In our case, that’s an additional factor of three times. The net effect is that if you print an image that is less than that (say our 100 DPI image above), then the printer (or your printing software) must also magnify that image again. ![]() Most printers print at resolutions of at least 300 DPI, if not much, much higher. It’s the same image as displayed above, just magnified You can see the image is already starting to get a little blurry. Here’s a small portion of that image when magnified four times: Now, if I want to print that picture on an 8-1/2-inch-wide paper, using eight inches as the printable area, that means the printing process will need to make that picture four times wider (as well as four times higher). On my screen, it measures approximately two inches across, meaning that my screen is, roughly, 100 dots per inch, or DPI. This cute puppy is a 200- pixel-wide image. ![]() I mention that because, in essence, it’s exactly what you’re asking for. Yes, there are “enhancements”, of a sort, but they all involve trading off other aspects of the image - typically decreasing the image fidelity in order to, say, increase contrast, change colors and the like.īut no enhancement will take a small, blurry image and turn it into a large, crisp one. If a picture has low resolution, it has low resolution. The cops identify the criminal and save the day.Īt least not the magical “enhancement” they’re talking about. Like magic, the blurry photo of the car in the distance gets crisper and crisper until the image can be magnified and the license plate easily made out. They frequently take significant liberties with what is and is not actually possible.įor example, a frequent scenario has a bunch of detectives looking at a blurry photo of a car in the distance, and the person in charge directs the resident computer guru to “enhance it”. I get frustrated watching TV crime shows sometimes, mostly because I know too much. The complex answer, of course, is: it depends. ![]() Not most of the time, and not with what you’re asking for. This is a simple question that turns out to have both a very simple and a fairly complex answer.
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