Picture restoration is a very technical job that requires in depth knowledge of photography, analog and digital, in order to perform the task correctly. A competent photo restoration service would have many different equipment and techniques that are required for the task. These would include but are not limited to a computer, a scanner, photo editing software and detailed understanding of how the program works.
When clients would request for a photo restore, they expect the photo to be clean, free from graininess, and it should include all the elements that the source image had originally before it needed restoration.
The technique of photo restoration only came into popularity when software and computer applications like Adobe Photoshop or The GIMP came around to be sold to the mass market. Sold to edit any kind of bitmap file, the programs were then also perfect for photo editing. These programs are used to eliminate unwanted elements in the source picture like stains, creases or the discoloration of certain parts. The original image would have to be scanned first and then uploaded into a computer in order to be edited for restoration. Photo restoration specialists would then analyze the original pictures former qualities like color and sharpness and then proceed to make the necessary touch-ups to restore the photo.
Using the technique of digital photo restoration, one can repair and restore all the different kinds of analogue photographs from the old daguerreotype to the Polaroid, as long as they have a high quality scan from the source image. These scans are then saved onto a digital archive so that the photo can be saved for future use for any number times. Imperfections are taken out from the photograph manually, by digitally painting over them carefully, sometimes even pixel by pixel. The use of layers in the photo editing software is then employed in order to leave the original image untouched. Unwanted discoloration in the picture are removed and the image's contrast or sharpening can be altered or restored as close as possible to in order to closely follow the range of detail that was in the original. The newer programs like Photoshop Creative Suite come with various filters installed so that the restorer can easily eliminate those scratches and dust particles from the scan. Furthermore, there are techniques for fixing the hue and the saturation of the digital image in order to match the original picture as well.
All in all, there are various techniques that can be employed to restore an old and damaged photo. With proper training and exposure to the tasks involved, one will be able to do photo restoration easily.