Computation of Gabor Filter Function

Implementation of Gabor filter computation modules. Gabor1.m: Visualizes 4-direction Gabor filter templates through image display. Gabor2.m: Top-level module implementing Gabor filtering on Lena image using 4 directional filters. gabor.m: Plots spatial and frequency domain representations of a single Gabor filter. compute.m: Core Gabor filter computation function (called independently by the above 3 modules which operate separately).