A visual processing device inhibits artifacts, even when a special image is input. The visual processing device includes a spatial processing portion extracting surrounding image information from an input image signal, and a special image detection portion outputting a special image effect adjustment signal according to a degree of a statistical bias of the input image signal. The visual processing device also includes a continuous changing portion outputting an effect adjustment signal in which the special image effect adjustment signal is continuously changed between frames, an effect adjustment portion outputting a synthesized signal in which the effect of the visual processing differs depending on the effect adjustment signal, and a visual processing portion outputting a processed signal obtained by visually processing the image signal based on the image signal and the synthesized signal.