1. A method comprising: receiving a mono-view image for generating an image depth map of the mono-view image, wherein the mono-view image is part of a plurality of images; tracking global motion of the mono-view image to provide image global motion information, wherein the global motion comprises general movement of the mono-view image which does not amount to a scene change within the motion video segment; generating an image global depth map using the image global motion information; and refining local depth values of the image global depth map using a relative relation of a plurality of color components for pixels of the mono-view image to provide the image depth map of the mono-view image.