A New Technique for Enhancement of Color Images by Scaling the Discrete Cosine Transform Coefficients
|Name||A New Technique for Enhancement of Color Images by Scaling the Discrete Cosine Transform Coefficients|
The reason for us to opt for this paper is to enhance the vision clarity, to enrich its perceptive view. Direct observation and recorded color images of the same scenes are often strikingly different because human visual perception computes the conscious representation with vivid color and detail in shadows, and with resistance to spectral shifts in the scene illuminant. This paper presents a new technique for color enhancement in the compressed domain. The proposed technique is simple but more effective than some of the existing techniques reported earlier. The novelty lies in this case in its treatment of the chromatic components, while previous techniques treated only the luminance component. This is simplified with the usage luminance component because it adjusts the brightness alone. Thus results of all previous techniques along with that of the proposed one are compared with respect to those obtained by applying a spatial domain color enhancement technique that appears to provide very good enhancement. The proposed technique, computationally more efficient than the spatial domain based method, is found to provide better enhancement compared to other compressed domain based approaches.
|ieee paper year||2011|