In the field of computer graphics, linear interpolation is called 'lerp'. This is very widely used.

I'm curious about why it is called so. I know it is listed in the Jargon file. The file says it is quasi-acronym of linear interpolation but why are L, E, R, and P chosen? In the first place, is it linear interpolation? or linear interpolation? or other?

I want to know exact origin.

Multiposting: https://ja.stackoverflow.com/questions/71189

  • 1
    You have searched online and have found an acronymic explanation based on Linear Interpolation. What more can be said?
    – Anton
    Oct 15, 2020 at 10:12
  • As I commented in @Greybeard 's post, I don't think linear interpolation is logical, as well as other three patterns.
    – v..snow
    Oct 15, 2020 at 10:44
  • It's nerdism. It doesn't need to follow any "rules".
    – Hot Licks
    Oct 15, 2020 at 11:57

1 Answer 1


is it linear interpolation?


IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 13, NO. 5, MAY 2004: “Linear Interpolation Revitalized” Thierry Blu, Member, IEEE, Philippe Thévenaz, Member, IEEE, and Michael Unser, Fellow, IEEE

The dotted lines indicate the L2 interpolation error:

It is clear that

Linear Interpolation reduces to L-Interpolation, which reduces to L Interp, which reduces to Lerp.

In contrast, linear interpolation is entirely illogical and seems to be a selection of random, emphasised and unemphasised letters.

  • I regret to point out that a question is not an answer.
    – Anton
    Oct 15, 2020 at 10:12
  • I have added to my answer. I hope this helps.
    – Greybeard
    Oct 15, 2020 at 10:29
  • I think interpolation -> erp is also illogical. Finally mid part is taken and it's not seems essential part. Can you present other terms which is shorten into mid part in the same way?
    – v..snow
    Oct 15, 2020 at 10:39
  • @v..snow I think interpolation -> erp is also illogical. I'm not sure how you can think that when "Linear" reduces to an intial "L".
    – Greybeard
    Oct 15, 2020 at 11:00
  • 3
    Lint was already taken.
    – rajah9
    Oct 15, 2020 at 11:13

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