 |
|
|
Difference page (Source Extraction) The Difference page of the Source Extraction configures source list differencing for the Extract Sources command. When extracting from an image set, source list differencing removes sources that pass all the filtering criteria but are not located at the same coordinates in every image. In other words, this processing step produces a final list including only those objects that are found in some images but not in every image of the image set. Only the source coordinates are used as a matching criterion and properties such as intensity or shape are not involved. The Tolerance and Matching Region Properties control the area searched to establish whether there exists a coordinate match at each object location. Depending upon the application, you may or may not need to register the images before using source differencing.
Comparison with MatchingThis operation is the complement of the matching operation, meaning that objects not matched are differenced. However, this method gives a slightly different result than the simple "set complement" because Matching requires an object to be located in every image whereas Differencing identifies objects that are not matched in a subset of the entire image set. Related Topics
Mira Pro x64 User's Guide, Copyright Ⓒ 2023 Mirametrics, Inc. All
Rights Reserved. | ||||||||
