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1. WO1997042754 - SYSTEME ET PROCEDE D'IMAGERIE EN COULEURS PERMETTANT UN RENDU A GRANDE VITESSE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:
1. A system for processing images, comprising:
an image file subsystem providing a source signal representing an input image; a color transformation subsystem operatively coupled to the image file subsystem and accepting as input the source signal and producing a target signal therefrom; and
an image forming subsystem operatively coupled to the color transformation subsystem and forming a physical manifestation of the input image in response to the target signal, the color transformation subsystem being configured to establish a memory "cube" area representative of possible source signals; to define a sub-cube portion of the memory area as representative of said source signal; to determine possible target signals corresponding to the sub-cube portion; and to determine the target signal responsive to the possible target signals.

2. A system as in claim 1, wherein the color transformation subsystem is further configured to divide the sub-cube portion into mini-cube portions and to determine possible target signals corresponding to each mini-cube portion.

3. A system as in claim 1, wherein the color transformation subsystem is configured to determine an accuracy of interpolation for each of the mini-cubes.

4. A system as in claim 1, wherein the color transformation subsystem is configured to add a noise signal to the source signal to yield a result signal, and to truncate the result signal.

5. A system as in claim 1, wherein the color transformation subsystem is configured to determine the target signal in a first manner in response to an accuracy of interpolation exceeding a predetermined threshold and to determine the target signal in a second manner in response to the accuracy of interpolation not exceeding a - predetermined threshold.

6. A system as in claim 5, wherein the first manner includes truncation.

7. A system as in claim 5, wherein the first manner includes interpolation.

δ. A method of processing a color image source signal to produce a target signal, comprising:
establishing a memory area representative of possible source signals;
defining a sub-cube portion of the memory area as representative of a source signal;
determining possible target signals corresponding to the sub-cube portion; and determining the target signal in response to the possible target signals.

9. A method as in claim δ, further comprising dividing the sub-cube portion into mini-cube portions and determining possible target signals corresponding to each mini-cube portion.

10. A method as in claim 9, further comprising determining an accuracy of interpolation for each of the mini-cube portions.

11. A method as in claim δ, wherein determining the target signal further comprises adding a noise signal to the source signal and truncating the resulting signal.

12. A method as in claim δ, further comprising determining the target signal in a first manner if an accuracy of interpolation exceeds a predetermined threshold and determining the target signal in a second manner if an accuracy of interpolation does not exceed a predetermined threshold.

13. A method as in claim 12, wherein the first manner includes interpolation. - 14. A method as in claim 12, wherein the first manner includes adding noise followed by truncation.

15. A system for processing images, comprising:
an image file subsystem providing a source signal representing an input image; a color transformation subsystem operatively coupled to the image file subsystem and accepting as input the source signal and producing a target signal therefrom; and
an image forming subsystem operatively coupled to the color transformation subsystem and forming a physical manifestation of the input image in response to the target signal, the color transformation subsystem being configured to determine an accuracy of interpolation for estimation of said target signal from said source signal and to use interpolation for said estimation in resonse to said accuracy exceeding a threshold.

16. A system for processing images, comprising:
an image file subsystem providing a source signal representing an input image; a color transformation subsystem operatively coupled to the image file subsystem and accepting as input the source signal and producing a target signal therefrom; and
an image forming subsystem operatively coupled to the color transformation subsystem and forming a physical manifestation of the input image in response to the target signal, the color transformation subsystem being configured to add noise to said source signal to yield a result signal and to truncate said result signal, so as to estimate determination of said target signal through interpolation.

17. A method of processing a color image source signal to produce a target signal, comprising:
checking validity of estimation of said target signal by interpolation; and
determining the target signal by interpolation in response to said checking indicating a validity for interpolation.
- lδ. A method of processing a color image source signal to produce a target signal, comprising: truncating a noise-added version of the source signal to yield a look-up table entry signal; and
determining the target signal in response to said look-up table entry signal.