Quantitative Assessment of Contrast of the Image Elements
One of the main tasks of image preprocessing is to improve the quality of images.
The image quality is characterized by several characteristics. One of the main objective characteristics among them is the image contrast. The image contrast is considered as a dimensionless value that characterizes (quantitatively or qualitatively) a significant or noticeable difference between characteristics of different areas of the image.
The total image contrast is determined generally considering the contrast of particular combinations of elements of the image (objects and background).