Quick QuPath script to try to read all tiles in an image, so that failing tiles can be identified

QuPath-Check failed tiles.groovy

/**
 * Quick script to try to read all tiles in an image, so that failing tiles can be identified.
 * (Not very thoroughly tested)
 */

var server = getCurrentServer()
var tiles = server.getTileRequestManager().getAllTileRequests()
boolean doParallel = false // Set to true if speed is very important (but may complicate interpretation if tiles are slow to read & you've lots of processors)

var failed = []
if (doParallel) {
    failed = tiles.parallelStream().filter(t -> !checkRead(server, t)).toList()
} else {
    for (var tile : tiles) {
        if (!checkRead(server, tile))
            failed.add(tile)
    }
}

println "${failed.size()} failed tile(s)"
failed.each {
    println it
}


def checkRead(server, tile) {
    try {
        var img = server.readRegion(tile.getRegionRequest())
        return img != null
    } catch (Exception e) {
        getLogger().error(e.getMessage(), e)
        return false
    }
}