1. A computerized method for document processing, the method comprising: obtaining one or more counts of keypoints of a first document and one or more counts of remarkable characteristics of a second document; comparing at least one of the one or more counts of keypoints of the first document and at least one of one or more corresponding counts of remarkable characteristics of the second document, wherein the comparing step further comprises selecting a cell of a plurality of cells of the first document as a base cell and determining a value of a difference between a keypoint count of the base cell associated with the first document and a corresponding keypoint count of a base cell of the second document to determine a base cell similarity score; and determining a document similarity score between the first and second document.