公开(公告)号：US09111125B2

公开(公告)日：2015-08-18

申请号：US13763594

申请日：2013-02-08

Applicant: Apple Inc.

Inventor： Wayne C. Westerman ,  Karen L. Jenkins

IPC: G06K9/46 ,  G06K9/00 ,  G06K9/03

CPC classification number: G06K9/00013 ,  G06K9/00006 ,  G06K9/0008 ,  G06K9/036

Abstract: A fingerprint processing system comprises a fingerprint sensor configured to generate an image of a fingerprint, and a processor configured to process the fingerprint image. The processor is operable to generate a ridge flow map comprising ridge flow vectors characterizing the fingerprint, and a multi-layer decomposition based on the ridge flow vectors. The decomposition includes at least first and second-order residuals, based on the ridge flow vectors, and the processor is operable to characterize a quality of the fingerprint image, based on the residuals.

Abstract translation: 指纹处理系统包括被配置为生成指纹图像的指纹传感器和被配置为处理指纹图像的处理器。 处理器可操作以产生包括表征指纹的脊流向量的脊流图，以及基于脊流矢量的多层分解。 基于脊流向量，分解至少包括第一和第二残差，并且处理器可操作以基于残差来表征指纹图像的质量。

公开(公告)号：US20140226879A1

公开(公告)日：2014-08-14

申请号：US13763594

申请日：2013-02-08

Applicant: APPLE INC.

Inventor： Wayne C. Westerman ,  Karen L. Jenkins

IPC: G06K9/00

CPC classification number: G06K9/00013 ,  G06K9/00006 ,  G06K9/0008 ,  G06K9/036

Abstract: A fingerprint processing system comprises a fingerprint sensor configured to generate an image of a fingerprint, and a processor configured to process the fingerprint image. The processor is operable to generate a ridge flow map comprising ridge flow vectors characterizing the fingerprint, and a multi-layer decomposition based on the ridge flow vectors. The decomposition includes at least first and second-order residuals, based on the ridge flow vectors, and the processor is operable to characterize a quality of the fingerprint image, based on the residuals.

Abstract translation: 指纹处理系统包括被配置为生成指纹图像的指纹传感器和被配置为处理指纹图像的处理器。 处理器可操作以产生包括表征指纹的脊流向量的脊流图，以及基于脊流矢量的多层分解。 基于脊流向量，分解至少包括第一和第二残差，并且处理器可操作以基于残差来表征指纹图像的质量。