Three-dimensional object recognition
ACM Computing Surveys (CSUR) - Annals of discrete mathematics, 24
A massively parallel architecture for a self-organizing neural pattern recognition machine
Computer Vision, Graphics, and Image Processing
Neural dynamics of surface perception: boundary webs, illuminants, and shape-from-shading
Computer Vision, Graphics, and Image Processing
Segmentation and Classification of Range Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Segmentation through Variable-Order Surface Fitting
IEEE Transactions on Pattern Analysis and Machine Intelligence
Adaptive 3-D Object Recognition from Multiple Views
IEEE Transactions on Pattern Analysis and Machine Intelligence - Special issue on interpretation of 3-D scenes—part II
A Method for Registration of 3-D Shapes
IEEE Transactions on Pattern Analysis and Machine Intelligence - Special issue on interpretation of 3-D scenes—part II
Intelligent behaviour in animals and robots
Intelligent behaviour in animals and robots
Network model for invariant object recognition
Pattern Recognition Letters
Localized versus distributed representations
The handbook of brain theory and neural networks
Perception of three-dimensional structure
The handbook of brain theory and neural networks
Vision: A Computational Investigation into the Human Representation and Processing of Visual Information
Stereoscopic neuro-vision for three-dimensional object recognition
Mathematical and Computer Modelling: An International Journal
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The manufacturing of metal castings produces objects with extraneous features due to the nature of the process. These features, called runners and risers, are removed by a hazardous manual process known as fettling. They differ in form, size and presence from casting to casting. Unfettled castings tend to be geometrically imprecise and often composed of surfaces of a free-form nature. This makes the automation of the process of fettling difficult as a fixed datum cannot be easily defined. Previous methods to automate the process have centred on directing a robotic tool through a predefined path, irrespective of the nature, or even absence, of any rogue features. We present here a new connectionist model, IvOR (Invariant Object Recogniser), for the adaptive recognition and assessment of free-form 3-D objects. It has been derived as the front-end to an intelligent automated fettling system. IvOR has two distinct phases for learning and recognition. For both phases the initial stages are the same, a surface type map (termed an HK map) is created from the local mean (H) and Gaussian (K) curvatures within the range data representation of an object. The HK map is then passed through a focusing pre-processor to remove positional and scale variance within the input image. In the learning stage the "focused" image is learnt by an ART2a Network. In the recognition stage rotational variance (relative to the master representation) is removed by a rotational match network based on the principles of Adaptive Resonance Theory (ART). Assessment for rogue features is done by anovel local matching method based on the local comparison of network weights. IvOR allows adaptation of object representations and learning of new objects, online, with recognition and assessment at speeds acceptable for a manufacturing process.