Text this: Characterization and optimization of illumination vector for contouring surface form and feature using DSPI

  _____     _____    _    _     ______     _____  
 / ____||  |  ___|| | || | ||  /_   _//   / ___// 
/ //---`'  | ||__   | || | ||   -| ||-    \___ \\ 
\ \\___    | ||__   | \\_/ ||   _| ||_    /    // 
 \_____||  |_____||  \____//   /_____//  /____//  
  `----`   `-----`    `---`    `-----`  `-----`