Variable pixel binning in an optical biometric imaging device

A technology of biometrics and imaging devices, which is applied in the recognition of patterns in signals, image communication, and printing image acquisition, etc., can solve the problems of reduced biometric performance and reduced image resolution, etc.
CN113261008APending Publication Date: 2021-08-13FINGERPRINT CARDS ANACATUM IP AB
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
FINGERPRINT CARDS ANACATUM IP AB
Publication Date
2021-08-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention relates to a method of configuring an optical biometric imaging device comprising a photo-detector pixel array, the method comprising: acquiring a biometric image of a biometric object using a first binning setting for binning of detection signals from sub-arrays of the photo-detector pixels into a single pixel value;determining a measure indicative of the feature resolution of the biometric image; and determining, when the measure indicates that the feature resolution is below a feature resolution threshold, a second binning setting adapted to provide a higher feature resolution compared to the feature resolution of the biometric image.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a method of configuring an optical biometric imaging device comprising an array of photodetector pixels, an optical biometric imaging device and a computer program product. Background technique

[0002] Biometric systems are widely used as a means for increasing the convenience and security of personal electronic devices such as mobile phones. In particular, fingerprint sensing systems are now included in the majority of all newly released consumer electronic devices such as mobile phones.

[0003] Optical fingerprint sensors have been known for some time and may be a viable alternative to, for example, capacitive fingerprint sensors in certain applications. Optical fingerprint sensors may, for example, be based on the principle of pinhole imaging and / or may employ micro-channels (ie collimators or micro-lenses) to focus incident light onto the image sensor.

[0004] In an optical fingerprint sensor, the image under t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More