Patent Document ID: 9349185
Application ID: 13597876
Patent Status: 1

Claim One:
1. An image processing device comprising: a processor comprising hardware, the processor implementing: a non-target region detecting unit that detects a region that is not to be examined as a non-target region from an image; a pixel-of-interest region setting unit that sets a pixel-of-interest region in a predetermined area including a pixel-of-interest position in the image; a surrounding region determining unit that determines a surrounding region, which is an area for acquiring information for use in forming a reference plane with respect to the pixel-of-interest position, based on a positional relationship between the non-target region and the pixel-of-interest position, wherein the positional relationship further includes a boundary passing through the non-target region and the pixel-of-interest position, the boundary defining the area for acquiring information to include the pixel-of-interest position and not exceed the non-target region in the pixel-of-interest region as the surrounding region; a reference plane forming unit that forms the reference plane based on the information in the surrounding region; and an outlier pixel detecting unit that detects an outlier pixel having a pixel value numerically distant from circumferential values based on a difference between corresponding quantities of the reference plane at each pixel position and of the original image.