British Telecommunications Public Limited Company

Robert Claxton

Simon Giles Thompson

Michael Free

Joanne Walker

A computer implemented method for determining a physical size of a feature represented in an image is provided together with computer systems and programs for carrying out the method. The method receives initial data comprising an indication of a respective physical size of one or more known types of object. The method uses the initial data to generate reference data from a first reference image. The generated reference data comprises an indication of a respective inferred physical size of one or more reference types of object. The method uses the generated reference data to determine the physical size of the feature based, at least in part, on: a size of a representation of one of the reference types of object in the image; the inferred physical size of that reference type of object; and a size of the representation of the feature in the image.

Image feature measurement

There is provided a mechanism that allows automated calls made from a set of one or more numbers to be detected and routed in an appropriate manner. The calls are classified based, at least in part, on one or more features of a call frequency time series that is generated from data representing a plurality of calls previously made from a set of one or more numbers by determining a respective number of calls made by the set of numbers during each of a plurality of time intervals. The classification indicates whether the calls include automated calls. Further calls from the set of numbers are routed in accordance with the classification.

Call routing in a communications network

Computer-implemented methods of placing and processing calls in a communications network are provided. The computer-implemented method of processing calls in a telephone network comprises: identifying a plurality of calls that have been made by a particular telephone number to telephone numbers in the telephone network; determining whether a sequence in which the calls were placed corresponds to a correct order for calling those telephone numbers, the correct order being determined based on a predetermined order for calling telephone numbers in the telephone network; and determining that one or more of the calls were made by spoofing the particular telephone number if the sequence in which the calls were placed does not correspond to a correct order.

Spoof call detection in telephone network

A method of classifying unwanted robot calls on the basis of the duration of a plurality of calls made from a single telephone number. If analysis of the distribution of call duration indicates that the calls are robot calls then the single telephone number is flagged such that subsequent calls from that number are not connected to the called party.

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London, United Kingdom

Robert Claxton