catmaid-scale.bsh

w = 1987;
h = 460 * 2;
d = 1441;

tileWidth = 256;
tileHeight = 256;

jpegQuality = 85;

emptyImage = new ImagePlus("",new ByteProcessor(tileWidth,tileHeight));

path = "/home/saalfeld/tmp/catmaid/export-test/fib/aligned/xz/";

ImagePlus open(path)
{
	file = new File(path);
	if (file.exists())
		return new ImagePlus(path);
	else
		return emptyImage;
}

for (int l = 0; l < d; ++l) {
	dirPath = path + l + "/";
	IJ.log( dirPath );
	for (
		int w1 = (int)Math.ceil(w / 2.0), h1 = (int)Math.ceil(h / 2.0), s = 1;
		w1 > tileWidth && h1 > tileHeight;
		w1 = (int)Math.ceil(w1 / 2.0), h1 = (int)Math.ceil(h1 / 2.0), ++s) {
		IJ.log(w1 + " " + h1);
		for (y = 0; y < h1; y += tileHeight) {
			yt = y / tileHeight;
			for (x = 0; x < w1; x += tileWidth) {
				xt = x / tileWidth;
				imp1 = open(
					dirPath +
					(2 * yt) + "_" +
					(2 * xt) + "_" +
					(s - 1) + ".jpg");
				imp2 = open(
					dirPath +
					(2 * yt) + "_" +
					(2 * xt + 1) + "_" +
					(s - 1) + ".jpg");
				imp3 = open(
					dirPath +
					(2 * yt + 1) + "_" +
					(2 * xt) + "_" +
					(s - 1) + ".jpg");
				imp4 = open(
					dirPath +
					(2 * yt + 1) + "_" +
					(2 * xt + 1) + "_" +
					(s - 1) + ".jpg");

				ip4 = new ByteProcessor(tileWidth * 2, tileHeight * 2);
				ip4.copyBits(imp1.getProcessor(), 0, 0, Blitter.COPY);
				ip4.copyBits(imp2.getProcessor(), tileWidth, 0, Blitter.COPY);
				ip4.copyBits(imp3.getProcessor(), 0, tileHeight, Blitter.COPY);
				ip4.copyBits(imp4.getProcessor(), tileWidth, tileHeight, Blitter.COPY);

				ip = mpicbg.trakem2.util.Downsampler.downsampleImageProcessor(ip4);
				impTile = new ImagePlus("", ip);

				fileSaver = new FileSaver(impTile);
				fileSaver.setJpegQuality(jpegQuality);
				fileSaver.saveAsJpeg(dirPath + yt + "_" + xt + "_" + s + ".jpg");
			}
		}
	}
}