Characteristic point coordination system, characteristic point coordination method, and recording medium

A characteristic point associating method comprising:

• receiving, by a processor from an input interface of the processor, a plurality of characteristic point groups to be compared,
• obtaining, by the processor, characteristic point pairs that are selected from the characteristic point groups to be compared,
• creating, by the processor, a plurality of characteristic point pair sets by grouping the characteristic point pairs that are close to one another using local conversion parameters of the respective point pairs;
• selecting, by the processor, a characteristic point pair set out of the created plurality of characteristic point pair sets based on the local conversion parameters;
• and
• determining, by the processor, out of characteristic point pairs contained in the selected characteristic point pair set, the pair data of the characteristic points to be associated with each other as correct corresponding characteristic points data so as to be output to an output interface of the processor.

A non-transitory computer-readable recording medium having recorded thereon a characteristic point associating program for an information processing device including one or more processors and a memory, wherein the one or more processors:

• receive a plurality of characteristic point groups from the memory;
• output a pair of characteristic points to be associated with each other as correct corresponding characteristic points;
• receive the plurality of characteristic point groups to be compared;
• obtain characteristic point pairs that are selected from the characteristic points to be compared;
• create a plurality of characteristic point pair sets by grouping the characteristic point pairs that are close to one another by the use of local conversion parameters of characteristic point pairs grouped;
• select a characteristic point pair set out of the plurality of created characteristic point pair sets based on the local conversation parameters;
• and
• determine out of characteristic point pairs contained in the selected characteristic point pair set, the pair of characteristic points to be associated with each other as correct corresponding characteristic points so as to be output.

A method comprising:

• receiving, at a processor input of a processor, a candidate characteristic point group;
• receiving, at the processor input of the processor, a comparison characteristic point group;
• obtaining, by the processor, a plurality of characteristic point pairs that are each selected by selecting one characteristic point from the candidate characteristic point group and one characteristic point from the comparison characteristic point group;
• creating a plurality of characteristic point pair sets by:
• calculating a local conversion parameter between a candidate pair of the plurality of characteristic point pairs;
• and
• placing the candidate pair into a point pair set of a plurality of point pair sets based on the local conversion parameter, wherein the point pair set of the plurality of point pair sets is a new point pair set if the local conversion parameter of the candidate pair is not close to a local conversion parameter of any of the point pair sets in the plurality of point pair sets;
• selecting a point pair set from the plurality of point pair sets based on the point pairs within the plurality of point pair sets;
• determining, out of point pairs contained in the selected point pair set, the point pair data to be treated as correct corresponding characteristic point data;
• and
• outputting the correct corresponding characteristic point data using an output interface of the processor.

A characteristic point associating system, comprising:

• one or more program memories for storing program instructions;
• a characteristic point memory for storing characteristic point groups;
• and
• one or more processors for executing program instructions from the one or more program memories, wherein the program instructions configure the one or more processors to:
• receive, at a processor input of the one or more processors, a candidate characteristic point group;
• receive, at the processor input from the characteristic point memory, a comparison characteristic point group;
• obtain a plurality of characteristic point pairs that are each selected by selecting one characteristic point from the candidate characteristic point group and one characteristic point from the comparison characteristic point group;
• create a plurality of characteristic point pair sets by:
• calculating a local conversion parameter between a candidate pair of the plurality of characteristic point pairs;
• placing the candidate pair into a point pair set of a plurality of point pair sets based on the local conversion parameter, wherein the point pair set of the plurality of point pair sets is a new point pair set if the local conversion parameter of the candidate pair is not close to a local conversion parameter of any of the point pair sets in the plurality of point pair sets;
• select a point pair set from the plurality of point pair sets based on the point pairs within the plurality of point pair sets;
• determine, out of point pairs contained in the selected point pair set, the point pair data to be treated as correct corresponding characteristic point data;
• and
• output the correct corresponding characteristic point data using an output interface of the processor.