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公开(公告)号:US20160344890A1
公开(公告)日:2016-11-24
申请号:US15114392
申请日:2014-01-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Robert Ulichney , Matthew D Gaubatz , Stephen Pollard
IPC: H04N1/32 , G06T1/00 , H04N19/467 , H04N1/405 , H04N1/44
CPC classification number: H04N1/32325 , G06T1/005 , G06T1/0057 , G06T2201/0051 , G06T2201/0083 , H04N1/32219 , H04N1/32256 , H04N1/32267 , H04N1/32277 , H04N1/32293 , H04N1/3232 , H04N1/4055 , H04N1/4486 , H04N5/913 , H04N19/467 , H04N2005/91335 , H04N2201/3281 , H04N2201/3283 , H04N2201/3284
Abstract: A data-bearing image (391) is created from a carrier image (371). The carrier image (371) is scaled to produce a scaled image. A clustered-dot halftone screen is applied to the scaled image to produce a halftone image. A resulting number of cells in the halftone image conforms to a cell count (372) that includes a horizontal cell value and a vertical cell value. Payload data is encoded into the halftone image to produce a data-bearing halftone image, including shifting pixel clusters within cells of the halftone image that include pixel clusters.
Abstract translation: 从载体图像(371)创建数据承载图像(391)。 载波图像(371)被缩放以产生缩放图像。 将聚焦点半色调屏幕应用于缩放的图像以产生半色调图像。 半色调图像中的结果数量的单元符合包括水平单元格值和垂直单元格值的单元格计数(372)。 有效载荷数据被编码到半色调图像中以产生数据承载半色调图像,包括在包括像素簇的半色调图像的单元内移位像素簇。