Contactless location information acquisition apparatus and location information acquisition method using the same
In a contactless location information acquisition apparatus and a location information acquisition method using the acquisition apparatus, the acquisition apparatus includes an imaging part, a modulation part and a controller. The imaging part is spaced apart from a moving object, and is configured to take picture of the object in a predetermined exposure time. The modulation part is configured to generate a motion blur to the pictured image, and is configured to move the imaging part to a predetermined first pattern, so as for the motion blurred image to have a second pattern. The controller is configured to obtain a location of the object from the motion blurred image for the exposure time.
1. An acquisition apparatus comprising:
an imaging part spaced apart from a moving object, and configured to take a picture of the object in a predetermined exposure time to provide a pictured image;
a modulation part configured to generate a motion blur to the pictured image by moving the imaging part along a predetermined first pattern, the motion blurred image having a second pattern,
the second pattern is a sum of movement of the object and the predetermined first pattern; and
a controller configured to obtain a location of the object from the motion blurred image for the exposure time by excluding movement of the predetermined first pattern on movement of the second pattern,
wherein the imaging part comprises a plurality of cameras configured to take pictures of each of feature points of the object, and
the modulation part is configured to move each the plurality of cameras with respective different patterns to form direction vectors of the plurality of cameras substantially perpendicular to each other.
2. The acquisition apparatus of claim 1 , further comprising:
a light source spaced apart from the object, and configured to irradiate light to the object; and
a reflecting member attached to a pictured surface of the object, and configured to reflect the light irradiated from the light source,
wherein the imaging part is configured to take a picture of the light reflected from the reflecting member, to obtain the pictured image.
3. The acquisition apparatus of claim 2 , wherein the controller is configured to obtain the location of the object according to time, based on a location of the predetermined first pattern and a location of the second pattern.
4. The acquisition apparatus of claim 3 , wherein the controller is configured to obtain the location of the object according to the time, and further based on a pattern of the light irradiated from the light source.
5. The acquisition apparatus of claim 4 , wherein the pattern of the light is provided by changing at least one of light intensity and light wavelength for the exposure time into a predetermined pattern.
6. The acquisition apparatus of claim 5 , wherein the light source is a light emitting diode (LED), and a red light, a green light and a blue light of the LED are emitted sequentially with the predetermined pattern or at a same time to provide the pattern of the light.
7. The acquisition apparatus of claim 1 , wherein at least one feature point of the feature points is located on a surface different from a surface of the object on which other feature points from among the feature points are formed.
8. An acquisition method comprising:
moving an imaging part with a predetermined first pattern and taking a picture of a moving object in a predetermined exposure time, to generate a motion blurred image having a second pattern,
the second pattern is a sum of movement of the object and the predetermined first pattern;
obtaining a location of the second pattern from the motion blurred image; and
obtaining a location of the object for the exposure time, based on the predetermined first pattern and the second pattern, by excluding movement of the predetermined first pattern on movement of the second pattern,
wherein said taking the picture comprises
taking pictures of each of feature points of the object, using the imaging part having a plurality of cameras, and
each of the plurality of cameras moves with a different pattern, to form direction vectors of the plurality of cameras substantially perpendicular to each other.
9. The acquisition method of claim 8 , wherein said moving the imaging part comprises:
using a modulation part connected to the imaging part to move at least one of a body, a lens and an image sensor of the imaging part with the predetermined first pattern for the exposure time.
10. The acquisition method of claim 8 , further comprising:
irradiating light to the object from a light source spaced apart from the object, to generate the motion blurred image based on reflected light from the object.
11. The acquisition method of claim 10 , wherein said obtaining the location of the object comprises
obtaining the location of the object according to time, based on the location of the first pattern and the location of the second pattern.
12. The acquisition method of claim 10 , wherein said irradiating the light to the object comprises
changing at least one of light intensity and light wavelength of the light irradiated to the object into a predetermined pattern.
13. The acquisition method of claim 12 , wherein said obtaining the location of the object comprises
obtaining the location of the object according to time, and further based on a pattern of the light irradiated from the light source.