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eyes:logics:alignment [2017/06/12 16:51] dhaselb |
eyes:logics:alignment [2017/06/13 10:12] (current) dhaselb |
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| The user has to prepare a set of images for the alignment typically by filtering and normalizing the images and a set of 2D references coming either from a projection logic or a previous classification. The logic will transform all images in polar coordinates and than exhaustively compare all images with all references in all possible rotation and shift combination using the Cross correlation coefficient as means of comparision. The best fitting parameters for every combination of images and references are written in the output. They can be applied using the [[:eyes:logics:applyalignmentparameters]] logic. | The user has to prepare a set of images for the alignment typically by filtering and normalizing the images and a set of 2D references coming either from a projection logic or a previous classification. The logic will transform all images in polar coordinates and than exhaustively compare all images with all references in all possible rotation and shift combination using the Cross correlation coefficient as means of comparision. The best fitting parameters for every combination of images and references are written in the output. They can be applied using the [[:eyes:logics:applyalignmentparameters]] logic. | ||
| - | ===== Example ==== | ||
| - | FIXME | ||
| - | ===== Parameters and IO ===== | + | ===== Parameters and I/O ===== |
| |< 100% 30% >| | |< 100% 30% >| | ||
| ^ Parameters ^ Description ^ | ^ Parameters ^ Description ^ | ||
| - | | Accuracy | angular accuracy of Aliinfo parameter saved. **ONE**: only the best correlating reference in the best fitting orientation is saved. **Low**: Shift, rotation and correlation values are saved for every reference on a FIXME grid. **Medium**: Shift, rotation and correlation values are saved for every reference on a FIXME grid. **HIGH**: Shift, rotation and correlation values are saved for every reference on a FIXME grid. | | + | | Accuracy | angular accuracy of Aliinfo parameter saved. **ONE**: only the best correlating reference in the best fitting orientation is saved. **Low**: Shift, rotation and correlation values are saved for every reference on a 12° grid. **Medium**: Shift, rotation and correlation values are saved for every reference on a 6° grid. **HIGH**: Shift, rotation and correlation values are saved for every reference on a 3° grid. | |
| | Correlation Function | Correlation Function used for comparing two images. **CCF**: Cross correlation Function. **MCF**:Mutual correlation function. | | | Correlation Function | Correlation Function used for comparing two images. **CCF**: Cross correlation Function. **MCF**:Mutual correlation function. | | ||
| | Coarse factor | Coarses images by the given factor prior to alignment to speed up calculations | | | Coarse factor | Coarses images by the given factor prior to alignment to speed up calculations | | ||
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| ^ Output ^ Description ^ | ^ Output ^ Description ^ | ||
| - | | Aliinfo | parameter file containing the shift and rotation coordinates for different combinations of reference and image encoded as pixel values. | | + | | Aliinfo | parameter file containing the shift and rotation coordinates for different combinations of reference and image encoded as pixel values. These parameters can be applied to the original infos using [[eyes:logics:applyalignmentparameters|]] | |