To determine if a pixel exhibits artifacts, statistics are generated for the pixel and its neighbors. These programming libraries may be operated by other programs, such as task-specific user interfaces, through which a user may utilize the programming library without having to understand its structure and functions. The spindle attachment interface is configured to be a detachable connection that allows the spindle to be selectively attached and detached from the wheel assembly. The first unit can be an arbitrary ADC unit and the second unit is a natural unit of physical measurement, such as volts, amperes, degree Centigrade. The intermediate layer is provided on the foundation layer and includes a layer including AlN. The head has an end part shaped as a truncated sphere possessing a recess formed by two planes arranged at an angle of 90\xb0 relative to each other and passing through the truncated sphere center and two points belonging to two diagonally arranged plate ribs.