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Stereo camera and stereo camera system

A stereoscopic camera and optical system technology, applied in stereoscopic systems, stereophotography, TV system components, etc., can solve problems such as difficulty in miniaturization of devices and obstacles to miniaturization of devices

Inactive Publication Date: 2015-01-07
中央工程株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the accuracy of distance measurement decreases as described above, it may be necessary to extend the baseline length to some extent in order to correct it, which hinders the miniaturization of the device.
Furthermore, in order to suppress and reduce the distortion and image aberration of the imaging optical system, it is necessary to increase the size of the imaging optical system itself, and it may be difficult to reduce the size of the device for this reason.

Method used

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  • Stereo camera and stereo camera system
  • Stereo camera and stereo camera system
  • Stereo camera and stereo camera system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] figure 1 The basic structure of the imaging system 100 of the conventional stereo camera is shown. exist figure 1A mid-stereo camera is a video camera or an electronic still camera that captures a subject using an optical system (lens system) and an imaging element, and includes a left and right imaging system 100a on the left side and a right imaging system 100b on the right side. system. Each imaging system is provided with a movable left lens system 101a, a right lens system 101b along an optical axis, and a left imaging element 102a and a right imaging element 102b that image light passing through these lens systems. Although in figure 1 Both the center left lens system 101a and the right lens system 101b represent a single lens, but the number and type of lenses are not particularly limited. In addition, the left imaging element 102a and the right imaging element 102b in the figure may be CCD sensors or CMOS sensors.

[0081] In addition, in figure 1 Among th...

Embodiment 2

[0095] In Embodiment 1, an example in which the convergence angle θ formed by the optical axes of the left imaging system 1a and the right imaging system 1b is mechanically adjusted in the same manner as in the prior art has been described, but in this embodiment An example will be described in which an effect equivalent to changing the convergence angle θ is electrically obtained by changing the region where an image signal is acquired on the light receiving surfaces of the left imaging element 3a and the right imaging element 3b.

[0096] Figure 4 An imaging system 11 of a stereo camera in this embodiment is shown. The same point as in Embodiment 1 is that the imaging system 11 of the stereo camera in this embodiment has a left imaging system 11a and a right imaging system 11b, and the left imaging system 11a and the right imaging system 11b are respectively equipped with a left lens system 12a and a right lens system. System 12b, left imaging element 13a, and right imagin...

Embodiment 3

[0105] Next, Embodiment 3 of the present invention will be described. As described in Embodiment 2, in the present invention, when the change of the angle of convergence is adopted electrically, it becomes unnecessary to mechanically rotate the left imaging system and the right imaging system. Furthermore, when a wide-angle lens (or a pan-focus lens) having a depth of field is used in the left and right lens systems, movement in the optical axis direction for focal length adjustment of the lens systems can also be omitted. In such a case, the left and right lens systems and the left and right imaging elements can all be integrated. In this embodiment, an integrated imaging system of such a stereo camera will be described.

[0106] exist Figure 5 The integrated camera system 21 in this embodiment is shown in . Figure 5 (a) shows a plan view of the integrated imaging system 21, Figure 5 (b) shows a perspective view. exist Figure 5 Among them, the left lens system 22 a ...

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Abstract

The present invention provides a technique that is capable of improving either the precision of a distance measurement made using a stereo camera or the quality of a three-dimensional image captured using the stereo camera, and is capable of reducing the size of a stereo camera device. The stereo camera is equipped with left and right imaging systems (1a, 1b) having left and right optical systems (2a, 2b) and left and right imaging elements (3a, 3b), and either derives the distance to an imaging target or generates a three-dimensional image that includes the imaging target on the basis of an image signal acquired by imaging the imaging target by means of the left and right imaging systems (1a, 1b). The light receiving surface of the left and right imaging elements (3a, 3b) in the left and right imaging systems (1a, 1b) is caused to bend in the direction of the optical axis so as to correct an aberration in the left and right optical systems (2a, 2b).

Description

technical field [0001] The present invention relates to a stereo camera that processes parallax of a plurality of images acquired from a plurality of cameras to calculate a distance to a subject in front or generate a stereo image. Background technique [0002] Conventionally, there is known a stereo camera in which the optical axes of two cameras are arranged at a predetermined distance (baseline length), and the parallax of two images imported from the two cameras is processed to derive a subject to be photographed in front. body distance. This stereo camera is mounted on a vehicle or the like as a distance measuring device for measuring a distance to a subject, and is applied to an anti-shock system that issues a distance warning or an obstacle warning. [0003] In addition, in recent years, display devices that display stereoscopic images on thin televisions and the like have become widespread. Furthermore, among electronic information devices using electronic imaging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G02B7/28G02B7/30G03B35/20G03B37/00H04N5/369H04N13/02H04N13/239H04N13/243
CPCH04N13/0239G03B37/04H04N13/0296G03B35/08G02B23/24H04N2013/0081G06T2207/10012G06T2207/10068G06T2207/30232G06T2207/30252G08B13/19641G08B13/19647B60R2300/107A61B1/00193H04N7/188G06T7/593H04N13/243H04N13/296H04N13/239H04N23/555H04N23/54H04N25/61B60R1/31H04N13/204G01B11/14
Inventor 长谷川隆义田中胜久角田信
Owner 中央工程株式会社