Inspection system, inspection method, program, and storage medium

An inspection system comprising:

• an acquisitor configured to acquire an image representing a surface of an object;
• a determiner configured to perform color determination processing for determining a color of the surface of the object based on a plurality of conditions of reflection, the plurality of conditions of reflection being obtained from the image representing the surface of the object as acquired by the acquisitor, and having a specular reflection component and a diffuse reflection component at respectively different ratios on the surface of the object, wherein:
• the acquisitor is configured to acquire a plurality of series images by capturing the images of the surface of the object from multiple different positions,
• the determiner is configured to perform texture determination processing for determining a texture of the surface of the object based on a variation in luminance information between the plurality of series images,
• each of the plurality of series images includes a plurality of pixels,
• the luminance information includes a difference between luminance values obtained from the plurality of pixels, and,
• the difference is calculated between a luminance value of a first region including one or more of the plurality of pixels and a luminance value of a second region adjacent to the first region and including another one or more of the plurality of pixels.

An inspection method comprising the steps of:

• acquiring an image representing a surface of an object;
• and
• performing color determination processing for determining a color of the surface of the object based on a plurality of conditions of reflection, the plurality of conditions of reflection being obtained from the image representing the surface of the object, and having a specular reflection component and a diffuse reflection component at respectively different ratios on the surface of the object, wherein:
• the step of acquiring the image includes acquiring the image representing the surface of the object from an image capturing system, the image capturing system being configured to generate the image representing the surface of the object by capturing the image of the surface of the object,
• the step of performing the color determination processing includes performing, based on the image representing the surface of the object as acquired by the step of acquiring the image, painting determination processing for determining a painting condition on the surface of the object, and thereby control the image capturing system based on a result of the painting determination processing,
• the image capturing system includes a plurality of cameras,
• the step of performing the color determination processing includes controlling, based on a result of the painting determination processing, operating conditions of the plurality of cameras of the image capturing system,
• the plurality of cameras include:
• one or more first cameras, each being configured to generate an image representing an associated part of the surface of the object;
• and a second camera configured to generate an image representing a whole of the surface of the object, and
• the step of performing the color determination processing includes controlling, based on a result of the painting determination processing, an operating condition of the one or more first cameras.

An inspection method comprising the steps of:

• acquiring an image representing a surface of an object;
• and
• performing color determination processing for determining a color of the surface of the object based on a plurality of conditions of reflection, the plurality of conditions of reflection being obtained from the image representing the surface of the object, and having a specular reflection component and a diffuse reflection component at respectively different ratios on the surface of the object, wherein:
• the step of acquiring the image includes acquiring a plurality of series images by capturing the images of the surface of the object from multiple different positions,
• the step of performing the color determination processing includes performing texture determination processing for determining a texture of the surface of the object based on a variation in luminance information between the plurality of series images,
• each of the plurality of series images includes a plurality of pixels,
• the luminance information includes a difference between luminance values obtained from the plurality of pixels, and
• the difference is calculated between a luminance value of a first region including one or more of the plurality of pixels and a luminance value of a second region adjacent to the first region and including another one or more of the plurality of pixels.