How do I resize an image to scale?

How to Reduce the Size of an Image Using GIMP

1. With GIMP open, go to File > Open and select an image.
2. Go to Image > Scale Image.
3. A Scale Image dialog box will appear like the one pictured below.
4. Enter new Image Size and Resolution values.
5. Select Interpolation method.
6. Click the “Scale” button to accept the changes.

Why may interpolation be needed when resizing an image?

Image interpolation occurs when you resize or distort your image from one pixel grid to another. Image resizing is necessary when you need to increase or decrease the total number of pixels, whereas remapping can occur when you are correcting for lens distortion or rotating an image.

Should I get a 3 pixel wide Lanczos filter?

lanczos windowed sinc is clearly superior in most cases. But it may not be optimal to have a 3pixel wide lanczos filter. It may cause a bit of ringing tough. – joojaa Dec 24 ’14 at 15:36

How do I use sinc/Lanczos in GIMP?

GIMP 2.4 to do this because you need to use the “Sinc (Lanczos3)” option under Quality>Interpolation in the Scale Image dialog. I checked the version I have and, lo and behold, 2.10.4 does not seem to have this option. No need to go as far back as 2.4, Sinc/Lanczos is available in Gimp 2.8.

Is a 3 pixel wide Lanczos windowed sinc better?

1 lanczos windowed sinc is clearly superior in most cases. But it may not be optimal to have a 3pixel wide lanczos filter. It may cause a bit of ringing tough. – joojaa Dec 24 ’14 at 15:36

How do you resize an image?

The Basics Resizing an image involves the process of creating and iterating through the pixels of a target image and sampling areas of a source image to choose what color to implement for each pixel. The sampling algorithm chosen affects the target color and can dramatically alter the result.