A review: Image compensation techniques

Image clarity is very easily affected by lighting, weather, or equipment that has been used to capture the image. Some of these conditions lead to over-exposure of under-exposure condition where an image may suffer from loss of information. As a result, many researchers have developed several techniques known as image compensation techniques to bring back the information in an image. This paper presents a review on some of the image compensation techniques that have been proposed by the past researchers including Manual Tuning, Contrast Stretching, Non-Linear Point Transform, Histogram Equalization, Homomorphic Filtering, and Retinex.