Image Restoration/Introduction
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.
Ex. of Image Enhancment
[edit | edit source]- Image Sharpening
- Image editing
Ex. of Image Restoration
[edit | edit source]- 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.
Selecting a suitable image
[edit | edit source]- High resolution
- Well composed
- If scanned, then scanned in high resolution on a clean scanner
- No .jpg artifacting
- Damage not too extensive
Image types
[edit | edit source]- Pencil sketch
- Pen and ink
- Paintings
- Engravings
- Lithographs
- Photography
Obsolete photography methods
[edit | edit source]- Daguerrotype
- Salt paper
- Colloidon glass
- Photochrom
- Sheet Kodachrome
More rarely-seen art
[edit | edit source]- Chalk
- Coloured pencils
- Pastels
- Etc.
Graphics information
[edit | edit source]- Raster v. vector graphics