Abstract: A system for generating an image document. The system comprises means for receiving image edit sequence information from an image editor indicative of a sequence of changes made to an image using the image editor. Means generate an image edit tree using the recorded image edit sequence information, and using information in the image edit tree, and object edit tree containing information relating to objects found in the image is generated. An image document is created comprising the image, the image edit tree and the image object tree.

Abstract: In a data processing method and apparatus, an image signal representative of features in a space of two or more dimensions is progressively filtered at monotonically increasing filtering scales, the signal being input to the first filtering scale, and the input to the or each subsequent filtering scale is the output signal from the previous scale. Each input has a number of data samples each of which represents a respective region of the space, and at each filtering scale those samples are sorted into connected-sets, each of which contains a plurality of substantially equal value to data samples or a respective individual data sample not in other sets. The process then selects those connected-sets which contain data samples having values which are local maxima or local minima and which represent a composite region of a size related in a predetermined way to the current filtering scale.

Abstract: An image and pulse analysis system and method including a datasieve comprising a succession of ordinal filtering means receiving at least a selected part of a signal conglomerate and filtering the at least a selected part of the signal conglomerate to produce a bandpass filter output, the ordinal filtering means having window lengths increasing from N (less than M) up to M, whereby an input signal to each successive filtering means is formed from the output of the previous filtering means; selection means for selecting a predetermined subset of bandpass filter outputs from outputs of the succession of filtering means; and arithmetic means for adding together the signals of the subset to produce an output signal containing only wanted signals determined by the selection means; data storage means for storing data relating to a sought-for-feature or object which may exist in a field from which data is derived for presenting to the datasieve; comparison means for matching or comparing the stored data with the out

Abstract: A method of filtering a signal conglomerate using a datasieve having a plurality of filtering stages in cascade, at least one of the filtering stages comprising a recursive ordinal value filter. A typical arrangement comprises a sequence of recursive median filters of increasing scale (window size), providing low pass outputs from differing stages to enable a bandpass output to be formed by taking the difference between the low pass outputs.

Abstract: A pulse analysing system for separating broadband wanted pulses of duration to include a predetermined plurality of data samples from a signal which also contains unwanted short signals, in which a data-sieve comprising a succession of ordinal signals of increasing value is employed in conjunction with pulse selection and addition of signals of a selected subset obtained from the data-sieve.