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US 11,079,277 B2Granted
Spectral imaging device and method
AssigneeNational Taiwan University
InventorChing-Fuh Lin
Life of this patent
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Abstract
The present invention provides a spectral imaging apparatus and method featuring in that spectra are obtained from the captured photographs for composition analysis. In addition, the environment can be protected by using to the spectral imaging device and method. Furthermore, a true color photo can also be obtained.
Claims20
A spectral imaging device, comprising:
- a diode array comprising N diodes, wherein N is a positive integer, the N diodes are N light-emitting diodes or N laser diodes, and each of the N diodes emits a light having a wavelength range different from that of other diodes;
- and
- an image sensor continuously capturing N images of an object or a scene having the object over a spectral range, the spectral range being divided into N spectral bands, each of the N diodes corresponding to one of the N spectral bands, wherein for each capture, the image sensor captures an image over one of the N spectral bands, and only the diode corresponding to the one of the N spectral bands emits light to provide a light source for capturing the image, and the remaining diodes do not emit light, and the image sensor further captures an image of the object or the scene having the object on a condition that all of the N diodes do not emit light;
- wherein each of the spectral bands has a bandwidth equal to or less than 10 nm.
1 more element
A spectral imaging method, comprising the steps of:
- providing a diode array that comprising N diodes, wherein N is a positive integer, the N diodes are N light-emitting diodes or N laser diodes, and each of the N diodes emits a light having a wavelength range different from that of other diodes;
- continuously capturing N images of an object or a scene having the object over a spectral range, wherein the spectral range is divided into N spectral bands, each of the diodes corresponding to one of the N spectral bands, and wherein for each capture, one image is captured over one of the N spectral bands, and only the diode corresponding to the one of the N spectral bands emits light to provide a light source for capturing the image, and the remaining diodes do not emit light;
- capturing an image of the object or the scene having the object on a condition that all of the N diodes do not emit light;
- obtaining spectra of individual pixels of the object over the spectral range from the captured N+1 images;
- and
- determining the composition of the object according to the spectra.
3 more elements
Dependencies are inferred from the claim text.