Preprocessing techniques of facial image with Median and Gabor filters

Image Preprocessing is an essential factor for any Face image, when processing it for research purpose, The need for Preprocessing is due to its variation in Lightening condition, differences in Pose, Head orientation and Expressions because the quality of an Image depend on the effectiveness of capture device like CCTV, Webcams etc. The common Preprocessing involves Color Normalization, Noise Reduction, Edge Detection and Histogram Equalization. The aim of Preprocessing is to improve the quality of the Image and to enhance the Image features for further processing. In this paper Median filter is used for Color Normalization and Noise Reduction. Gabor filter is used for Edge enhancement and Histogram Equalization for Image contrast illumination. Hence an improved quality of Image is produced by using Hybrid filters this helps for the efficiency of producing result for any research processing.