Reduction of differential resolution of separations
(19)AUSTRALIAN PATENT OFFICE(54)TitleReduction of differential resolution ofseparations(21) Application No: 2003297426(22) Application Date: 2003.12.19(87) WIPONo: WO04/059574 (30) Priority Data (31) Number (32) 60/434,650 10/657,243 10/657,138Date2002.12.20 2003.09.09 2003.09.09 (33) Country US USus £0050825 (43) Publication Date : 2004.07.22(43) Publication Journal Date : 2004.08.26(71) Applicant(s) America Online, Inc.;Warner Brothers Entertainment Inc.(72) Inventor(s) Perlmutter, Sharon M.; Wang, Eric;Klamer, Paul R.; Perlmutter, Keren O.(74)Agent/AttorneyDavies Collison Cave,Level 15 1 Nicholson Street, MELBOURNE, VIC, 3000 (H) Application NoAU2003297426 A8(19)AUSTRALIAN PATENT OFFICE(54)TitleReduction of differential resolution ofseparations(21) Application No: 2003297426(22) Application Date: 2003.12.19(87) WIPONo: WO04/059574 (30) Priority Data (31) Number (32) 60/434,650 10/657,243 10/657,138Date2002.12.20 2003.09.09 2003.09.09 (33) Country US USus £0050825 (43) Publication Date : 2004.07.22(43) Publication Journal Date : 2004.08.26(71) Applicant(s) America Online, Inc.;Warner Brothers Entertainment Inc.(72) Inventor(s) Perlmutter, Sharon M.; Wang, Eric;Klamer, Paul R.; Perlmutter, Keren O.(74)Agent/AttorneyDavies Collison Cave,Level 15 1 Nicholson Street, MELBOURNE, VIC, 3000 Certain disclosed implementations use digital image processing to reduce the differential resolution among separations or images in film frames, such as, for example, red flare. A location in the red image may be selected using information from another image (1420). The selected location may be modified using information from that other image (1440). The selection may include comparing features of an edge in the first image with features of a corresponding edge in the other image. The modification may include performi ng wavelet transformations (1410) of the two images and copying certain coefficients (or a function of these coefficients) produced by the applicati on of the transformation to the second image to the coefficients produced by th e application of the transformation to the first image. The copied coefficient s may be correlated with the selected location. Other disclosed techniques var y from the above and may be applied to other fields. 1. A method comprising:
accessing a first image containing first information about a scene; accessing a second image containing second information about the scene, wherein a portion of the first image and a portion of the second image have differential resolution; identifying a location at which to modify a property of the first image, the location being in a portion of the first image; and lowering the differential resolution by modifying the property at the location in the first image using information from the second image. 2. The method of claim 1 wherein modifying the property at the location in the first image comprises modifying information produced by application of a first transformation to the portion of the first image using information produced by application of a second transformation to the portion of the second image. 3. The method of claim 2 wherein:
the first transformation comprises a first wavelet transformation, the second transformation comprises a second wavelet transformation, and modifying information produced by application of the first transformation comprises copying a coefficient from a specific location in a result produced by application of the second wavelet transformation to the specific location in a result produced by application of the first wavelet transformation. 4. The method of claim 1 wherein the first image and the second image are color separations of a film frame. 5. The method of claim 4 wherein the first image is a red separation and the differential resolution results in red fringing. 6. The method of claim 1 wherein the first and second images are extracted from a composite color image. 7. The method of claim 1 further comprising determining a non-modify location at which the property is not to be modified. 8. The method of claim 1 further comprising applying a feathering technique to a region of the first image including the location at which the property is to be modified, the feathering technique being applied after the property at the location is modified. 9. The method of claim 1 wherein modifying the property at the location comprises:
performing a transformation in only a first direction; and producing a modified first image. 10. The method of claim 1 wherein accessing a second image comprises accessing a second image from a plurality of images based on one or more criteria. 11. The method of claim 1 wherein identifying the location is performed interactively. 12. The method of claim 1 wherein identifying the location comprises selecting one or more edges to modify. 13. The method of claim 12 wherein:
selecting one or more edges to modify comprises selecting a plurality of edges to modify, and the method further comprises:
connecting two selected edges based on properties of the two selected edges; and determining an edge extent for the connected selected edges. 14. An apparatus comprising a computer readable medium having instructions stored thereon that when executed by a machine result in at least the following:
accessing a first image containing first information about a scene; accessing a second image containing second information about the scene, wherein a portion of the first image and a portion of the second image have differential resolution; identifying a location at which to modify a property of the first image, the location being in a portion of the first image; and lowering the differential resolution by modifying the property at the location in the first image using information from the second image. 15. The apparatus of claim 14 wherein modifying the property at the location in the first image comprises modifying information produced by application of a first transformation to the portion of the first image using information produced by application of a second transformation to the portion of the second image. 16. The apparatus of claim 14 wherein the first image is a red separation and the differential resolution results in red fringing. 17. An apparatus having stored thereon a resolution-enhanced image, wherein the resolution-enhanced image comprises:
a first component image; and a second component image, including a portion having a property modified to lower a differential resolution between the first component image and the second component image, the property being modified using first-component information from the first component image. 18. The apparatus of claim 17 wherein:
the first-component information is produced by application of a wavelet transformation to a certain portion of the first component image, the certain portion corresponding to the portion of the second component image, and the property is modified by using the first-component information to modify second-component information produced by application of a wavelet transformation to the portion of the second component image. 19. The apparatus of claim 17 wherein:
the resolution-enhanced image comprises a color composite image that includes first-color information for a first color and second-color information for a second color, the first component image comprises the first-color information for the first color in the color composite image, and the second component image comprises the second-color information for the second color in the color composite image. 20. The apparatus of claim 17 wherein:
the resolution-enhanced image comprises a set of color separations, such that the resolution-enhanced image may be displayed by combining a display of each color separation in the set, the set including a first color separation and a second color separation, the first component image comprises the first color separation, and the second component image comprises the second color separation. 21. The apparatus of claim 17 wherein the location of the portion is determined based on location-determining information obtained at least in part from the first component image. 22. The apparatus of claim 17 wherein the location of the portion is determined based on a time-domain comparison of the portion of the second component image and a corresponding portion of the first component image.