Method and System For Local Adaptive Detection Of Microaneurysms In Digital Fundus Images
    1.
    发明申请
    Method and System For Local Adaptive Detection Of Microaneurysms In Digital Fundus Images 有权
    用于局部自适应检测数字眼底图像中的微动脉瘤的方法和系统

    公开(公告)号:US20070002275A1

    公开(公告)日:2007-01-04

    申请号:US11425167

    申请日:2006-06-20

    IPC分类号: A61B3/00

    摘要: A local adaptive method is proposed for automatic detection of microaneurysms in a digital ocular fundus image. Multiple subregions of the image are automatically analyzed and adapted to local intensity variation and properties. A priori region and location information about structural features such as vessels, optic disk and hard exudates are incorporated to further improve the detection accuracy. The method effectively improves the specificity of microaneurysms detection, without sacrificing sensitivity. The method may be used in automatic level-one grading of diabetic retinopathy screening.

    摘要翻译: 提出了一种局部自适应方法,用于数字眼底图像中的微动脉瘤的自动检测。 图像的多个子区域被自动分析并适应于局部强度变化和性质。 包括关于结构特征如血管,视盘和硬质渗出物的先验区域和位置信息,以进一步提高检测精度。 该方法有效地提高了微动脉瘤检测的特异性,而不牺牲敏感性。 该方法可用于糖尿病视网膜病变筛查的自动一级分级。

    Hybrid digital watermarking for video authentication
    2.
    发明授权
    Hybrid digital watermarking for video authentication 失效
    用于视频认证的混合数字水印

    公开(公告)号:US07409556B2

    公开(公告)日:2008-08-05

    申请号:US10717069

    申请日:2003-11-19

    IPC分类号: H04L9/00

    摘要: A hybrid digital watermarking system for video authentication includes an authenticated acquisition subsystem for digitally watermarking video data and a video management subsystem in signal communication with the authenticated acquisition subsystem for verifying the digitally watermarked video data, where the authenticated acquisition subsystem may include a watermarking device for applying each of an identity signature and a control signature to the video data within a hybrid digital watermark, and the hybrid digital watermark may achieve progressively varying robustness by means of error-correcting signature coding and/or rate-distortion guided bit embedding.

    摘要翻译: 用于视频认证的混合数字水印系统包括用于数字水印视频数据的认证采集子系统和与认证采集子系统进行信号通信的视频管理子系统,用于验证数字水印视频数据,其中认证采集子系统可以包括用于 将混合数字水印中的视频数据应用每个身份签名和控制签名,并且混合数字水印可以通过纠错签名编码和/或速率失真引导比特嵌入来实现逐渐变化的鲁棒性。