초록 ▼

The present disclosure relates to advanced signal processing including digital watermarking and steganography. One method includes: obtaining image data representing imagery in a first color mode; steganographically embedding a watermark signal into the image data, thereby generating watermarked ima

The present disclosure relates to advanced signal processing including digital watermarking and steganography. One method includes: obtaining image data representing imagery in a first color mode; steganographically embedding a watermark signal into the image data, thereby generating watermarked image data; obtaining reader data representing an input color mode of a reader configured to detect or decode the watermarked image data, wherein the input color mode is different from the first color mode; transforming the watermarked image data from the first color mode to the input color mode; estimating a signal strength of the watermark signal within the transformed watermark image data; and visually displaying the estimated signal strength. The estimated signal strength can be visually displayed as a multi-color heat map. Of course, other combinations are described as well.

대표청구항 ▼

1. A method comprising: obtaining image data representing imagery in a first color mode;steganographically embedding a watermark signal into the image data, thereby generating watermarked image data;obtaining reader data representing an input color mode of a reader configured to detect or decode the

1. A method comprising: obtaining image data representing imagery in a first color mode;steganographically embedding a watermark signal into the image data, thereby generating watermarked image data;obtaining reader data representing an input color mode of a reader configured to detect or decode the watermarked image data, wherein the input color mode is different from the first color mode;transforming the watermarked image data from the first color mode to the input color mode, in which the input color mode corresponds to or is compatible with a color space associated with the reader;estimating a signal strength of the watermark signal within the transformed watermark image data; andvisually displaying the estimated signal strength spatially relative to the image data, with a first color representing first signal strength and a second color representing second signal strength, in which the second signal strength comprises a higher signal strength relative to the first signal strength, and with a third color representing a third signal strength comprising a signal strength between the first signal strength and the second signal strength. 2. The method of claim 1 in which the estimated signal strength is visually displayed as a multi-color heat map spatially relative to the image data. 3. A non-transitory, computer-readable medium comprising instructions to cause a computer processor to perform the method of claim 1. 4. A method comprising: obtaining image data representing imagery;steganographically embedding a watermark signal into the image data, thereby generating watermarked image data;obtaining printer data representing an output color mode of a printer configured to print the watermarked image data;transforming the watermarked image data to the output color mode;obtaining reader data representing an input color mode of a reader configured to detect or decode printed watermarked image data, wherein the input color mode is different from the output color mode;transforming the watermarked image data from the output color mode to the input color mode, in which the input color mode corresponds to or is compatible with a color space associated with the reader;estimating a signal strength of the watermark signal within the transformed watermark image data; andvisually displaying the estimated signal strength spatially relative to the image data. 5. The method of claim 4 in which the estimated signal strength is visually displayed as a multi-color heat map spatially relative to the image data. 6. A non-transitory, computer-readable medium comprising instructions to cause a computer processor to perform the method of claim 4. 7. A method comprising: obtaining image data representing imagery;encoding data representing picture portions of the image data with a plural-bit signal, thereby generating encoded image data;obtaining substrate data associated with a type of or surface finish of a substrate upon which the encoded image data will be printed during printing, the printing to yield printed encoded image data;obtaining reader data associated with a reader configured to detect or decode the plural-bit signal from the printed encoded image data;adapting the encoded image data according to the substrate data and the reader data, said adapting yielding adapted encoded image data;estimating a signal strength of the plural-bit signal encoded within the adapted encoded image data; andvisually displaying the estimated signal strength spatially relative to the image data. 8. The method of claim 7 in which the estimated signal strength is visually displayed as a multi-color heat map spatially relative to the image data. 9. The method of claim 8 in which the estimated signal strength is visually displayed spatially relative to the image data with a first color representing first signal strength and a second color representing second signal strength, in which the second signal strength comprises a signal strength that is relative higher than the first signal strength. 10. The method of claim 9, further comprising visually displaying the estimated signal strength spatially relative to the image data, with a third color representing a third signal strength comprising a signal strength between the first signal strength and the second signal strength. 11. The method of claim 7 in which said adapting adapts the encoded image data according to the substrate data, the reader data and color profile information of a printer that will print the printed encoded image data. 12. The method of claim 7 in which the substrate data associated with a substrate upon which the encoded image data will be printed comprises data associated with surface finish. 13. The method of claim 7 in which the substrate data associated with a substrate upon which the encoded image data will be printed comprises data associated with a plastic or metal substrate. 14. The method of claim 7 in which the reader data associated with the reader comprises a color profile associated with the reader. 15. The method of claim 14 in which the color profile comprises an ICC color profile format. 16. The method of claim 7 in which the reader data associated with the reader comprises reader type information. 17. The method of claim 7 in which said encoding data representing picture portions of the image data with a plural-bit signal comprises digital watermarking. 18. The method of claim 7 in which said encoding data representing picture portions of the image data with a plural-bit signal comprises steganographic encoding. 19. The method of claim 7 in which the substrate data comprises data associated with a type of substrate, the type of substrate comprising paper, cardboard, metal, plastic or foil. 20. The method of claim 7 in which the substrate data comprises data associated with a surface finish of the substrate, the surface finish comprising matte or glossy. 21. A method comprising: obtaining image data representing imagery;embedding data representing picture portions of the image data with a plural-bit signal, thereby generating embedded image data;obtaining printer data associated with a printer that is expected to print the embedded image data, in which the printer yields printed embedded image data;obtaining reader data associated with a reader configured lo detect or decode the plural-bit signal from the printed embedded image data;processing the embedded image data according lo the printer data and the reader data, said processing yielding processed embedded image data;estimating a signal strength of the plural-bit signal embedded within the processed embedded image data; andvisually displaying the estimated signal strength spatially relative to the image data. 22. The method of claim 21 in which the estimated signal strength is visually displayed as a multi-color heat map spatially relative to the image data. 23. The method of claim 21 further comprising re-embedding the data representing picture portions of the image data with a plural-bit signal based on an analysis of the estimated signal strength, the re-embedding limited to a subset of image patches that comprises less image patches relative to the image data, thereby generating re-embedded image data. 24. The method of claim 21 in which the printer data comprises printer color profile data describing an output color profile of the printer. 25. The method of claim 24 in which the output color profile comprises an ICC color profile. 26. The method of claim 21 in which the printer data comprises printer type data. 27. The method of claim 26 in which the printer type data comprises data identifying a printing process comprising offset, flexography, or digital printing. 28. The method of claim 21 in which said embedding data representing picture portions of the image data with a plural-bit signal comprises digital watermarking. 29. The method of claim 21 in which said embedding data representing picture portions of the image data with a plural-bit signal comprises steganographic embedding. 30. The method of claim 21 in which the estimated signal strength is visually displayed spatially relative to the image data with a first color representing first signal strength and a second color representing second signal strength, in which the second signal strength comprises a signal strength that is relative higher than the first signal strength. 31. The method of claim 30, further comprising visually displaying the estimated signal strength spatially relative to the image data with a third color representing a third signal strength comprising a signal strength between the first signal strength and the second signal strength. 32. The method of claim 21 in which the printer data comprises printer identifier data or printer manufacturer data. 33. The method of claim 21 in which the primer data comprising data associated with the printer's color gamut.