Image processing method and image processing system thereof

An image processing and image processor technology, applied in the field of image processing, can solve the problems of increasing the burden and difficulty of fingerprint identification

Pending Publication Date: 2021-05-11
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the sensed image signal may include various noises and offsets that limit the maximum magnification that can be performed on valid fingerprint signals, thereby increasing the burden and difficulty of fingerprint identification

Method used

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  • Image processing method and image processing system thereof
  • Image processing method and image processing system thereof
  • Image processing method and image processing system thereof

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Embodiment Construction

[0023] Please refer to figure 1 , figure 1 It is a schematic diagram of an image processing system 10 according to an embodiment of the present invention. Such as figure 1 As shown, the image processing system 10 includes an image sensor 100 , an image processor 102 and a host device 104 . In one embodiment, the image processing system 10 can be used to process fingerprint image signals for fingerprint recognition, therefore, the image sensor 100 can be a fingerprint sensor. In general, the image sensor 100 may include a plurality of sensing pixels arranged in an array. If the image sensor 100 is an optical fingerprint sensor, the image processing system 10 may further include a light source disposed under the sensing board. Each sensing pixel can sense the light intensity reflected by the touching finger to generate a fingerprint image signal, which is then sent to the image processor 102 and the host device 104 for fingerprint image recognition. The detailed structure o...

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Abstract

The invention discloses an image processing method and an image processing system thereof. The image processing method includes the steps of: receiving a plurality of original image signals from an image sensor; modifying the plurality of original image signals based on a lens pattern, to generate a plurality of first image signals; obtaining compensation information of the plurality of first image signals; determining whether the plurality of first image signals match with a predetermined image pattern; modifying the plurality of first image signals according to the compensation information to generate a plurality of second image signals when the plurality of first image signals are determined to not match with the predetermined image pattern; and determining whether the plurality of second image signals match with the predetermined image pattern.

Description

technical field [0001] The invention relates to an image processing method and system, in particular to an image processing method and system which can be used to process fingerprint images. Background technique [0002] Fingerprint sensing technology has been widely used in various electronic products, such as mobile phones, notebook computers, tablet computers, personal digital assistants (Personal Digital Assistant, PDA), and portable electronic devices, etc., to realize identity recognition. Through fingerprint sensing, the identity of the user can be easily identified. The user only needs to place his finger on the fingerprint sensor to log in to the electronic device without having to enter a lengthy and cumbersome user name and password. [0003] In recent years, optical fingerprint recognition has become one of the most popular fingerprint recognition solutions. In the optical fingerprint sensing system, the fingerprint image sensor can be arranged with a light sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06V40/13G06V10/30
CPCG06V40/1324G06V40/1365G06V40/13G06V10/993G06V10/30G06T5/001G06V40/1318G06V40/1347
Inventor 黄敏
Owner NOVATEK MICROELECTRONICS CORP
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