Hyper-spectral image measurement device and calibration method therefor, photographing module and device for skin diagnosis, skin diagnosis method, and skin image processing method
In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.
1. A device for detecting an object, comprising:
a housing detachably connected to a portable terminal and including a first barrel portion that has a tip part contacting a periphery of the object and a second barrel portion that has a diameter smaller than the first barrel portion, wherein the first barrel portion includes a light emitting device configured to irradiate a first light having a first wavelength to a biological tissue in the object through the tip part;
a filter disposed in the second barrel portion to receive a reflected light from the biological tissue that includes a portion of the first light and a second light having a second wavelength and configured to block the portion of the first light and pass the second light; and
a sensor disposed to receive the second light from the filter and configured to detect the second light,
wherein the first wavelength is a wavelength at which a predetermined substance in the object has a high absorption rate,
wherein the second wavelength is a wavelength at which the predetermined substance fluoresces and has a longer wavelength than the first wavelength,
wherein the sensor includes at least one of a blue light sensing element, a green light sensing element, or a red light sensing element.
2. The device of claim 1 , wherein the first light has a peak wavelength that is less than 420 nm.
3. The device of claim 1 , wherein the filter is disposed to be closer to the sensor than the light emitting device.
4. The device of claim 1 , wherein the sensor is an image senor.
5. The device of claim 1 , further including a lens that is located on a path through which light emitting from the biological tissue is incident on the sensor.
6. The device of claim 5 , wherein the lens is configured to block the portion of the first light and pass the second light.
7. The device of claim 6 , wherein the lens includes PMMA.
8. A method for measuring an object, comprising:
irradiating, from a light emitting device, a first light having a first wavelength to an object without using another light source other than the first light to the object, wherein the object is configured to receive the first light and emit a light including a portion of the first light and emit a second light having a second wavelength longer than the first wavelength, wherein the light emitting device is included in a first barrel portion of a housing detachably connected to a portable terminal, the first barrel portion having a tip part contacting a periphery of the object and having a diameter greater than a second barrel portion of the housing;
applying a filtering operation to the light emitted from the object that includes a portion of the first light and a second light having a second wavelength longer than the first wavelength, the filtering operation configured to block the portion of the first light and pass the second light;
obtaining an image of a filtered light by using an image sensor; and
performing an image process operation on an obtained image based on optical information of the second wavelength.
9. The method of claim 8 , wherein the first light has a peak wavelength that is less than 420 nm.
10. The method of claim 8 , wherein the irradiating the first light is performed by a light emitting device and the filtering operation is performed by a filter that is disposed closer to the image sensor than the light emitting device.
11. The method of claim 8 , wherein the first wavelength is a wavelength at which a predetermined substance in the object has a high absorption rate.
12. The method of claim 11 , wherein the second wavelength is a wavelength at which the predetermined substance fluoresces and has a longer wavelength than the first wavelength.