When a service provider gets golden chance to hide imperfections and at the same time enhance the beauty of a picture, any customer is bound to be impressed. Masking in image processing is a boon that can be easily tapped for its features. A mask can be used as an option for many editing techniques. It is a greater tool than the eraser as it has more flexible operational areas.
A mask is also called a layer and it appears as a veil over the painted layer of the picture. The mask appears as a black and white of the original picture or the areas that are masked. When a vector method is applied the black pixel value is 0 and white value is 1. When a mask is put on certain areas then those areas cannot be edited. This means some of the pixels are restricted from being changed or disturbed. For example the active selected portion i.e white is valued as 1. An editor puts a mask layer so avoid disturbing that part of the composition. Some pictures already have a mask to edit the non-transparent layers. The masks come in several degrees-i.e they can be sharp and edgy, hard or soft transparent texture. This helps in editing the nearby areas that need to have a hard or soft touch. When photo masking is done, it is fairly simple to manipulate the picture and make it appear more attractive which the ultimate goal of any editor is. The masks of are of two types-pixel based or vector based. Every editor knows that the vector path is more advantageous to work with.
Now that it is clear how masking in image process gives excellent results, we deal with the techniques that actually uplift the digital capture. There is a choice of sharpening masks or alternatively applying the edge masks. Depending on the need an editor will deploy any one of them to work on the picture. The light and dark areas just like a painting often judge a pictorial quality. Hence, the areas that are masked in a picture that provides several shades of natural light and darkness is a challenge to edit. Here the edges will need different degrees of sharpness. The editor will have to be very selective in the technique used. He can opt for the contour sharpening method here. This will ensure that the transition will not alter the actual structure of the picture and the sharpness will not vary the areas that have been edited. If there are sharpness bumps then some areas of light and shade have not been worked upon very well. This poses a problem for pictures of trees and landscape when light and shade are unevenly dense in several parts. Such images have unique sharpening edit requirements.
As an advisory, the light the dark areas of such pictures (as mentioned above) should be sharpened separately. Otherwise it affects the other parts of the picture. This calls for the contour method in which two mask layers are made with the help of the blend mode.