How to Make a Dilation
A dilation measures increases in shape size, which is typically denoted by a multiplication factor. Calculating a dilation describes how many times larger a resized image is when compared to the original size. Applying a dilation is useful when resizing images to ensure the image's aspect ratio is maintained. This occurs when both its horizontal and vertical measurements are equally magnified. As an example, a “2X” dilation increases a 600-pixel by 800-pixel image to 1,200 by 1,600 pixels.
Other People Are Reading
Instructions
-
Calculating a Dilation
-
1
Look up the image measurements before and after resizing. In most graphics programs, there is an “image properties” feature, which displays the image’s dimensions.
-
2
Divide the new horizontal measurement by its previous measurement. The horizontal measurement is always listed first. In the previous example, dividing 1,200 by 600 calculates the “2X” dilation.
-
-
3
Divide the new vertical measurement by its previous measurement. The vertical measurement is the second figure. In the example, dividing 1,600 by 800 confirms the dilation is “2X.” The vertical and horizontal dilation should be equal.
Applying a Dilation
-
4
Look up the current image's horizontal and vertical dimensions.
-
5
Multiply the horizontal image size by the dilation factor. In the example, multiplying 600 times 2 calculates the new horizontal size of 1,200.
-
6
Multiply the vertical image size by the dilation factor. In the example, multiplying 800 times 2 calculates the new vertical size of 1,600. Therefore, the new image size is 1,200 by 1,600.
-
1
