English

Abstract

In the past few years many offices maintained their documents in printed form, as this the volume of printed documents were increased they suffered from a problems like space to keep them and searching of particular document. Due to this reason and due to advances in information technology made the offices to keep their documents in image form, but even though they faced a problem of retrieving a particular document. In the area of document image processing and in the analysis and retrieval of document images, recognition of graph and its detection are basic research problems. So, many approaches came into field to retrieve documents among them we are focusing on logo approach. The most of government offices and companies represent themselves by their own and unique logo, their document with logos may allow the user to easily identify the logo and to decide to which company it belongs to, by this it gives declaration of document’s source and ownership .This paper provides techniques and methods evolved for logo detection, recognition, extraction and logo based document retrieval.