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Image pickup and method of detecting road status

A technology for a camera device and a camera unit, which is applied in the directions of image communication, character and pattern recognition, and optical filters for photography, can solve problems such as inability to install, and achieve the effects of easy installation and thinning of the device.

Inactive Publication Date: 2009-12-23
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this road surface wetness detection device is mounted on a car, it is desirable to hide it in the interior mirror or install it on the back of the interior mirror. However, if the road surface wetness detection device becomes larger, there is a disadvantage that such a device cannot be installed.

Method used

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  • Image pickup and method of detecting road status
  • Image pickup and method of detecting road status
  • Image pickup and method of detecting road status

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Embodiment Construction

[0050] Other objects and features of the present invention will become clear from the description of the following embodiments with reference to the accompanying drawings.

[0051] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the embodiments described below, since they are preferred embodiments of the present invention, technically there are various restrictions on constituent elements, types, combinations, shapes, relative installations, etc., but these are only examples, and the present invention It is not limited to this.

[0052] figure 1 and figure 2 is a schematic configuration showing the optical system of the first imaging device of the present invention, wherein, figure 1 is an exploded perspective view, figure 2 is a cross-sectional view. As shown in the figure, the optical system 1 of the first imaging device 100 is used for imaging the state of the road surface. layer format...

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Abstract

The invention relates to an image pickup and a method of detecting the road status. The image pickup (100) includes a lens array (2) having two lenses (21a,21b); a filter (4) including at least two polarizer areas (41a,41b) with respective perpendicular axes which are separated according to beams of light which have passed through the respective lenses (21a,21b) of the lens array (2); an image pickup unit (6) including multiple image pickup areas (62a,62b) that shoots images of an object by receiving the beams of light which have passed through the respective corresponding polarizer areas (41a,41b) of the filter (4). The image pickup (100) shoots the vertical polarized light image and the horizontal polarized light image and judges the road status based on the polarized light ratio of theshot vertical polarized light image and the horizontal polarized light image, thus realizing the apparatus miniaturization. The image pickup is easily installed in the vehicles and detects the road status even in running.

Description

technical field [0001] The present invention relates to an imaging device and a road surface state discrimination method for detecting, for example, the dryness and wetness state of the road surface, traffic lines and signs, road surface defects, etc. Background technique [0002] In order to discriminate the wetness of the road surface, for example, a road surface wetness detection device is disclosed in Patent Document 1, a linear polarizer is arranged on the entire surface of the imaging device facing the road surface at a Brewster angle of water, When photographing the road surface, the linear polarizing mirror is rotated by the motor, and the polarization plane is switched to the vertical direction and the horizontal direction for photography, and the vertically polarized light image and the horizontally polarized light image are obtained, and the polarization of the vertically polarized light image and the horizontally polarized light image is calculated The light rati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G03B11/04G01N21/21G06V10/147
CPCG02B5/3041G01N2201/0642G01N21/21G02B3/0006B82Y20/00G02B6/1225G03B11/00G06V20/56G06V10/147
Inventor 平井秀明
Owner RICOH KK
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