Digital photograph restoration uses a variety of image editing techniques to remove visible damage and aging effects from digital copies of physical photographs. Raster graphics editors are typically used to repair the appearance of the digital images and add to the digital copy of the photo where pieces of the physical photograph are torn or missing. Evidence of dirt, scratches, and other signs of photographic age are removed from the digital image manually, by painting over them meticulously.
Before any digital restoration can be performed, the original photo (or film negative) needs to be scanned. This step is critical, since it ultimately determines your restoration's potential. Needless to say, try and use the best scanning equipment and software at your disposal. Everything else being equal, flatbed scanners usually provide much higher quality than similar sheetfed scanners.
Colour profiling is a professional standard to interpret colour across all the operating systems, computer applications, input and output devices. One of the biggest challenges in photography is how to achieve perfect colour of the images. Colour of the images have to be accurate and consistent and it is determined by the colour temperature of the subject, which in turn is governed by he colour temp. of the lights used. Changes between different images is influenced by the reflective colours within the environment of the setup also. Thus each and every image should be colour calibrated, using colour swatches (QP card) and grey cards inserted within the image. This way a test shot is taken with reference colours and used as a reference for colour profiling the of the image. Once this image is taken, the grey card and colour swatches are removed for the final shot.
Old photos have likely incurred plenty of imperfections in the form of dust marks, rips or tears, stains, scratches and crinkles. These can distract from the image- particularly if located on or near someone's face: By far the best tools for removing these are the clone stamp and healing brush tools (in Adobe Photoshop and most other editing software).
Photo touch up is basically a skill which makes an image all set for the final & sleek output. Adobe Photoshop and most other editing software are used in this process. This is an enhancement of colors, contrast, white balance and sharpness. It also includes the procedure of noise removing or removing visible flaws on skin or materials.