1. A method for assisting a user to capture images, the method comprising: extracting, by an image capturing device, one or more features from an image being focused, wherein the image is displayed on a display unit of the image capturing device; extracting, by the image capturing device, one or more line segments in the image based on vectorization of the image; determining, by the image capturing device, a relation between the one or more features and the one or more line segments extracted from the image; and providing, by the image capturing device, assistance for capturing the image based on the relation.