发明名称 |
Image processing apparatus, image processing method and computer-readable recording device |
摘要 |
An image processing apparatus includes: a candidate point extraction unit which extracts, from an image, candidate points which are candidates for points constituting a circular region that represents a bubble; and a circular-region detecting unit which detects a circular region in the image on the basis of information belonging to the candidate points. |
申请公布号 |
US8798344(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US201113323910 |
申请日期 |
2011.12.13 |
申请人 |
Olympus Corporation |
发明人 |
Kitamura Makoto;Kanda Yamato;Kono Takashi;Hirota Masashi |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
代理机构 |
Scully, Scott, Murphy & Presser, P.C. |
代理人 |
Scully, Scott, Murphy & Presser, P.C. |
主权项 |
1. an image processing apparatus comprising:
a processor; and a memory storing computer-readable instructions that, when executed by the processor, implement: a candidate point extraction unit which extracts, from an image, candidate points which are candidates for points constituting a circular region that represents a bubble; and a circular-region detecting unit which detects a circular region in the image on the basis of information belonging to the candidate points; wherein the circular-region detecting unit comprises: an estimation-use candidate point extraction unit which extracts, from among candidate points extracted by the candidate point extraction unit, a plurality of estimation-use candidate points which are used for estimating a circular region; a circular-shape estimation unit which estimates a circular region on the basis of the plurality of estimation-use candidate points extracted by the estimation-use candidate point extraction unit; an evaluation value calculation unit which calculates an evaluation value used for determining whether the estimated circular region actually exists in the image; and a determination unit which determines whether the circular region actually exists in the image based on the evaluation value; wherein the candidate point extracting comprises:
calculating gradient magnitudes of a plurality of pixels contained in the image. |
地址 |
Tokyo JP |