1. A method of providing video data to a subject with an implanted visual stimulator, the implanted visual stimulator associated to an image processor processing video data from an input image, comprising: extracting only an intensity stream from the input image; developing feature maps based on the intensity stream; detecting a plurality of most salient regions of the input image based on the feature maps; selecting one salient region of the most salient regions as a highest saliency region; and providing highest saliency region information to the subject through the implanted visual stimulator.