Abstract
Three novel invariant moments for color object recognition based on Radon transform and hypercomplex polar harmonic transform (PHT) are proposed. Quaternion Radon transform is analyzed, and quaternion Fourier slice theorem is introduced. Better compact representation of the image with good numerical stability than that of radon-based complex PHT is accomplished. The proposed technique can handle the color image in both inter-channel and intra- channel in a comprehensive manner. Two experiments are conducted for root-mean-square error (RMSE) and correct classification percentage (CCP) with different rotations and varying Gaussian noise. It is concluded that the proposed technique performs reasonably good for color object recognition in terms of RMSE and CCP. The reliable image description is achieved with the proposed technique.