This paper presents a comparative analysis of a new unsupervised PCA-based technique for steel plates texture segmentation towards defect detection. The proposed scheme called Variance Based Component Analysis or VBCA employs PCA for feature extraction, applies a feature reduction algorithm based on variance of eigenpictures and classifies the pixels as defective and normal. While the classic P...

in this study, the application of gray relational analysis (gra) and taguchi method in multi-criteria process parameters selection of turning operation has been investigated. the process responses under study are material removal rate (mrr) and surface roughness (sr); in turn, the input parameters include cutting speed, feed rate, depth of cut and nose radius of the cutting tool. the proposed a...

We consider a quadcopter operating in turbulent windy environment. The environment may be imposed on by structures, landscapes, terrains and most importantly the unique physical phenomena lower atmosphere. Turbulence can negatively impact quadcopter's performance operations. Modeling turbulence as stochastic random input, we investigate control designs that reduce effects motion. In particular,...