Abstract: System or components such as software for 3D modelling of bodies is described. This can be realized by a computer based method for modelling a body by scanning a determined space divided into elementary spaces, each elementary space being assigned a signed distance parameter indicative of the distance of said elementary space to said body and a weight parameter indicative of the importance of the distance parameter; said scanning of said body providing scanned points and each scanned point thus obtained possibly modifying said signed distance and weight parameters of each elementary space of said determined space; wherein, each one of selected elementary spaces is modified by subdividing said selected elementary space into higher level elementary spaces defined by the same parameters; wherein, in order to decrease details of the model of said body, said elementary spaces are modified by replacing selected elementary spaces with lower level elementary spaces.

Abstract: A method in which a digital picture of the tip of a dental scaler tool and other uniquely identifying characteristics is used to measure the extent of wear on the tool. Unique characteristics of the dental scaler tool, such as color and shape of the grip, narrow a set of reference images to a subset of likely matching tip reference images. A digital contour of the worn tip is isolated. Characteristics of the physical shape of each available tips have been stored in a digital library of reference images. The same tip shape characteristics are developed for the tip contour that were stored for each reference image. The digital profile of the worn tip and a matching, selected reference image of the tip from a library of digitally overlaid. An accurate measurement of the extent of wear of the insert tip is made and displayed.

Abstract: Systems and methods, devices and software are described for use in image comparison such as required for medical planning such as in dental implantology or other applications that require registration of digital images. A method and system is described for automatically finding correspondences between two or more digital representations such as images of one or more 3D objects with an identical, partially identical or similar geometry. The method and system, devices and software have the advantage that although the different digital representations of the object may be influenced by either noise, or scatter, or occlusion, or clutter, or any combination of these, correspondence can be found.

Abstract: A method in which a digital picture of the tip of a dental scaler tool and other uniquely identifying characteristics is used to measure the extent of wear on the tool. Unique characteristics of the dental scaler tool, such as color and shape of the grip, narrow a set of reference images to a subset of likely matching tip reference images. A digital contour of the worn tip is isolated. Characteristics of the physical shape of each available tips have been stored in a digital library of reference images. The same tip shape characteristics are developed for the tip contour that were stored for each reference image. The digital profile of the worn tip and a matching, selected reference image of the tip from a library of digitally overlaid. An accurate measurement of the extent of wear of the insert tip is made and displayed.

Abstract: System or components such as software for 3D modelling of bodies is described. This can be realized by a computer based method for modelling a body by scanning a determined space divided into elementary spaces, each elementary space being assigned a signed distance parameter indicative of the distance of said elementary space to said body and a weight parameter indicative of the importance of the distance parameter; said scanning of said body providing scanned points and each scanned point thus obtained possibly modifying said signed distance and weight parameters of each elementary space of said determined space; wherein, each one of selected elementary spaces is modified by subdividing said selected elementary space into higher level elementary spaces defined by the same parameters; wherein, in order to decrease details of the model of said body, said elementary spaces are modified by replacing selected elementary spaces with lower level elementary spaces.

Abstract: Systems and methods, devices and software are described for use in image comparison such as required for medical planning such as in dental implantology or other applications that require registration of digital images. A method and system is described for automatically finding correspondences between two or more digital representations such as images of one or more 3D objects with an identical, partially identical or similar geometry. The method and system, devices and software have the advantage that although the different digital representations of the object may be influenced by either noise, or scatter, or occlusion, or clutter, or any combination of these, correspondence can be found.