Method and apparatus for generating and storing ex

专利名称：Method and apparatus for generating and

storing extended dynamic range digitalimages

发明人：Gallagher, Andrew C., c/o Eastman Kodak

Company,Spaulding, Kevin E., c/o EastmanKodak Company

申请号：EP02075099.8申请日：20020114公开号：EP1227661A2公开日：20020731

专利附图：

摘要：An image capture system for generating and storing an extended dynamicrange digital image, includes a sparsely sampled extended dynamic range image sensingdevice having fast photosites with a predetermined response to light exposure

interspersed with slow photosites with a slower response to the same light exposure forproducing a sparsely sampled high resolution digital image having fast pixel valuesproduced by the fast photosites and slow pixel values produced by the slow photosites;a digital image processor that employs the slow pixel values to expand the dynamicrange of the fast pixel values in the sparsely sampled high resolution digital image toform a full resolution digital image having an extended dynamic range; a color encoderfor reducing the dynamic range of the full resolution digital image to fit within thedynamic range of a storage color space having a dynamic range less than the dynamicrange of the full resolution digital image to form a limited dynamic range digital imagerepresented in the storage color space and for producing a residual image representinga difference between the full resolution digital image and the limited dynamic rangedigital image that can be used with the limited dynamic range digital image toreconstruct the full resolution digital image; and a digital image store for storing thelimited dynamic range digital image in association with the residual image.

申请人：EASTMAN KODAK COMPANY

地址：343 State Street Rochester, New York 14650 US

国籍：US

代理机构：Parent, Yves

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