Effect of Contrast and Brightness on Digital Images under Outdoor Conditions

In the present scenario, the digital image processing has enveloped the whole world of advancing technology. The changes on-going in the world are directly or indirectly related to the processing of digital images. In this paper, we studied the impact of changing contrast and brightness on the digital images under outdoor conditions and checked out how the position of Sun effects contrast and intensity of the particular image and at what values of contrast and intensity, the pictures were more refined. A total of 52 images shot in North, South, East and West were taken for the experiment after regular intervals. Genetic algorithm was used by several authors to enhance the quality of images in terms of brightness and contrast. Here we investigated whether the brightness and contrast are direction and time orientated. The analysis shows that for the set of images taken, contrast is slightly affected by the whereas the effect of brightness is more pronounced with respect to time and direction.