Image reading device, image reading program and image reading method

An image reading device, image reading technology, applied in image analysis, image data processing, image data processing, etc.

Inactive Publication Date: 2009-08-26
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the above-mentioned technologies of Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4, when the information of the entire fingerprint is obtained from the partial images of the collected fingerprints, it is necessary to make the partial images overlap with each other.

Method used

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  • Image reading device, image reading program and image reading method
  • Image reading device, image reading program and image reading method
  • Image reading device, image reading program and image reading method

Examples

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Embodiment approach 1

[0043] In this embodiment, a case where the image reading device of the present invention is applied to a fingerprint reading device will be described. The fingerprint reading device of this embodiment acquires a plurality of partial images (first images) of the fingerprint as the finger moves, and reconstructs and outputs an overall image of the fingerprint from the plurality of partial images. In addition, other biometric information such as palm prints, finger veins, and palm veins may be used as objects to be read.

[0044] First, the structure of the fingerprint reading device of this embodiment will be described.

[0045] figure 1 It is a block diagram showing an example of the structure of the fingerprint reading device of this embodiment. This fingerprint reading device includes a fingerprint sensor 1 (obtaining unit), predicting unit 2 (indicating unit), extrapolating unit 3, relative position detecting unit 4 (calculating unit), and reconstructing unit 5 (synthesiz...

Embodiment approach 2

[0127] In this embodiment, as in Embodiment 1, a case where the present invention is applied to a fingerprint reading device will be described. The fingerprint reading device of this embodiment acquires a plurality of partial images of the fingerprint as the finger moves, and outputs information about the partial images and relative positions.

[0128] Figure 19 It is a block diagram showing an example of the structure of the fingerprint reading device of this embodiment. In this figure, with figure 1 the same symbol as figure 1 The parts that are the same as or similar to the objects shown will be omitted here. This graph is related to figure 1 In contrast, instead of the reconstruction unit 5, an information generation unit 6 (output unit) is provided.

[0129] Figure 20 It is a flowchart showing an example of the operation of the fingerprint reading device of this embodiment. Processing S11~S17 and figure 2 same. Next, the information generation part 6 judges wh...

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Abstract

The invention provides an image reading device, an image reading program and an image reading method. The image reading device is provided with a fingerprint sensor (1), an externally-inserting part (3) and a relative position detection part (4), wherein the fingerprint sensor acquires a plurality of first images by sequentially reading the parts of relatively moving objects; the externally-inserting part (3) generates second images for widening the range of the first images by externally inserting the first images; and the relative position detection part (4) calculates the relative position among the first images or among the second images according to a plurality of images formed by at least any image in the first images and the second images.

Description

technical field [0001] The present invention relates to an image reading device, an image reading program, and an image reading method for sequentially reading a plurality of partial images from a relatively moving object. Background technique [0002] With the recent increase in functionality, small information devices such as mobile phones and PDAs (Personal Digital Assistants) can be connected to networks and store a large amount of personal information, and there is a high demand for improving the security performance of these devices. In such devices, in order to ensure security, personal authentication using passwords or ID (Identification) cards, etc., which have been widely used in the past, may be considered. However, there is a high risk of theft of passwords and ID cards, and therefore, it is strongly desired to realize more reliable personal authentication (authentication that the user of the device is the user himself / herself registered in advance). [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T1/00
CPCG06K9/00026G06V40/1335G06T7/00G06T1/00
Inventor 安孙子幸弘
Owner FUJITSU LTD
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