test_advanced_image_processing: Added a test for preprocess_data from advanced_image_processing. This partially addresses #101.
test_advanced_image_processing: Added a test for preprocess_data from advanced_image_processing. This partially addresses #101.
test_advanced_image_processing: Added a test for preprocess_data from advanced_image_processing. This partially addresses #101.
test_advanced_image_processing: Added a test for preprocess_data from advanced_image_processing. This fixes #101.