System and method for text localization in images

US10496894B2 · kind B2 · utility

Assignee

• Tata Consultancy Services Limited · IN

Inventors

• Santosh Kumar Jami · Hyderabad, IN
• Srinivasa Rao Chalamala · Hyderabad, IN
• Krishna Rao Kakkirala · Polavaram, IN
• Balakrishna Gudla · Hyderabad, IN
• Arun Kumar Jindal · Pune, IN
• Bala Mallikarjunarao Garlapati · Hyderabad, IN
• Sachin Premsukh Lodha · Jamkhed, IN
• Ajeet Singh · Saratoga, US
• Vijayanand Mahadeo Banahatti · Pune, IN

Key dates

• Filing date: Jan 18, 2018
• Grant date: Dec 3, 2019
• Expiry date: Feb 10, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N1/00331
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

System and method for text localization in images are disclosed. In an embodiment, a line and graphic eliminated image is received. Further, horizontal projection is performed on rows of the image to obtain a first flag vector, the flag vector indicates whether there is text in each row. Furthermore, a number of run-lengths of consecutive 1's and 0's is computed in the first flag vector. Moreover, text lines is extracted in the image based on the computed number of run-lengths of consecutive 1's and 0's in the first flag vector. Also, vertical projection is performed on the text lines to obtain a second flag vector for the text lines. Further, a number of run-lengths of consecutive 1's and 0's is computed in the second flag vectors. Furthermore, text is localized in the image based on the computed number of run-lengths of consecutive 1's and 0's in the second flag vectors.