code: public void submitImageVectorizationTask(String imageFolder, String imageName) {
  		Callable<ImageVectorizationResult> call = new ImageVectorization(imageFolder, imageName,
  				targetVectorLength, maxImageSizeInPixels);
  		pool.submit(call);
  		numPendingTasks++;
  	}
docs: Submits a new image vectorization task for an image that is stored in the disk and has not yet been
  read into a BufferedImage object.
  
  @param imageFolder
  The folder where the image resides.
  @param imageName
  The name of the image.