Abstract: A method and an image processing system for detecting an object in an image are described. A set of line segments are detected in the image. A subset of the line segments is identified based on a projection space orientation that defines a projection space. Each one of the line segments of the subset of line segments is projected into the projection space to obtain a set of projected line segments, where each projected line segment of the set of projected line segments is represented by a respective set of projection parameters. A determination is performed, in the projection space, based on the sets of projection parameters and a shape criterion that characterizes the object, of whether the image includes an instance of the object. In response to determining that the image includes the instance of the object, the instance of the object is output.

Abstract: The present disclosure relates to methods and systems for identifying a categorization of a vehicle depicted in an input image. Using a neural network, a feature vector of a vehicle is generated based on an input image. An orientation of the vehicle is determined based on the input image. A set of reference vectors is selected from a library of reference vectors based on the orientation of the vehicle. At least one close match reference vector is identified by comparing the feature vector of the vehicle to a plurality of reference vectors, including at least said set of selected reference vectors. An indication of the categorization of the vehicle is output based on the at least one close match reference vector.

Abstract: A method and an image processing system for detecting an object in an image are described. A set of line segments are detected in the image. A subset of the line segments is identified based on a projection space orientation that defines a projection space. Each one of the line segments of the subset of line segments is projected into the projection space to obtain a set of projected line segments, where each projected line segment of the set of projected line segments is represented by a respective set of projection parameters. A determination is performed, in the projection space, based on the sets of projection parameters and a shape criterion that characterizes the object, of whether the image includes an instance of the object. In response to determining that the image includes the instance of the object, the instance of the object is output.