Edge detection with liquid crystal polarizing filter

The liquid crystalline filter exhibiting particular optical properties is presented. Their basis application is the multiresolution image analyzer based on a wavelet transform (WT). In co-operation with the phase shifter such, a filter allows to rotate the polarization of the transmitted light. The resulted intensity distribution has been exploited as a tool to span the transmitted image onto the space of the circular Haar wavelets. It provides new possibilities in an optical signal processing. The analysis of the light transmission in considered filter as well as the wavelet space creation are also described.