred when enlarged.
Here is a conversion chart for DPI (Dots per inch) to LPI (Lines per inch) or PPI (Pixels per inch)
180 DPI................31 lines/inch or 68 PPI 360 DPI................63 lines/inch or 138 PPI 720 DPI................127 lines/inch or 280 PPI 1440 DPI..............255 lines/inch or 561 PPI 2880 DPI..................510 lines/inch or 1122 PPI
If you plan to enlarge your image, it is better to enlarge it when you're scanning rather than in your application. Each time you modify an image, you lose some quality. Keep in mind when you enlarge a small photo, such as a 35 mm slide or wallet-size photo, you'll need to scan at a high enough resolution to retain your image quality, but not so high that your file size is too large to be efficient. You must manually adjust the resolution (dpi) to maintain the same image quality when you resize your image. For example, if you have a 300 dpi 2 x 2-inch image that you want to enlarge to 4 x 4 (a factor of 200%), increase the Scale setting to 200% or change the resolution to 600 dpi.
yes you can scan a tiny image and print it out larger, but you will lose quality if you are going from very small to very big.
If you want to try it i recommend a program called Paint.NET (it is like a photo shop except totally free) here is a link to get it. http://www.getpaint.net/download.html
You can scan the image and open it in Paint.net then go to this website which gives you excellent step by step instructions on how to re size an image: http://www.wikihow.com/Resize-an-Image-With-Paint.Net
after you are complete with that you can print it out and you will have an A4 paper size (Equivalent size in inches is 11.69" long and 8.27" wide.)
hmmm... just the set pixels properties to medium..maybe the pixels properties is to high..it can cause long time scanning and large images results ..thank you
If you mean to enlarge a small low resolution image and make it a large image with good clarity and resolution, basically you can't really do this...
Well you can up to a point, say doubling the pixel size at maximum, but if you don't have the image size and qualitry to begin with, enlarging will rarely produce a clean image if you are enlarging it by a large factor.
Of course you can enlarge some images really well by say 25% by enlarging then using some sharpening filters like "Unsharp Mask" etc. You can get reasonable results this way, but if you are trying to say enlarge a 100 pixel wide image to 1000 pixels wide, it just won't work terribly well no matter how much sharpening or filtering you do!
Try scanning the instructions you do have into a computer and, then, use the magnification feature in the program that the scanned image is in to enlarge the print.
I discovered that a small strand of hair had attached itself to the white underside of the platen cover near its bottom edge and this was apparently being treated by the scanner as part of the photo to be scanned. Once I removed the hair, scanned photo images are again correctly being optimised in the frame.
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