Methods and systems for character segmentation in automated license plate recognition applications

摘要

Methods and systems for character segmentation in an automatic license plate recognition application. One or more images of a license plate are acquired. Then, a pixel-level importance may be calculated with respect to the image(s) of the license plate based on information within the image, such as gradient information and raw grayscale information. A seam selection can be then applied with respect to the pixel-level importance map and the image(s) by enforcing constraints based on known characteristics of license plates in order to provide for character segmentation with respect to the image(s) of the license plate.

主权项

1. A method for character segmentation with respect to an image of a license plate, said method comprising:
acquiring at least one image of a license plate via an image-capturing unit; calculating a pixel-level importance map with respect to said at least one image of said license plate based on image attributes associated with said at least one image acquired via said image-capturing unit; and applying a seam selection with respect to said pixel-level importance map and said at least one image by enforcing at least one constraint based on known characteristics of license plates in order to provide for a character segmentation with respect to said at least one image of said license plate acquired by said image-capturing unit.