# US 8,571,310 B2 · Creating a luminance effect using an ICC profile > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,571,310 B2 - Document ID: US8571310B2 - Status: Granted - Kind: B2 - Application number: 13/308,397 - Filed: 2011-11-30 - Published: 2013-05-30 - Granted: 2013-10-29 - Earliest claimed: 2011-11-30 - Assignees: Konica Minolta Laboratory U.S.A., Inc. - Applicants: Douglas Walter Obrecht - Inventors: Douglas Walter Obrecht - Web page: https://patentgrep.com/patent/US8571310B2 ## CPC - H04N 1/6027: {Correction or control of colour gradation or colour contrast (H04N1/6058 takes precedence)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A method for creating a luminance effect, including: obtaining a source image in a red-green-blue (RGB) color space; obtaining a luminance effect parameter; generating an international color consortium (ICC) device link profile based on the luminance effect parameter; and converting the source image in RGB color space to a final image in RGB color space using a color conversion function with the ICC device link profile. ## Claims ### Claim 1 A method for creating a luminance effect, comprising: obtaining, by a processor, a source image in a red-green-blue (RGB) color space; obtaining, by the processor, a luminance effect parameter; generating, by the processor, an international color consortium (ICC) device link profile based on the luminance effect parameter; and converting, by the processor, the source image in RGB color space to a final image in RGB color space using a color conversion function with the ICC device link profile. ### Claim 2 (depends on 1) The method of claim 1, wherein the luminance parameter comprises a brightness parameter. ### Claim 3 (depends on 1) The method of claim 1, wherein the luminance parameter comprises a contrast parameter. ### Claim 4 (depends on 1) The method of claim 1, wherein generating the ICC device link profile comprises: calculating a start position and an end position for an M-curve from the luminance effect parameter; and generating a lookup table implementing the M-curve, wherein the ICC device link profile includes the lookup table implementing the M-curve. ### Claim 5 (depends on 4) The method of claim 4, wherein the M-curve corresponds to one selected from a group consisting of a red component, a green component, and a blue component of the RGB color space. ### Claim 6 (depends on 1) The method of claim 1, wherein the ICC comprises a plurality of unity N-curves corresponding to a red component, a green component, and a blue component of the RGB color space. ### Claim 7 (depends on 1) The method of claim 1, wherein converting the source image comprises: generating a color effects transform from the ICC device link profile; mapping, using the color effects transform, a RGB tuple of a pixel of the source image to a final RGB tuple; and setting a red component, a green component, and a blue component of a pixel in the final image based on the final RGB tuple. ### Claim 8 (depends on 1) The method of claim 1, further comprising: converting the source image from an arbitrary color space to the RGB color space; and converting the final image from the RGB color space to the arbitrary color space. ### Claim 9 A non-transitory computer readable medium (CRM) storing instructions for creating a luminance effect, the instructions comprising functionality for: obtaining a source image in a red-green-blue (RGB) color space; obtaining a luminance effect parameter; generating an international color consortium (ICC) device link profile based on the luminance effect parameter; and converting the source image in RGB color space to a final image in RGB color space using a color conversion function with the ICC device link profile. ### Claim 10 (depends on 9) The non-transitory CRM of claim 9, wherein the luminance parameter comprises a brightness parameter. ### Claim 11 (depends on 9) The non-transitory CRM of claim 9, wherein the luminance parameter comprises a contrast parameter. ### Claim 12 (depends on 9) The non-transitory CRM of claim 9, wherein the instructions for generating the ICC device link profile comprise functionality for: calculating a start position and an end position for an M-curve from the luminance effect parameter; and generating a lookup table implementing the M-curve, wherein the ICC device link profile includes the lookup table implementing the M-curve. ### Claim 13 (depends on 12) The non-transitory CRM of claim 12, wherein the M-curve corresponds to one selected from a group consisting of a red component, a green component, and a blue component of the RGB color space. ### Claim 14 (depends on 9) The non-transitory CRM of claim 9, wherein the ICC device link profile comprises a plurality of unity N-curves corresponding to a red component, a green component, and a blue component of the RGB color space. ### Claim 15 (depends on 9) The non-transitory CRM of claim 9, wherein the instructions for converting the source image comprise functionality for: generating a color effects transform from the ICC device link profile; mapping, using the color effects transform, a RGB tuple of a pixel of the source image to a final RGB tuple; and setting a red component, a green component, and a blue component of a pixel in the final image based on the final RGB tuple. ### Claim 16 (depends on 9) The non-transitory CRM of claim 9, the instructions further comprising functionality for: converting the source image from an arbitrary color space to the RGB color space; and converting the final image from the RGB color space to the arbitrary color space. ### Claim 17 A system for creating a luminance effect from a luminance effect parameter, comprising: a processor; a buffer for storing a portion of a source image in a RGB color space; a color profile module executing on the processor and configured to generate an international color consortium (ICC) device link profile based on the luminance effect parameter; and a conversion engine executing on the processor and comprising a color converter configured to convert the portion in the buffer to a final image in RGB color space using a color effects transform generated from the ICC device link profile. ### Claim 18 (depends on 17) The system of claim 17, further comprising: an M-curve generator configured to: calculate a start position and an end position for an M-curve from the luminance effect parameter; and generate a lookup table implementing the M-curve, wherein the ICC device link profile includes the lookup table implementing the M-curve. ### Claim 19 (depends on 17) The system of claim 17, wherein the conversion engine further comprises: a transform generator configured to generate the color effects transform from the ICC device link profile, wherein the color effects transform maps a RGB tuple of a pixel of the source image to a final RGB tuple. ### Claim 20 (depends on 19) The system of claim 19, wherein the conversion engine is configured to: set a red component, a green component, and a blue component of a pixel in the final image based on the final RGB tuple.