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Feature calculation device, feature calculation method, and computer program product

A feature calculation and calculator technology, applied in the direction of calculation, computer components, user/computer interaction input/output, etc., can solve the problem of increasing data volume, high dimensionality of feature quantities, and inability to directly express the characteristics of point sequence groups, etc. question

Inactive Publication Date: 2014-07-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the conventional technique described above, the dimensionality of the feature quantity is high, and the amount of data increases
[0006] In addition, in the conventional techniques described above, it is not possible to directly express the characteristics of a point sequence group which is a collection of point sequences

Method used

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  • Feature calculation device, feature calculation method, and computer program product
  • Feature calculation device, feature calculation method, and computer program product
  • Feature calculation device, feature calculation method, and computer program product

Examples

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no. 1 example

[0027] figure 1 is a configuration diagram illustrating an example of the feature calculation device 10 according to the first embodiment. Such as figure 1 As shown, the feature calculation device 10 includes an input unit 11 , an acquisition unit 12 , a first calculation unit 13 , a second calculation unit 15 , and an output unit 17 .

[0028] The input unit 11 may be realized using an input device such as a touch-sensitive pad, a touch pad, a mouse, or an electronic pen capable of handwriting input. The acquisition unit 12, the first computing unit 13, the second computing unit 15, and the output unit 17 can be realized by executing a computer program in a processor such as a central processing unit (CPU), that is, can be realized using software; or can be realized using hardware such as an integrated circuit (IC); or can be implemented using a combination of software and hardware.

[0029] The input unit 11 is used to input a point sequence group (ie, a plurality of poin...

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Abstract

According to an embodiment, a feature calculation device includes an obtaining unit, a first calculator, and a second calculator. The obtaining unit is configured to obtain a point sequence group comprising a set of point sequences in which a sequence of a plurality of points is fixed. The first calculator is configured to, for each of the point sequences in the point sequence group, calculate a plurality of values related to a curvature of a shape of the point sequence, with a reference point of the point sequence as a reference, and calculate feature quantities based on the plurality of calculated values. The second calculator is configured to calculate a histogram representing a distribution of the feature quantities of each of the point sequences.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from Japanese Patent Application No. 2012-286047 filed on December 27, 2012; the entire contents of which are hereby incorporated by reference. technical field [0003] Embodiments described herein relate generally to feature computation apparatus and feature computation methods. Background technique [0004] A technique in which the shape of a single stroke of a character or figure handwritten by a user is characterized by the curvature of the shape is known. [0005] In the above-mentioned conventional technology, at each point constituting the point sequence, the expected value of the curvature of the shape identified by the point sequence is calculated with this point as a reference; and the feature quantity representing the dimension of the points constituting the point sequence is extracted, In order to characterize the shape recognized by the point...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/68
CPCG06F3/04883G06F3/03G06F3/0416G06F3/04166
Inventor 内山英昭柴田智行
Owner KK TOSHIBA
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