KR20100020200A - Stereo vision camera - Google Patents

Abstract

PURPOSE: A stereo vision camera is provided to adjust a coordinate for a 3D object by projecting two images onto the same plane. CONSTITUTION: A stereo vision camera for obtaining a 3D image includes an image sensor(10), a prism(20) and lenses(11,12). The image sensor projects two images onto the same plane, and is split into two parts. The image sensor is arranged on one substrate, and the prism and the lenses are plated on the upper part of the image sensor. In order to obtain the two images, the prism or the lenses are arranged at the both ends of the lenses.

Description

Stereo Vision Camera for Three-Dimensional Image Acquisition {Stereo Vision Camera}

The present invention relates to a stereo vision camera for three-dimensional image acquisition, and more particularly to a stereo vision camera for acquiring a three-dimensional image using a prism or a lens.

In a stereo vision camera for acquiring a three-dimensional image, two image sensors arranged in parallel with each other are used. Since the two image sensors view a three-dimensional object in different directions, images obtained by the two image sensors are different from each other. . Therefore, by finding the same point in the two images and comparing the displacement of the left image and the right image, information on the distance could be obtained.

However, in order to measure distance and depth information by using two image sensors as described above, when optical patterning is performed, if a tilt occurs, one resolution is distorted or a motion occurs. There was a problem that the image matching is not properly implemented in the three-dimensional image can not be properly caught.

The present invention has been made to solve the above problems of the prior art, to provide a stereo vision camera for projecting the left and right images on one sensor by dividing the image sensor into two parts using a prism or a lens. have.

According to an embodiment of the present invention, a stereo vision camera using a prism or a lens for obtaining a 3D image according to the present invention, in a stereo vision camera for obtaining a 3D image, projects two images onto the same plane. An image sensor divided into portions and disposed on one substrate; and a prism or a lens positioned on the image sensor and separately separated from both sides to obtain two images left and right on the image sensor.

The left eye lens and the right lens may further include a left eye lens and a right lens positioned between the image sensor and the prism or the lens to collect light transmitted from the prism or the lens in the center of each part of the image sensor divided into two parts. have.

The optical path may be refracted by adjusting the number and arrangement of the prism or the lens according to the direction of the light incident on the prism or the lens.

In addition, it is possible to minimize the tolerance due to the movement by directly attaching the prism or lens disposed in both sides to the image sensor divided into the two parts.

In addition, an infrared cut filter (IR cut filter) is installed on one side of the image sensor divided into two parts.

In addition, the distance between the ends of the prism or the lens disposed separately to both sides is characterized in that in the range of 55-70mm.

The stereo vision camera using a prism or a lens for three-dimensional image acquisition according to the present invention configured as described above divides one image sensor into two parts and projects two images on the same plane to adjust the coordinate axis of the three-dimensional object. It is easy to match and reduces manufacturing costs by using one image sensor. In addition, it is possible to save space by using the optical path, it is possible to secure the day and night vision through one image sensor.

Hereinafter, with reference to the accompanying drawings will be described specific details and embodiments of the present invention.

First, FIG. 1 illustrates an embodiment of a stereo vision camera using a prism or a lens for acquiring a 3D image according to the present invention, and includes a prism or a lens and one image sensor. Two separate lenses may be further included.

The image sensor 10 is divided into two parts and disposed on one substrate to project two images onto the same plane. Normally, the size of an image sensor has a 4: 3 ratio, and a stereo vision camera that obtains three-dimensional images by dividing an image sensor into two parts to perform the same function as using two image sensors. Without using two image sensors as described above, if one image sensor is divided into two parts and two images are projected on one image sensor, two images are formed on the same horizontal plane. This can eliminate phenomena such as tolerances and aberrations that can occur when using.

In addition, a prism or lens positioned above the image sensor and arranged separately on both sides may be directly bonded to the image sensor divided into two parts. In this case, errors such as tolerances and aberrations that may occur due to movement or shaking can be reduced, so that more accurate three-dimensional images can be obtained.

In addition, the stereo vision camera is equipped with an IR cut filter to prevent the color of light entering the image sensor from being changed by infrared rays during the day. Since the IR cut filter must be disabled at night to ensure visibility through infrared, when using two image sensors, the two image sensors can be independently used to secure day and night vision. Had to operate.

However, when the prism or lens 20 is divided into two parts by dividing one image sensor into two parts according to the present invention, the infrared cut filter may be performed only by operating one image sensor. IR cut filter) enables day and night visibility. That is, during the daytime, the image of the portion of the divided image sensor to which the IR cut filter is attached can be imaged to prevent the deterioration of light caused by infrared rays, and at night, the IR cut filter (IR It is possible to secure the field of view using infrared rays by receiving the image of the part not attached to the cut filter.

The prism or lens 20 is positioned above the image sensor 10 and is separately disposed on both sides to obtain two left and right images on the image sensor. The prism or lens may be provided at the left and right sides, respectively, or may be provided at only one of the left and the right sides. In addition, by adjusting the number and arrangement of the prism or the lens in accordance with the direction of the light incident on the prism or the lens, the optical path may be refracted to project two images on the image sensor. That is, in order to acquire a 3D image, it is necessary to obtain two left and right images. Since the light paths vary according to the direction of viewing the 3D object, the light path is refracted to allow light to enter the image sensor vertically. This can be achieved by adjusting the number and arrangement of prisms or lenses to be positioned. In this case, it is preferable that the distance between the ends of the prism or the lens disposed separately on both sides is in the range of 55-70 mm.

For example, in order to view a three-dimensional object in which the image sensor is placed horizontally on the floor and positioned vertically with the image sensor, the prism or lens disposed above the image sensor and separately disposed on both sides of the image sensor has left and right lights. Two prisms or lenses are required on each of the left and right sides to refract the path twice, and the arrangement thereof is shown in FIG. 1, and one side of the prism or lens should be positioned horizontally with the image sensor. One side perpendicular to one side is bonded to another prism or lens.

In this case, a separate lens may be further provided as necessary. In this case, the separate lenses 11 and 12 may be disposed between the image sensor 10 and the prism or the lens 20 to pass the light passed from the prism. It consists of a left eye lens 11 and a right eye lens 12 to collect light in the center of each part of the image sensor divided into parts.

FIG. 2 is a diagram showing various embodiments showing the number and arrangement of prisms or lenses required to refract an optical path to obtain two left and right images in an image sensor according to a direction of viewing a 3D object. However, all image sensors shown here are located horizontally with the floor.

First, FIG. 2A illustrates the number and arrangement of prisms or lenses required to view a three-dimensional object located perpendicular to the floor.

FIG. 2A shows an image sensor lying horizontally on the floor as shown in FIG. 1, and the optical path needs to be refracted twice in order to see a three-dimensional object lying perpendicular to the floor. Therefore, it is a figure which shows that the prism or two lens was arrange | positioned so that one side surface of each prism or lens may be joined to the left and the right side.

FIG. 2B is a diagram showing the number and arrangement of prisms or lenses required to view a three-dimensional object on the left side of the floor, that is, the left prism or the lens side.

As shown in FIG. 2B, the image sensor is horizontally positioned on the floor, and the optical path must be refracted three times to see a three-dimensional object located on the left side of the floor. Therefore, it is a figure which shows that the prism or three lenses were arrange | positioned so that one side of each prism or lens may be joined to the left and right sides.

FIG. 2C is a diagram showing the number and arrangement of prisms or lenses required for viewing a three-dimensional object on the right side of the floor, that is, the right prism or the lens side.

As shown in Fig. 2c, the image sensor is placed horizontally on the floor, and the optical path must be refracted three times in order to see a three-dimensional object located on the right side of the floor. Contrary to that shown in FIG. 2B, three prisms or lenses are arranged so that one side of each prism or lens is joined.

As described above, the stereo vision camera using the prism or the lens according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited by the embodiments and drawings disclosed herein, and the technical idea is within the scope of protection. Can be applied.

1 is a view showing an embodiment of a stereo vision camera using a prism or a lens for the three-dimensional image acquisition according to the present invention,

Figure 2a shows the number and arrangement of prisms or lenses needed to see a three-dimensional object located perpendicular to the floor,

FIG. 2B shows the number and arrangement of prisms or lenses required to see a three-dimensional object on the left side of the floor, ie the left prism or lens side;

FIG. 2C is a diagram showing the number and arrangement of prisms or lenses required for viewing a three-dimensional object on the right side of the floor, that is, the right prism or the lens side.

<Explanation of symbols on main parts of the drawings>

10: image sensor

11: left eye lens

12: right eye lens

40: prism or lens

Claims (6)

In the stereo vision camera for obtaining a three-dimensional image, An image sensor divided into two parts and disposed on one substrate to project two images onto the same plane; And A stereo vision camera for acquiring 3D images, comprising a prism or a lens positioned above the image sensor and separately disposed on both sides to obtain two images on the image sensor. The method according to claim 1, The stereo vision camera for acquiring the 3D image comprises a left eye positioned between the image sensor and the prism or lens and collecting light from the prism or lens at the center of each part of the image sensor divided into the two parts. Stereo vision camera for the three-dimensional image acquisition, characterized in that it further comprises a lens and right lens. The method according to claim 1 or 2, The stereo vision camera for three-dimensional image acquisition, characterized in that the optical path is refracted by adjusting the number and arrangement of the prism or lens in accordance with the direction of the light incident on the prism or lens. The method according to claim 1 or 2, And attaching the prism or lens separately disposed to both sides to the image sensor divided into the two parts, thereby minimizing tolerance due to movement or shaking. 3. The method according to claim 1 or 2, And an infrared cut filter (IR cut filter) on one side of the image sensor divided into two parts. The method according to claim 1 or 2, The distance between the ends of the prism or lens disposed separately to both sides is in the range of 55-70mm stereo vision camera for 3D image acquisition.

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