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Image processing method

An image processing and initial image technology, applied in the field of image processing, can solve the problems of information loss, difficult to reflect the details and texture of objects, and achieve the effect of improving contrast.

Inactive Publication Date: 2019-09-24
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When obtaining the original 16-bit (16-bit) image of the grayscale image, it may be subject to the interference of external factors or the limitation of the hardware device. , or Window-leveling algorithm for data conversion of the original image, the resulting image is difficult to reflect the detailed texture of the object
For example: when the optical fingerprint image sensor is used to collect fingerprint images, the 16-bit image obtained under the condition of strong external light interference, the image converted by the traditional direct conversion algorithm cannot well reflect the fingerprint lines, and even get information. missing fingerprint image

Method used

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Embodiment Construction

[0024] An embodiment of the present invention provides an image processing method to improve the integrity and contrast of fingerprint image information.

[0025] In order to make the above objects, features and beneficial effects of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The invention has been described by some specific examples, however the invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention.

[0026] combined reference figure 1 and figure 2 , figure 1 is a flowchart of an image processing method according to an embodiment of the present invention, figure 2 It is a schematic diagram of translating a block in an image processing method according to an embodiment of the present invention, and the image processing method ...

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Abstract

An image processing method includes the steps: acquiring an initial image including a plurality of pixels; selecting a block on the initial image, and calculating pixel values of a plurality of pixels contained in the block; and translating the block, calculating the pixel values of a plurality of pixels contained in the translated block, and repeating the step until the pixel values of all pixels in the initial image are calculated. According to the image processing method provided by the embodiment of the invention, the information of the original image can be more completely reserved, and the contrast ratio of the specific line information of the original image is improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a fingerprint image processing method. Background technique [0002] Today, grayscale images have been used in medical imaging, biometrics and other related fields. When obtaining the original 16-bit (16-bit) image of the grayscale image, it may be subject to the interference of external factors or the limitation of the hardware device. , or Window-leveling algorithm for data conversion of the original image, the resulting image is difficult to well reflect the details of the texture of the object. For example: when the optical fingerprint image sensor is used to collect fingerprint images, the 16-bit image obtained under strong external light interference, the image converted by the traditional direct conversion algorithm cannot well reflect the fingerprint lines, and even get information. The missing fingerprint image. [0003] Therefore, in order to ensure the inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/30004G06T2207/30196G06T5/92
Inventor 余万金朱虹
Owner SHANGHAI OXI TECH