Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Patent
1998-09-23
2000-08-15
Hindenburg, Max
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
600558, A61B 500
Patent
active
061028738
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a method and device for identification of stimuli. Such a method is described in NL-A-1002854, which was filed simultaneously with the present application.
SUMMARY OF THE INVENTION
In this method, the intention is to identify stimuli as well as stimuli positions and orientations. The error margin in this method is partly connected to the comparison algorithm applied for said identification, as well as to the determination of the instances of measurement.
A method of identifying objects comprising: measuring at least a first characteristic property in each of a first plurality of different views an object and obtaining a first set of signals representative thereof; storing the first set of signals as a reference; measuring the first characteristic property in each of a second plurality of views of the object as it is manipulated and obtaining a second set of signals representative thereof; measuring the time period during which each of a plurality of the second plurality of views is present; comparing the second set of signals to the first set of signals; and determining from the comparison which of the views of the first plurality of different views of the object occurred during the manipulation and the time period of occurrence of at least one of the views.
The object of the invention is to provide a different method by which the correct identification can be realized in nearly all cases. Such a method according to the invention is characterized in that one or more different methods of identification can be applied in combination. Methods each having their specific advantages and disadvantages, together yielding a smaller error margin than each on its own.
Further, the method according to the invention is characterized in that a flexible measuring frequency is employed, in which the instance of measuring can be made dependent of conditions. Further, the method according to the invention is characterized in that measuring sensors, being part of the device, not only record an image of a stimulus once every instance of measurement, but at the same record semi-continuous stimuli data, so as to immediately and/or afterwards select the data best suitable to be used for stimuli identification.
Furthermore, the method according to the invention is characterized in that contours of the stimuli to be identified are determined and are divided in segments which are applied for determining the positions, movements, rotations, orientations and/or distortions of the stimuli. Further, the method is characterized in that the possible identifications determined by the various algorithms together, including the most likely one, are additionally checked by way of a series of conditions relating to logical connections. The final identification concerns the stimulus having the highest position in a probability value order at the same time meeting at least one established part of the tested conditions.
The stimuli that can be determined practically error-free, concern printed matter, illustrations, photos, texts, instructions, manuals, etc., in printed media, including magazines, dailies, specialist journals, brochures, flyers, free local printed matter, DM-material, books, guides, etc. Yet also products, product components, product concepts, models, e.g. of cars, and designs, as well as packages and other three-dimensional objects.
The method according to the invention concerns a stimuli classification and read in method, which detects any variant of stimuli exposure beforehand and stores it in such a way, that comparison with a read-in stimulus enables an error-free recognition within a short time, e.g. within one second, as well as an error-free determination of position and orientation of the read-in stimulus. In this way, it is possible to detect e.g. manipulations of stimuli by respondents, such as with printed matter, the way of holding it and/or flipping the pages. Yet also the handling and manipulation of objects, e.g. turning objects for the purpose of observing
REFERENCES:
patent: 3388630 (1968-06-01), Leitner
patent: 4894777 (1990-01-01), Negishi
patent: 4992867 (1991-02-01), Weinblatt
Eyelight Research N.V.
Hindenburg Max
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