公开(公告)号：JP4485585B2

公开(公告)日：2010-06-23

申请号：JP2008208687

申请日：2008-08-13

Applicant: ディジマーク コーポレイション

Inventor： ジェイ ニッツバーグ マーク ,  ディー ポーウェル ロバート

IPC: H04N1/387 ,  G06T1/00 ,  G06T7/00 ,  G06T9/00 ,  G07D7/00 ,  G07D7/12 ,  G07D7/20 ,  G07F7/12 ,  G09C5/00 ,  H04N1/32 ,  H04N1/40 ,  H04N7/08 ,  H04N7/081 ,  H04N7/26

CPC classification number: G06T1/0064 ,  G06Q20/341 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G07D7/0047 ,  G07D7/0056 ,  G07D7/12 ,  G07D7/20 ,  G07D7/2008 ,  G07D7/2033 ,  G07F7/08 ,  G07F7/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32245 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/3232 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.

公开(公告)号：JP4444317B2

公开(公告)日：2010-03-31

申请号：JP2007208188

申请日：2007-08-09

Applicant: ディジマーク コーポレイション

Inventor： ジェイ ニッツバーグ マーク ,  ディー ポーウェル ロバート

IPC: H04N1/387 ,  G06T1/00 ,  G06T7/00 ,  G06T9/00 ,  G07D7/00 ,  G07D7/12 ,  G07D7/20 ,  G07F7/12 ,  G09C5/00 ,  H04N1/32 ,  H04N1/40 ,  H04N7/08 ,  H04N7/081 ,  H04N7/26

CPC classification number: G06T1/0064 ,  G06Q20/341 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G07D7/0047 ,  G07D7/0056 ,  G07D7/12 ,  G07D7/20 ,  G07D7/2008 ,  G07D7/2033 ,  G07F7/08 ,  G07F7/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32245 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/3232 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.

公开(公告)号：JP3837432B2

公开(公告)日：2006-10-25

申请号：JP2005136454

申请日：2005-05-09

Applicant: ディジマーク コーポレイション

Inventor： ジェイ ニッツバーグ マーク ,  ディー ポーウェル ロバート

IPC: H04N1/387 ,  G06T1/00 ,  G06T7/00 ,  G06T9/00 ,  G07D7/00 ,  G07D7/12 ,  G07D7/20 ,  G07F7/12 ,  G09C5/00 ,  H04N1/32 ,  H04N1/40 ,  H04N7/08 ,  H04N7/081 ,  H04N7/26

CPC classification number: G06T1/0064 ,  G06Q20/341 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G07D7/0047 ,  G07D7/0056 ,  G07D7/12 ,  G07D7/20 ,  G07D7/2008 ,  G07D7/2033 ,  G07F7/08 ,  G07F7/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32245 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/3232 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.

公开(公告)号：JP4009655B2

公开(公告)日：2007-11-21

申请号：JP2006177158

申请日：2006-06-27

Applicant: ディジマーク コーポレイション

Inventor： ジェイ ニッツバーグ マーク ,  ディー ポーウェル ロバート

IPC: H04N1/387 ,  G06T1/00 ,  G06T7/00 ,  G06T9/00 ,  G07D7/00 ,  G07D7/12 ,  G07D7/20 ,  G07F7/12 ,  G09C5/00 ,  H04N1/32 ,  H04N1/40 ,  H04N7/08 ,  H04N7/081 ,  H04N7/26

CPC classification number: G06T1/0064 ,  G06Q20/341 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G07D7/0047 ,  G07D7/0056 ,  G07D7/12 ,  G07D7/20 ,  G07D7/2008 ,  G07D7/2033 ,  G07F7/08 ,  G07F7/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32245 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/3232 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.

公开(公告)号：JP4004528B2

公开(公告)日：2007-11-07

申请号：JP2006177155

申请日：2006-06-27

Applicant: ディジマーク コーポレイション

Inventor： ジェイ ニッツバーグ マーク ,  ディー ポーウェル ロバート

IPC: H04N1/387 ,  G06T1/00 ,  G06T7/00 ,  G06T9/00 ,  G07D7/00 ,  G07D7/12 ,  G07D7/20 ,  G07F7/12 ,  G09C5/00 ,  H04N1/32 ,  H04N1/40 ,  H04N7/08 ,  H04N7/081 ,  H04N7/26

CPC classification number: G06T1/0064 ,  G06Q20/341 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G07D7/0047 ,  G07D7/0056 ,  G07D7/12 ,  G07D7/20 ,  G07D7/2008 ,  G07D7/2033 ,  G07F7/08 ,  G07F7/12 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32245 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/3232 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.