METHODS AND APPARATUS TO IMPROVE DETECTION AND FALSE ALARM RATE OVER IMAGE SEGMENTATION

摘要

Methods, apparatus, systems and articles of manufacture are disclosed herein. An example method to improve object detection and false alarm rate over image segmentation includes overlaying a first object of a first image onto a second image. A first score based on a first chamfer distance between first edges of the first object and second edges in the second image is determined. A second score corresponding to a second chamfer distance between the second edges and a mathematical representation of a plurality of shapes is determined, the second score representing a similarity between the second edges and the plurality of shapes observed simultaneously. A normalized score is determined by normalizing the first score based on the second score. A presence of the second object in the second image matching the first object is detected based on whether the normalized score satisfies a threshold score.

主权项

1. A method to detect an object in an image comprising:
retrieving a first image and a second image; determining a first score based on a first chamfer distance between first edges of a first object in the first image and second edges in the second image; determining a second score corresponding to a second chamfer distance between the second edges and a mathematical representation of a plurality of shapes, the second score representing a similarity between the second edges and the plurality of shapes observed simultaneously; determining a normalized score by normalizing the first score based on the second score; and detecting a presence of a second object in the second image matching the first object when the normalized score satisfies a threshold score.