How to Keep Images Clear in Large Format Color Output

To obtain high-quality output in large-format color output, you must pay attention to the quality of the source file. There are two main ways to obtain a source file by scanning the material. The performance of the scanning device at this time has a decisive influence on the quality of the generated file. The quality of the files obtained by scanning the same material on different devices is not the same. Another way to obtain a source map is to select directly from an off-the-shelf electronic photo library. At this time, the user cannot select the source map accuracy. In theory, the accuracy of the source file should be no less than 1/4 of the output accuracy in the case of a 1:1 case. If a 1010CC photo is to be enlarged to 100100CC and output at 720dPI, the photo should be scanned with a resolution of no less than 1800dPI (the formula source file dPI-magnification factor X output dPI/4). If the accuracy of the original document is less than 1/4, the image will have a noticeable graininess and affect the picture quality. Being too large will cause the file to be overly affected by the speed of doing the drawing. In actual use, the user often encounters such a problem that the accuracy of scanning when scanning a photograph exceeds the mechanical resolution of the scanner. At this time, the user only needs to scan the entire photo with the highest mechanical resolution of the scanner. Do not use the software interpolation function of the scanner to improve the accuracy of the file. This has the advantage that the generated file is smaller and the effective information of the image is acquired. The hundred scan time is shorter. The user can perform the image processing at a faster speed and only use the interpolation algorithm in the image processing software to increase the file accuracy before outputting or when needed. It is best to turn it on if the RIP software has a jaggies feature. Example 1010CC photos require a 1800dPI scan scanner with a mechanical resolution of 60OdPI. At this point, the scan should be done with 600dP accuracy. The scan generates much smaller files. On this basis, the image processing speed is much faster than that of Kawada 00dPI. Increase the accuracy of the file before adding text or printing. To get a better scan requires more quality material. The sorting quality of the different types of material is in turn the color positive photo print. Due to color reproduction problems, non-professionals are advised not to use colored fish fillets. The key to printing the most common prints is to select the majority of them. The user can first compare the local parameters with different parameters to find out the best parameters. Note: The optical resolution of the scanner refers to the precision of the optics in the scanner. Mechanical resolution refers to the scanner's mechanical movement accuracy, similar to hardware interpolation. Software resolution refers to the resolution a scanner can achieve using an interpolation algorithm.

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