Image Restoration/Introduction
From Wikibooks, open books for an open world
This page may need to be Image Restoration is the recovery of an original image x[m,n] from a given degraded image y[m,n] with a priori/posteriori knowledge of the degradation process.
Image Restoration is not the same as Image Enhancement.
Contents |
[edit] Ex. of Image Enhancment
- Image Sharpening
[edit] Ex. of Image Restoration
- Correcting a blurred Image caused by a moving camera.
Image restoration is a set of techniques for restoring historic photographs, sketches, and other archival images in digital format.
The primary software used in this module includes Adobe Photoshop CS3 Extended, GIMP, and Paint.NET.
[edit] Selecting a suitable image
- High resolution
- Well composed
- If scanned, then scanned in high resolution on a clean scanner
- No .jpg artifacting
- Damage not too extensive
[edit] Image types
- Pencil sketch
- Pen and ink
- Paintings
- Engravings
- Lithographs
- Photography
[edit] Obsolete photography methods
- Daguerrotype
- Salt paper
- Colloidon glass
- Photochrom
- Sheet Kodachrome
[edit] More rarely-seen art
- Chalk
- Coloured pencils
- Pastels
- Etc.
[edit] Graphics information
- Raster v. vector graphics
