Image feature extraction in insect kinetic deformation measurement

An image processing method for extracting sub-pixel of wing veins and vein junctions of insect images is proposed. The image of wing veins is denoised by wavelet, and then enhanced by wavelet homomorphic filter and bilinear generalized fuzzy. The center positions of wing veins are extracted by the sub-pixel extracting algorithm based on Hession matrix, and vein junctions are determined by the neighboring angle constraint and continuity of vein direction. The experiment results show that compared with other methods, the proposed approach can extract wing veins and vein junctions successfully, and can suppress the noise and disturbance effectively.