发明名称 |
Image processing apparatus, image processing method, and non-transitory computer readable medium |
摘要 |
An image processing apparatus includes a feature point extraction unit that extracts feature points which are pixels located at the corner of a region within an image and directions indicating a positional relationship of the feature points in the region, a selection unit that selects the feature point and a set of feature points corresponding to the feature point, based on a color of the feature point, a position of the feature point, and a direction in the feature point, a representative point determination unit that determines a representative point representing a region, based on the set of feature points, a vector calculation unit that calculates a vector composed of two representative points, on the basis of the representative points, and a screen line number and angle extraction unit that extracts the number of screen lines and an angle used in the image, based on a distribution of the vectors. |
申请公布号 |
US8768052(B2) |
申请公布日期 |
2014.07.01 |
申请号 |
US201213405875 |
申请日期 |
2012.02.27 |
申请人 |
Fuji Xerox Co., Ltd. |
发明人 |
Kawano Hiroyuki |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
代理机构 |
Oliff PLC |
代理人 |
Oliff PLC |
主权项 |
1. An image processing apparatus comprising:
a feature point extraction unit that extracts feature points which are pixels located at the corner of a region within an image and directions indicating a positional relationship of the feature points in the region; a selection unit that selects the feature point and a set of feature points corresponding to the feature point, on the basis of a color of the feature point extracted by the feature point extraction unit, a position of the feature point, and a direction in the feature point; a representative point determination unit that determines a representative point representing a region, on the basis of the set of feature points selected by the selection unit; a vector calculation unit that calculates a vector composed of two representative points, on the basis of the representative points determined by the representative point determination unit; and a screen line number and angle extraction unit that extracts the number of screen lines and an angle used in the image, on the basis of a distribution of the vectors calculated by the vector calculation unit. |
地址 |
Tokyo JP |