There is disclosed apparatus and apparatus for impedance control to provide for controlling the impedance of a communication circuit using an all-digital impedance control circuit wherein one or more control bits are used to tune the output impedance. One or more inputs relating the scene desired to be acquired by the user are used to retrieve camera settings that will reduce the visibility of rain in acquired images. The memory stores the history information on a determined result of past predetermined times corresponding to each interpolation pixel position. Each edge connects, and is directed from, a predecessor node to a successor node. Further, in certain variations, the involute portion is substantially free of Types B-E graphite. Also provided is a method for producing metal particles comprising adding a boron-based reducing agent to a mixed solution containing a rhodium salt and a gold salt to produce the metal particles comprising an at least partial solid solution of rhodium and gold.