Color optimization for visual representation

• US 9,111,479 B2
• Filed: 06/12/2013
• Issued: 08/18/2015
• Est. Priority Date: 06/12/2013
• Status: Active Grant

• Current Assignee: Documill Oy
• Original Assignee: Documill Oy
• Inventors: Konnola, Mika, Hanninen, Rami, Laakso, Terho
• Primary Examiner(s): Tieu, Benny Q
• Assistant Examiner(s): Sabah, Haris
• Application Number:
  US13/915,996
• Publication Number:
  US 20140368528A1
• Time in Patent Office: 797 Days
• US Class Current: 1/1
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 1/64 Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor H04N19/00 takes precedence

Abstract

A method for optimizing an amount of colors used in content data is described. At least one content object is received and it is analyzed if any of the received content objects is a predetermined type. At least one color used within the at least one content object of the predetermined type is determined and the received content objects are rendered to a raster canvas so that the at least one color is protected. Information on the at least one color is stored and at least one characteristic of the rendered content is compared to at least one predetermined criteria. In case of mismatch the amount of colors used in the content of the raster canvas is optimized so that the at least one color used in at least one rendered content object of the predetermined type is protected. Finally, the content is compressed and output.

Claims

1. A computer implemented method for optimizing an amount of colors used in content data, the method comprising:

receiving at least one content object;

determining whether the at least one received content object is a predetermined type; and

in response to the determination that the at least one received content object is the predetermined type,

determining at least one color used within the at least one content object of the predetermined type,

rendering the at least one received content object to a raster canvas wherein the rendering is configured to be performed by protecting the at least one color used in the at least one content object of the predetermined type,

storing information on the at least one color used in the at least one rendered content object of the predetermined type,

comparing at least one characteristic of the at least one rendered content object in the raster canvas to at least one predetermined criteria,

in response to a mismatch of the characteristic of the at least one rendered content object in the raster canvas with the at least one predetermined criteria, optimizing the amount of colors used in the content of the raster canvas, wherein the optimization is performed by protecting the at least one color used in the at least one rendered content object of the predetermined type,

compressing the content of the optimized content in the raster canvas, and

outputting the compressed content of the raster canvas.

2. The method as claimed in claim 1, wherein the at least one color comprises a set of colors used in all the received at least one content object of the predetermined type.

3. The method as claimed in claim 1, wherein the at least one color comprises a sub-set of a set of colors used in all the received at least one content object of the predetermined type.

4. The method as claimed in claim 1, wherein the amount of colors in the raster canvas is the at least one characteristic of the rendered content, which is compared to a color limit set for the raster canvas.

5. The method as claimed in claim 1, wherein the determination whether the at least one received content object is the predetermined type comprises determination of area information on each of the at least one content object.

6. The method as claimed in claim 5, further comprising comparison of a cumulative area information of the at least one content object of a first type to at least one of a cumulative area information of at least one other content object of a second type, and area information of the raster canvas.

7. The method as claimed in claim 6, further comprising defining control data for color optimization in response to the comparison of the area information.

8. The method as claimed in claim 7, wherein the control data is further utilized in at least one of the following:

selecting a file format for compressed content, selecting a color model for the file format, selecting a compression method for the content.

9. A system for optimizing an amount of colors used in content data, the system comprising:

one or more processors;

a memory including computer program code;

the memory and the computer program code configured to, with the processor, cause the system at least to perform;

receive at least one content object,

determine whether the at least one received content object is a predetermined type,

in response to the determination that the at least one received content object is the predetermined type, determine at least one color used within the at least one content object of the predetermined type,

render the at least one received content object to a raster canvas wherein the rendering is performed by protecting the at least one color used in the at least one content object of the predetermined type,

store information on the at least one color used in at least one rendered content object of the predetermined type,

compare at least one characteristic of the at least one rendered content object in the raster canvas to at least one predetermined criteria,

in response to a mismatch of the characteristic of the at least one rendered content object in the raster canvas with the at least one predetermined criteria, optimize the amount of colors used in the content of the raster canvas, wherein the optimization is performed by protecting the at least one color used in at least one rendered content object of the predetermined type,

compress the content of the optimized content in the raster canvas, and

output the compressed content of the raster canvas.

10. The system as claimed in claim 9, wherein the system is configured to compare the amount of colors in the raster canvas, which is the at least one characteristic of the rendered content, to a color limit set for the raster canvas.

11. The system as claimed in claim 9, wherein the system is configured to determine area information on each of the at least one content object during the determination whether the at least one received content object is the predetermined type.

12. The system as claimed in claim 11, wherein the system is configured to perform a comparison of a cumulative area information of the at least one content object of a first type to at least one of a cumulative area information of at least one other content object of a second type, and area information of the raster canvas.

13. The system as claimed in claim 12, wherein the system is configured to define control data for color optimization in response to the comparison.

14. The system as claimed in claim 13, wherein the system is configured to utilize the control data in at least one of the following:

selecting a file format for compressed content, selecting a color model for the file format, selecting a compression method for the content.

15. A non-transitory computer-readable storage medium storing portions of computer program code, wherein the portions of computer program code are computer-executable to implement the method comprising:

receiving at least one content object;

determining whether the at least one received content object is a predetermined type; and

in response to the determination that the at least one of received content object is the predetermined type,

determining at least one color used within the at least one content object of the predetermined type,

rendering the at least one received content object to a raster canvas wherein the rendering is configured to be performed by protecting the at least one color used in the at least one content object of the predetermined type,

storing information on the at least one color used in the at least one rendered content object of the predetermined type,

comparing at least one characteristic of the at least one rendered content object in the raster canvas to at least one predetermined criteria,

in response to a mismatch of the characteristic of the at least one rendered content object in the raster canvas with the at least one predetermined criteria, optimizing the amount of colors used in the content of the raster canvas, wherein the optimization is performed by protecting the at least one color used in the at least one rendered content object of the predetermined type,

compressing the content of the optimized content in the raster canvas, and

outputting the compressed content of the raster canvas.