Measuring distance from object by using size of pattern projected onto object
First Claim
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1. An apparatus for measuring a distance, the apparatus comprising:
- a camera unit that photographs an object;
a light transmission unit that irradiates an infrared light onto the object;
a film provided at an outlet of the light transmission unit and having a pattern having a first size allowing only a portion of light to be projected onto the object; and
a module unit that calculates a distance from the object by using a second size of a pattern projected onto the object which is obtained from an image of the camera unit;
wherein the film comprises;
an infrared film that cuts off the light; and
a plurality of holes formed in the infrared film and corresponding to the pattern,wherein the plurality of holes comprises a first hole and a second hole spaced apart from the first hole,wherein the camera unit and the module unit are provided in a same camera module,wherein the pattern having the first size and the pattern having the second size have the same shape,wherein the module unit calculates the distance from the object by comparing the first size of the pattern of the film with the second size of the pattern projected onto the object, andwherein the module unit comprises;
an infrared light reception unit that receives the infrared light;
a measuring unit that measures the second size of the pattern projected onto a surface of the object;
a comparing unit that compares the second size of the pattern with an intrinsic parameter; and
a calculating unit that calculates the distance based on a value detected by the comparing unit.
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Abstract
An apparatus for measuring a distance can include a camera module and a film having a reference pattern. The camera module can include an infrared LED transmission unit to transmit an infrared LED light toward the film and a module unit calculating a distance from an object by using a size of a pattern projected onto the object which is obtained from an image of a camera unit. The film can include an infrared film and a plurality of holes formed in the infrared film.
41 Citations
9 Claims
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1. An apparatus for measuring a distance, the apparatus comprising:
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a camera unit that photographs an object; a light transmission unit that irradiates an infrared light onto the object; a film provided at an outlet of the light transmission unit and having a pattern having a first size allowing only a portion of light to be projected onto the object; and a module unit that calculates a distance from the object by using a second size of a pattern projected onto the object which is obtained from an image of the camera unit; wherein the film comprises; an infrared film that cuts off the light; and a plurality of holes formed in the infrared film and corresponding to the pattern, wherein the plurality of holes comprises a first hole and a second hole spaced apart from the first hole, wherein the camera unit and the module unit are provided in a same camera module, wherein the pattern having the first size and the pattern having the second size have the same shape, wherein the module unit calculates the distance from the object by comparing the first size of the pattern of the film with the second size of the pattern projected onto the object, and wherein the module unit comprises; an infrared light reception unit that receives the infrared light; a measuring unit that measures the second size of the pattern projected onto a surface of the object; a comparing unit that compares the second size of the pattern with an intrinsic parameter; and a calculating unit that calculates the distance based on a value detected by the comparing unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for measuring a distance, the apparatus comprising:
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a camera unit that photographs an object; a light transmission unit that irradiates a light onto the object; a film provided at an outlet of the light transmission unit and having a pattern having a first size that allows only a portion of light to be projected onto the object; and a module unit that calculates a distance from the object by using a second size of a pattern projected onto the object which is obtained from an image of the camera unit; wherein the film comprises; an infrared film that cuts off the light; and a plurality of holes formed in the infrared film and corresponding to the pattern, wherein the plurality of holes comprises a first hole and a second hole spaced apart from the first hole, wherein the camera unit and the module unit are provided in a same camera module, wherein the pattern having the first size and the pattern having the second size have the same shape, wherein the module unit calculates the distance from the object by comparing the first size of the pattern of the film with the second size of the pattern projected onto the object, and wherein the camera module extracts information of the pattern formed on a surface of the object from image information collected by the camera unit and collects the information of the pattern formed on the surface of the object.
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Specification