Processing method of printed scan

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When we are designing, we often encounter some scanned manuscripts, but when scanned into the computer, we often find that the color is different from the color of the scanned original because of the scan or the monitor. If we readjust, we will find that the printing or printing color is not the same. . Some people will adjust by chromatography, but it is more troublesome. Through practical experience, I have summarized a more effective method, and I will introduce it to you here. The method is to observe the dots with a magnifying glass to roughly estimate the color value.

Now give an example to explain in detail: after scanning the computer draft, use the eyedropper tool in PHOTOSHOP to click on a certain position in the figure to view the color value, and then carefully observe the dots with a magnifying glass (about 10-15 times magnification) at the same position in the original picture This result: If the two adjacent dots are separated, you can temporarily determine that the color value is less than 50%; just connected together, it is 50%. When the two dots are dissolved together, it is determined to be greater than 50%.

In the second step, if separated, the distance can be estimated. If the distance between two dots is within the diameter of a dot, the estimated color value is between 25% and 50%, which is greater than the diameter of a dot, at 0% ～ 25%; if dissolved together, the distance between the intersection of two dots is less than the radius of the dot, then the color value is 50% ～ 75%, if the junction is larger than the radius, the color value can be estimated at 75% ～ 100%.

The third step is to divide the color values ​​more finely on the basis of the above.

To be viewed separately in four color dots, the approximate color can be compared with the manuscript on the computer. If the color difference is not large, you can not adjust it. If the difference is too large, you must adjust it in the curve. In addition, when adjusting the curve, it should be noted that the entire image must have layers, that is, the black at the deepest place should be more than 75%, and the entire image must be breathable. Of course, this is not the only criterion, mainly because the actual combat experience is the most important. In addition, look at a few local colors, because the scanning effect of the scanner is usually the best in the middle, and the surrounding effect is worse.

But everyone should note that the spot color version can not see the dots, its color is generally seen through the color spectrum, if you are familiar with it, you can directly estimate the approximate color, which requires some experience.

If you want to get very good scanning results, it is best to go to a professional scanning company for scanning, which is called "electricity division" in professional.

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