Abstract: Methods for assessing the result of a surface treatment carried out on a workpiece by particle blasting are disclosed. It is generally common to known automatic methods that they directly determine the covered portion of the surface. Proceeding from the usual definition of the usual 98% degree of coverage as “completely blasted” results in an error in the determination of the corresponding area of 1% to a distortion of the measurement result by 0.98%. In the disclosed method measuring points are identified as not hit by a particle of the particle beam when both a detected surface level is above a level located about a predetermined height threshold value lower than a target level, and a detected gradient falls below a predetermined gradient threshold value.

Abstract: A computer-implemented method for providing a computer game such as, for example, a social network game includes steps of hosting the game at a server, receiving a request from a player to play the game, enabling game play, requesting a donation from the player to continue play or to enable access to a game feature, and continuing game play or enabling access to the game feature only if the donation is received. A donation request screen may be displayed at the transition from one completed game level to a successive game level, when the game is over, or at any other time during game play. Multiple donation amounts may be specified on the donation request screen, each donation amount providing a different number of game credits. This method enables donations to be collected for a charitable entity while playing computer games. The method also raises social awareness through game play.