Motion Picture Restoration

What is a line scratch?

Definition: Scratches are long and vertical lines of bright or dark intensity, oriented more or less vertically over the image, with width from 3 to 10 pixels

Why it happens?: scratches are caused by the abrasion of the film material during the film transport or the developping process

Difficulty of the automatic detection:
  • the same location in subsequent frames
  • lines also as natural parts of the scene (false alarms)


The Spatial Models:


The Temporal Models:



Main references are:

  1. A.C. Kokaram, Motion Picture Restoration: Digital Algorithms for Artefacts Suppression in Degraded Motion Picture Film and Video, Springer-Verlag, April 1998.
  2. P. Schallauer, A. Pinz, W. Haas, "Automatic Restoration Algorithms for 35mm Film", VIDERE: Journal of Computer Vision Research , The MIT Press, vol.1, n.3,1999.

About Us

DIPLab (Digital Information Processing Laboratory) is a Laboratory devoted to digital information processing, with particular reference to signal, image and video processing.

Our Contacts

Via Antonio Scarpa 16
00161 Roma (Italy)

(+39) 064976 6633
(+39) 064976 6648