Method and apparatus for generating a multi-layer correlation mark via a monochrome printer
AssigneeXerox Corporation
InventorEdward CHAPMAN
Life of this patent
Estimating the term…
Abstract
A method, non-transitory computer readable medium and apparatus for generating a multi-layer correlation mark via a monochrome printer are disclosed. For example, the method includes setting a first scalar value of a channel of the monochrome printer, setting a second scalar value of the channel of the monochrome printer, generating a first layer of the multi-layer correlation mark at the first scalar value of the channel, generating a second layer of the multi-layer correlation mark at the second scalar value of the channel and printing the multi-layer correlation mark comprising the first layer at the first scalar value of the channel and the second layer at the second scalar value of the channel.
Claims20
A method for generating a multi-layer correlation mark via a monochrome printer, comprising:
- setting, by a processor, a first scalar value of a channel of the monochrome printer;
- setting, by the processor, a second scalar value of the channel of the monochrome printer, wherein the first scalar value and the second scalar value each comprises a percentage value between 0 percent and 100 percent of a level of modulation of the channel, wherein the second scalar value and the first scalar value have a difference greater than 25 percent;
- generating, by the processor, a first layer of the multi-layer correlation mark at the first scalar value of the channel;
- generating, by the processor, a second layer of the multi-layer correlation mark at the second scalar value of the channel;
- and
- printing, by the processor, the multi-layer correlation mark comprising the first layer at the first scalar value of the channel and the second layer at the second scalar value of the channel.
(canceled)
(canceled)
A non-transitory computer-readable medium storing a plurality of instructions, which when executed by a processor, cause the processor to perform operations for generating a multi-layer correlation mark via a monochrome printer, the operations comprising:
- setting a first scalar value of a channel of the monochrome printer;
- setting a second scalar value of the channel of the monochrome printer, wherein the first scalar value and the second scalar value each comprises a percentage value between 0 percent and 100 percent of a level of modulation of the channel, wherein the second scalar value and the first scalar value have a difference greater than 25 percent;
- generating a first layer of the multi-layer correlation mark at the first scalar value of the channel;
- generating a second layer of the multi-layer correlation mark at the second scalar value of the channel;
- and
- printing the multi-layer correlation mark comprising the first layer at the first scalar value of the channel and the second layer at the second scalar value of the channel.
(canceled)
(canceled)
A method for generating a multi-layer correlation mark via a monochrome printer, comprising:
- setting, by a processor, a first scalar value, wherein the first scalar value represents a percentage of a grayscale value of a grayscale channel of the monochrome printer that is applied;
- setting, by the processor, a second scalar value, wherein the second scalar value represents a percentage of the grayscale value of the grayscale channel of the monochrome printer that is applied, wherein the difference between the second scalar value and the first scalar value is at least 25 percent;
- generating, by the processor, a first layer of the multi-layer correlation mark via the grayscale value multiplied by the first scalar value;
- generating, by the processor, a second layer of the multi-layer correlation mark via the grayscale value multiplied by the second scalar value;
- and
- printing, by the processor, the multi-layer correlation mark comprising the first layer and the second layer within a common area such that a first image of the first layer and a second image of the second layer are displayed within the common area via a key.
Dependencies are inferred from the claim text.