Created
September 4, 2024 16:44
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QuPath-Create concentric rings around an annotation
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| /** | |
| * QuPath script to create concentric rings around an annotation. | |
| */ | |
| // Number of rings to create | |
| int nRings = 5 | |
| // Define distance in µm, then convert (or just go straight to defining in pixels) | |
| double distanceMicrons = 100 | |
| double distancePixels = distanceMicrons / getCurrentServer().getPixelCalibration().getAveragedPixelSizeMicrons() | |
| def currentROI = getSelectedROI() | |
| def mergedROI = null | |
| def newAnnotations = [] | |
| for (int i = 0; i < nRings; i++) { | |
| // Expand the ROI | |
| def nextROI = RoiTools.buffer(currentROI, distancePixels) | |
| // Accumulate all the ROIs so that we can subtract them together | |
| mergedROI = mergedROI == null ? currentROI : RoiTools.union(mergedROI, currentROI) | |
| // Subtract the accumulated ROIs to get an outer ring | |
| nextROI = RoiTools.subtract(nextROI, mergedROI) | |
| // Create an annotation and add it to a list | |
| newAnnotations << PathObjects.createAnnotationObject(nextROI) | |
| // Prepare for the next iteration | |
| currentROI = nextROI | |
| } | |
| // Add all our annotations | |
| addObjects(newAnnotations) |
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