We all know what scale is. This is the ratio of linear dimensions on a conventional graphic image to the true values of the depicted object. That is, it is the observance of certain proportions during the application of any drawing image or photo editing.
What is scale and why is it needed
A similar method of image transmission is used in absolutely everything, from maps and drawings to ordinary photographs. Yes, that's just not always the right image can be reproduced in full size. In this case, the scale comes to the rescue. Thanks to him, images can be reduced or enlarged, while respecting the necessary proportions, which are indicated on the drawings. What is the scale we already know, so let's talk about its two types.
Zoom scale
This type is used when the full-size image is much smaller than in the drawings. In this case, the proportions of the image (2: 1, 8: 1, 16: 1, 150: 1, and so on) are indicated in a special column. Proportions should be understood as follows: the right digit means that the entire drawing must be divided into centimeters (for example, 1 centimeter), and the left - how many times the object is reduced by 1 centimeter of the drawing image. That is, if we have the designation 2: 1, then this means that 1 centimeter of the drawing line accounts for 0.5 centimeters of the object.
Scale down
This view is used if the object to be drawn is significantly larger than the dimensions of the drawing. In a special graph of proportions, we indicate how many times the object exceeds the image (for example, 1: 2, 1: 250, 1: 1000, and so on). The left digit indicates how many centimeters you want to divide the drawing (for example, 1 centimeter), and the right - how many measuring units per 1 centimeter. For example, we have a map with a scale designation of 1: 2,000,000 cm, which means that there are 2,000,000 centimeters of terrain per 1 centimeter of map (or 20,000 meters, or 20 kilometers per 1 centimeter).
How to scale photos
It is very easy to deal with the compilation of maps or drawings, but it’s quite difficult to understand what the scale of photographs is. Such images have other measurement parameters, namely, resolution, which depends on the number of pixels in this image. When scaling photos, you need to pay attention to the number of pixels, because by significantly increasing the size of a photo with a small number of pixels, we degrade its quality and vice versa. There are various programs with which you can perform these operations, while the image quality does not get worse. Their principle of operation is based on an increase in the number of pixels in a given photograph, as a result of which resolution increases, that is, the size of the reproduced image. Such programs can be found in special stores or downloaded from the Internet, but it is best to buy licensed discs rather than downloading pirated copies that can degrade the performance of your computer and make it impossible to process photos on it.