Polishing process is one of the most critical manufacturing processes during a metal part production because it determines the final quality of the product.Free-form surface polishing is a handmade process with lots of rejected parts, scrap generation and time and energy consumption.Two different research lines are being developed: prediction model

Feature extraction plays a key role in hyperspectral images classification.Using unlabeled samples, often unlimitedly available, unsupervised and semisupervised feature extraction methods show better performance when limited number of training samples exists.This paper illustrates the importance Hair Care of selecting appropriate unlabeled samples