Image analysis – Image transformation or preprocessing – Convolution
Patent
1996-11-13
2000-11-28
Bella, Matthew C.
Image analysis
Image transformation or preprocessing
Convolution
382199, 382266, 382269, 382278, G06K 15316
Patent
active
061545775
ABSTRACT:
A digital image processing method for detecting when and where an image has been altered or modified includes the steps of generating an edge map of an original digital image; convolving the edge map with a carrier signal to generate a dispersed edge map; and combining the dispersed edge map with the original digital image to create a combined image. The combined digital image is checked to determine if it has been modified by correlating the carrier signal with the combined image to produce a recovered edge map; and comparing the recovered edge map with the original image to detect modifications to the combined image.
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Honsinger Chris W.
Warnick James
Bella Matthew C.
Chawan Sheela
Close Thomas H.
Eastman Kodak Company
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