title: Remembering original image after patch extraction
body: <p>I apologize if this is too general. I am using the PatchExtractor function in scikit-learn to convert images - an array of size = (n_images x image_height x image_width) - into patches, so the resulting array has size = (n_patches, patch_height, patch_width). </p>
  
  <p>However, with this function I lose track of which patch came from which image, which is important for later in the pipeline. Is there a way to keep track of the image from which a patch came?</p>