1. Information processing equipment comprising: an acquisition unit that acquires a second content with which a first content is interpolated in a spatial or temporal direction or with which gray levels into which the first content is quantized are interpolated; and a synthesis unit that synthesizes the first content and second content so that the first content will be interpolated in the spatial or temporal direction or the gray levels into which the first content is quantized will be interpolated, wherein the acquisition unit acquires the second content that is quantized into reference gray levels different from reference gray levels into which the first content is quantized; and the synthesis unit synthesizes the first content and second content by adopting a mean value between a value of a unit in which the first content is quantized and a value of an associated unit, in which the second content is quantized, as a value of a unit for quantization.