Patent ID: 10963721

Abstract:
An electronic device for license plate recognition includes control circuitry and a memory that stores a sequence of image frames. The control circuitry extracts a first set of license plate images from the sequence of image frames and estimates a set of two dimensional (2D) connectionist-temporal-classification (CTC) matrices based on application of a pre-trained CTC-based deep neural network (DNN) on the first set of license plate images. The control circuitry further generates a three dimensional (3D) CTC matrix from the estimated set of 2D CTC matrices and decodes a set of alphanumeric characters of a license plate number of a first license plate. The set of alphanumeric characters are decoded based on a 3D beam search through the generated 3D CTC matrix. The decoded set of alphanumeric characters correspond to maximum likelihood values for the decoded set of alphanumeric characters in the 3D beam search.