Color image conversion using chroma
AssigneeHewlett-Packard Development Company, L.P.
InventorsMarti Maria Saguer, Laura Alicia Clemente Gomez
Life of this patent
Estimating the term…
Abstract
In one example, a color image is converted to a gray image and/or a black and white image. The amount of chroma in an input image is detected and conversion to gray and/or black and white of the input image is computed simultaneously.
Claims13
A method of converting a color image to a gray image and/or a black and white image, the method comprising, simultaneously:
- detecting the amount of chroma in an input image;
- computing conversion to gray and/or black and white of the input image;
- and
- converting a plurality of elements of an input image into International Color Consortium Profile Connection Space (ICC PCS);
- wherein the detection of the amount of chroma in an input image comprises detecting the amount of chroma of each element of the converted image;
- and
- wherein the computation of the conversion to gray and/or black and white comprises computing conversion to gray and/or black and white of the converted image.
An apparatus for converting a color image to a gray image and/or a black and white image, the apparatus comprising
- a detector configured to detect the amount of chroma in an input image;
- a processor configured to compute conversion to gray and/or black and white of the input image, and
- a first output channel configured to output a function of the amount of chroma;
- wherein the detector and processor are in parallel such that detecting the amount of chroma in an input image and computing conversion to gray and/or black and white of the input image are performed simultaneously;
- and
- wherein the apparatus further comprises a third output channel configured to output the pure black and white rendering of the input image, wherein the third output channel is parallel with respect to the first output channel.
The apparatus according to 9, wherein the apparatus further comprises a second output channel configured to output the greyscale representation of the input image, wherein the second output channel is parallel with respect to the first output channel.
The apparatus according to 11, wherein the apparatus further comprises a third output channel configured to output the pure black and white rendering of the input image, wherein the third output channel is parallel with respect to the first and second output channels.
An apparatus for converting a color image to a gray image and/or a black and white image, the apparatus comprising:
- a detector configured to detect the amount of chroma in an input image;
- a processor configured to compute conversion to gray and/or black and white of the input image, and
- a converter configured to convert a plurality of elements of an input image into International Color Consortium Profile Connection Space (ICC PCS);
- wherein the detector and processor are in parallel such that the detection of the amount of chroma in an input image and the computing conversion to gray and/or black and white of the input image are performed simultaneously;
- wherein the detection of the amount of chroma in an input image comprises detecting the amount of chroma of each element of the converted image;
- and
- wherein the computation of the conversion to gray and/or black and white comprises computing conversion to gray and/or black and white of the converted image.
Dependencies are inferred from the claim text.