T.Tamilarasi , P.Brinda
Color enhancement of hyperspectral or multispectral images is too important to visualize the spectral features. Many color enhancement techniques are available to enhance the feature of a spectral band without changing the average color distribution. Sometimes the enhanced spectrum lies outside the visible spectrum range, the enhanced features are also invisible. In order to overcome this problem, a novel image enhancement method, known as Advanced Histogram Equalization (AHE) is proposed in this paper for more effective visualization of the spectral features both in visible range and non-visible range. This paper also specifies both the color for visualization and the spectral band for extracting the spectral feature, so that the spectral feature is enhanced with arbitrary color. This proposed color enhancement method is applied to different type of hyperspectral images where its effectiveness to visualize spectral features is verified.
Hyperspectral Image, Color Enhancement, Multispectral Image.