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jvs:fscan:manual:chapter2:expression:dilate [2012/06/04 21:36] voyvodic |
jvs:fscan:manual:chapter2:expression:dilate [2023/02/23 18:43] (current) |
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* MASKBITS - voxel data values to consider for comparing with VAL (DATABITS is inverse of MASKBITS) | * MASKBITS - voxel data values to consider for comparing with VAL (DATABITS is inverse of MASKBITS) | ||
* NEWVAL - bit-value to turn on when adding (dilating) a voxel\\ | * NEWVAL - bit-value to turn on when adding (dilating) a voxel\\ | ||
- | * If NEWVAL is negative and MASKBITS is zero, then the input data voxel value will be used when dilating into neighboring | + | * If NEWVAL is negative and MASKBITS is zero, then neighboring |
* FLAG: | * FLAG: | ||
* 0 - (default) | * 0 - (default) | ||
- | | + | * 2 - Erode/dilate in 2-D plane only |
- | | + | * 4 - Stop on dark edge (voxel darker than (100-VAL)% of inside neighbors (Needs MASKBITS set) |
- | * 4 - Stop on dark edge (voxel darker than (100-VAL1)% of inside neighbors (Needs MASKBITS set) | + | * 8 - Stop on bright edge (brighter than (100+VAL)% of inside neighbors |
- | * 8 - Stop on bright edge (brighter than (100+VAL1)% of inside neighbors | + | * 16 - Dilate all non-zero values except VAL (useful for filling in around VAL areas) |
+ | * NMATCH - number of adjacent voxels matching criterion needed for dilation (default=1) | ||
+ | * NNEIGHBORS - number of neighboring voxels to consider (default=26 if 3D, 8 if 2D) | ||
If MASKBITS is non-zero, it is used to mask both the input data values and NEWVAL; only those data bits are considered during comparisons and only the NEWVAL bits are changed during dilation. | If MASKBITS is non-zero, it is used to mask both the input data values and NEWVAL; only those data bits are considered during comparisons and only the NEWVAL bits are changed during dilation. |