JP2012043004A5

JP2012043004A5 -

Info

Publication number: JP2012043004A5
Application number: JP2010180995A
Authority: JP
Filing date: 2010-08-12
Publication date: 2013-09-19
Anticipated expiration: 2030-08-12

Description

上記の課題を解決するために、本発明の第１の観点に係る光源方向特定装置は、
両端開口の孔を有し、光源から出射された光が一端の開口から前記孔の内部に入射し、入射した光によって、前記孔の内壁における、前記一端の開口の周囲が照らされる光導入部と、
前記光導入部の他端の開口側に配置され、前記光導入部の前記一端の開口及び前記一端の開口に繋がる前記内壁を撮像する撮像装置と、
前記撮像装置が撮像した第１の画像に基づいて、前記第１の画像の中の前記内壁における所定の基準以上の明るさを有する明領域を特定し、特定した前記明領域に基づいて前記光源の方向を特定する光源方向特定部と、
を備え、
前記光源方向特定部は、前記明領域における、前記一端の開口の中心から最も離れた位置にある点を特定し、特定した前記点の位置に基づいて前記光源の方向を特定する。 In order to solve the above-described problem, a light source direction identification device according to the first aspect of the present invention includes:
A light introducing portion having a hole at both ends and light emitted from a light source is incident on the inside of the hole from an opening at one end, and the incident light illuminates the periphery of the opening at the one end on the inner wall of the hole When,
An imaging device that is disposed on the opening side of the other end of the light introducing portion and that images the inner wall connected to the opening of the one end and the opening of the one end of the light introducing portion;
Based on the first image captured by the imaging device, a bright area having a brightness equal to or higher than a predetermined reference in the inner wall in the first image is identified, and the light source is based on the identified bright area. A light source direction specifying part for specifying the direction of
Equipped with a,
The light source direction specifying unit specifies a point at a position farthest from the center of the opening at the one end in the bright region, and specifies the direction of the light source based on the specified position of the point.

また、本発明の第２の観点に係る光源方向特定プログラムは、
両端開口の孔を有し、光源から出射された光が一端の開口から前記孔の内部に入射し、入射した光によって、前記孔の内壁における、前記一端の開口の周囲が照らされる光導入部と、
前記光導入部の他端の開口側に配置され、前記光導入部の前記一端の開口及び前記一端の開口に繋がる前記内壁を撮像する撮像装置と、を備える装置を制御するコンピュータに、
前記撮像装置が撮像した第１の画像に基づいて、前記第１の画像の中の前記内壁における所定の基準以上の明るさを有する明領域を特定し、特定した前記明領域に基づいて前記光源の方向を特定する光源方向特定ステップ、
を行なわせ、
前記光源方向特定ステップは、前記明領域における、前記一端の開口の中心から最も離れた位置にある点を特定し、特定した前記点の位置に基づいて前記光源の方向を特定する。 Moreover, the light source direction specifying program according to the second aspect of the present invention includes:
A light introducing portion having a hole at both ends and light emitted from a light source is incident on the inside of the hole from an opening at one end, and the incident light illuminates the periphery of the opening at the one end on the inner wall of the hole When,
A computer that controls an apparatus including: an imaging device that is disposed on an opening side of the other end of the light introducing unit and that images the inner wall connected to the opening of the one end of the light introducing unit and the opening of the one end;
Based on the first image captured by the imaging device, a bright area having a brightness equal to or higher than a predetermined reference in the inner wall in the first image is identified, and the light source is based on the identified bright area. A light source direction specifying step for specifying the direction of
It was carried out,
The light source direction specifying step specifies a point at a position farthest from the center of the opening at the one end in the bright region, and specifies the direction of the light source based on the position of the specified point.

Claims

A light introducing portion having a hole at both ends and light emitted from a light source is incident on the inside of the hole from an opening at one end, and the incident light illuminates the periphery of the opening at the one end on the inner wall of the hole When,
An imaging device that is disposed on the opening side of the other end of the light introducing portion and that images the inner wall connected to the opening of the one end and the opening of the one end of the light introducing portion;
Based on the first image captured by the imaging device, a bright area having a brightness equal to or higher than a predetermined reference in the inner wall in the first image is identified, and the light source is based on the identified bright area. A light source direction specifying part for specifying the direction of
Equipped with a,
The light source direction specifying unit specifies a point in the bright region that is farthest from the center of the opening at the one end, and specifies the direction of the light source based on the specified position of the point. The light source direction specifying device.

The light source direction specifying unit specifies the illuminance and / or color of light that illuminates the inside of the bright region based on the first image.
The light source direction specifying device according to claim 1 .

The light source direction specifying unit specifies the illuminance and / or color of light that illuminates outside the bright region based on the first image.
The light source direction specifying device according to claim 1 .

The light source direction specifying unit is
Based on the first image, the illuminance of light illuminating the bright area is identified,
Based on the first image, identify the illuminance of light that illuminates outside the bright area,
Based on the illuminance of the light inside and outside the identified bright area, the illuminance ratio between the direct light source and the indirect light source is identified.
The light source direction specifying device according to claim 1 .

An optical processing unit that acquires a second image and performs image processing that is specified by the light source specifying unit and adds a shadow and / or gloss to the acquired second image according to at least the direction of the light source;
Light source direction identification device according to any one of claims 1 to 4, characterized by further comprising a.

A light introducing portion having a hole at both ends and light emitted from a light source is incident on the inside of the hole from an opening at one end, and the incident light illuminates the periphery of the opening at the one end on the inner wall of the hole When,
A computer that controls an apparatus including: an imaging device that is disposed on an opening side of the other end of the light introducing unit and that images the inner wall connected to the opening of the one end and the opening of the one end of the light introducing unit
Based on the first image captured by the imaging device, a bright area having a brightness equal to or higher than a predetermined reference in the inner wall in the first image is identified, and the light source is based on the identified bright area. A light source direction specifying step for specifying the direction of
It was carried out,
The light source direction specifying step specifies a point that is farthest from the center of the opening at the one end in the bright region, and specifies the direction of the light source based on the position of the specified point. A light source direction identification program.