1. An image processing apparatus, comprising: at least one circuit configured to: perform a process of determining a candidate color region including at least a partial region in an image using color information of an input image signal; prompt a user to select an extraction color region in case a plurality of color regions are determined as the candidate color region; and perform image processing on at least one of the extraction color region of the input image signal and the remaining region of the input image signal excluding the extraction color region, to obtain an output image signal.