The Image Enhancement Work of Liquid Crystals of Different Side Chain and Terminal Groups

In the present manuscript the Polarizing optical Microscope technique is employed to record optical textures and transition temperatures of the liquid crystalline samples 1.P-Cyanobenzylidene P- Nonyloxyaniline 2.P Decyloxybenzylidene P- Toluidine. Both the sample shows the Nematic threaded marble textures, But in Smectic phases the first Sample exhibit sanded texture of Smectic- A and that of other sample shows Focal conic fan textures. The transition temperatures are also measured using Differential Scanning Calorimetry (DSC) for confirmation. To enhance the quality of textural images histogram equalization technique is employed. This method preserves the input brightness and output image with a significant contrast enhancement.