METHOD OF MULTISPECTRAL IMAGING AND AN APPARATUS THEREOF
First Claim
1. A multispectral imaging method comprising:
- determining an on-off combination of a plurality of light sources illuminating a scene;
illuminating the scene with the light sources according to the on-off combination selected on the basis of a first control signal generated by a microcontroller;
capturing an image of the scene by operating a camera on the basis of a second control signal synchronized with the first control signal;
determining a plurality of spectral basis functions and weights of the spectral basis functions; and
acquiring a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights.
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Abstract
A multispectral imaging method and system is provided. A multispectral imaging method of the present invention includes determining an on-off combination of a plurality of light sources illuminating a scene; illuminating the scene with the light sources according to the on-off combination selected on the basis of a first control signal generated by a microcontroller; capturing an image of the scene by operating a camera on the basis of a second control signal synchronized with the first control signal; determining a plurality of spectral basis functions and weights of the spectral basis functions; and acquiring a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights. The multispectral imaging method of the present invention is practical and efficient in that a continuous spectral reflectance image can be acquired with a minimized number of measurements required for obtaining spectral reflectance. Accordingly, the multispectral imaging method of the present invention can be applied to various fields, such as image reproduction and medical imaging, while overcoming performance limits of the conventional RGB imaging techniques.
35 Citations
15 Claims
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1. A multispectral imaging method comprising:
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determining an on-off combination of a plurality of light sources illuminating a scene; illuminating the scene with the light sources according to the on-off combination selected on the basis of a first control signal generated by a microcontroller; capturing an image of the scene by operating a camera on the basis of a second control signal synchronized with the first control signal; determining a plurality of spectral basis functions and weights of the spectral basis functions; and acquiring a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A multispectral imaging system comprising:
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a microcontroller which generates an on-off control signal indicating an on-off combination of light sources illuminating a scene and generates an operation control signal in synchronization with the on-off control signal; a plurality of light sources that turn on according to the on-off combination indicated by the on-off control signal to illuminate the scene; a camera which captures an image of the scene on the basis of the operation control signal; and a multispectral image generator which determines a plurality of spectral basis functions and weights of the spectral basis functions, acquires a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification