Method and system for converting at least one first-spectrum image into a second-spectrum image
First Claim
1. A method for converting at least one image of a first spectrum into an image of a second spectrum, comprising:
- recording a first-spectrum reference image of a reference scene with a first-spectrum recording apparatus, the first-spectrum recording apparatus being a night-vision apparatus, the first-spectrum reference image comprising first image portions with corresponding first-spectrum sensor reference data;
providing corresponding second-spectrum reference information;
providing a set of reference data from at least part of the first-spectrum sensor reference data relating to the reference scene, and at least a corresponding part of the second-spectrum information relating to the reference scene;
providing a target first-spectrum image; and
converting the target first-spectrum image into a second-spectrum image using the set of reference data,wherein the first-spectrum sensor reference data comprises multi-band data, relating to at least two different parts of a light spectrum, and the second-spectrum reference information is true-color color information,wherein the providing the set of reference data comprises;
selecting, for a same reference scene, a plurality of first, first-spectrum, image portions and corresponding second, second-spectrum, image portions, such that reference scene image coordinates of a first image portion substantially correspond to reference scene image coordinates of a corresponding second image portion of the same reference scene, andcreating an index containing the first-spectrum sensor reference data and the second-spectrum information for the same reference scene such that each entry in the index refers to the first-spectrum sensor reference data and the corresponding second-spectrum information associated with a selected first image portion and a corresponding second image portion of the same reference scene; and
wherein the converting the target first-spectrum image into the second-spectrum image comprises;
finding, for individual portions of the target first-spectrum image, a closest matching entry in the index by comparing first-spectrum sensor data associated with the individual portions of the target first-spectrum image and the first-spectrum sensor reference data contained within entries of the index containing the first-spectrum reference data, andreplacing, for the individual portions of the target first-spectrum image, each target first-spectrum image portion with the second, second-spectrum, image portion, the second image portion being associated with the closest matching entry in the index for the individual portion of the target first-spectrum image.
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Abstract
Method for converting at least one image of a first spectrum into an image of a second spectrum, comprising: —recording at least one first-spectrum reference image (NRI) of at least one reference scene (RS) with a first-spectrum recording apparatus (1), the first-spectrum reference image (NRI) comprising first image portions with corresponding first-spectrum sensor reference data (b1, b2); —providing corresponding second-spectrum reference information (RGB); —providing at least one set of reference data (T1, T2) from at least part of the first-spectrum sensor reference data (b1, b2) relating to the reference scene (RS), and at least a corresponding part of the second-spectrum information (RGB) relating to that reference scene (RS); —providing at least one target first-spectrum image (NTI) or target second-spectrum image; and —converting each target first-spectrum image (NTI) or target second-spectrum image into a respective second-spectrum image (CI) or first-spectrum image, respectively, using the set of reference data (T1, T2).
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Citations
19 Claims
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1. A method for converting at least one image of a first spectrum into an image of a second spectrum, comprising:
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recording a first-spectrum reference image of a reference scene with a first-spectrum recording apparatus, the first-spectrum recording apparatus being a night-vision apparatus, the first-spectrum reference image comprising first image portions with corresponding first-spectrum sensor reference data; providing corresponding second-spectrum reference information; providing a set of reference data from at least part of the first-spectrum sensor reference data relating to the reference scene, and at least a corresponding part of the second-spectrum information relating to the reference scene; providing a target first-spectrum image; and converting the target first-spectrum image into a second-spectrum image using the set of reference data, wherein the first-spectrum sensor reference data comprises multi-band data, relating to at least two different parts of a light spectrum, and the second-spectrum reference information is true-color color information, wherein the providing the set of reference data comprises; selecting, for a same reference scene, a plurality of first, first-spectrum, image portions and corresponding second, second-spectrum, image portions, such that reference scene image coordinates of a first image portion substantially correspond to reference scene image coordinates of a corresponding second image portion of the same reference scene, and creating an index containing the first-spectrum sensor reference data and the second-spectrum information for the same reference scene such that each entry in the index refers to the first-spectrum sensor reference data and the corresponding second-spectrum information associated with a selected first image portion and a corresponding second image portion of the same reference scene; and wherein the converting the target first-spectrum image into the second-spectrum image comprises; finding, for individual portions of the target first-spectrum image, a closest matching entry in the index by comparing first-spectrum sensor data associated with the individual portions of the target first-spectrum image and the first-spectrum sensor reference data contained within entries of the index containing the first-spectrum reference data, and replacing, for the individual portions of the target first-spectrum image, each target first-spectrum image portion with the second, second-spectrum, image portion, the second image portion being associated with the closest matching entry in the index for the individual portion of the target first-spectrum image. - View Dependent Claims (2, 3, 4, 5, 6, 14, 15, 16, 17, 18)
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7. A system for converting a first-spectrum image into a second-spectrum image, the system comprising:
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a first-spectrum recording apparatus configured to generate first-spectrum sensor reference data relating to a reference scene, the first-spectrum recording apparatus being a night-vision apparatus, the first-spectrum sensor reference data comprising multi-band data relating to at least two different parts of the spectrum; a second-spectrum information provider configured to provide second-spectrum reference information relating to the reference scene, the second-spectrum reference information being true-color color information; a target image generator providing a first-spectrum target image of a target scene, wherein the target image generator is a night-vision apparatus; a converter configured to convert the first-spectrum target image into a second-spectrum image using the first-spectrum sensor reference data in combination with a corresponding part of the second-spectrum reference information; and a data processor, configured to process the first-spectrum sensor reference data and the second-spectrum reference information to provide at least one set of reference data by; selecting, for a same reference scene a plurality of first, first-spectrum, image portions from a first-spectrum reference image and corresponding second, second-spectrum, image portions, such that reference scene image coordinates of a first image portion substantially correspond to reference scene image coordinates of a corresponding second image portion of the same reference scene; and creating an index containing the first-spectrum sensor reference data and the second-spectrum reference information for the same reference scene such that each entry in the index refers to the first-spectrum sensor reference data and the corresponding second-spectrum reference information associated with a selected first image portion and a corresponding second image portion of the same reference scene; and wherein the converter is configured to convert the target first-spectrum image into the second-spectrum image by; finding, for individual portions of the target first-spectrum image, a closest matching entry in the index by comparing first-spectrum sensor data associated with the individual portions of the target first-spectrum image and the first-spectrum sensor reference data contained within entries of the index containing the first-spectrum reference data, and replacing, for the individual portions of the target first-spectrum image, each target first-spectrum image portion with the second, second-spectrum, image portion, the second image portion being associated with the closest matching entry in the index for the individual portion of the target first-spectrum image. - View Dependent Claims (8, 9, 10, 11, 12, 13, 19)
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Specification