A New Text-Line Alignment Approach Based on Piece-Wise Painting Algorithm for Handwritten Documents

—Because of writing styles of different individuals, some of the text-lines may be curved in shape. For recognition of such text-lines, their proper alignment is necessary. In this paper, we propose a text-line alignment technique based on painting algorithm. Here at first, Piece-wise Painting Algorithm (PPA) is used to get a number of black and white rectangular patches all along the text-line for text-line alignment. Identifying the degree of oscillation of the input text-line, some candidate pixels are also obtained based on horizontal projection and center points of the black patches. Using the degree of oscillation of the input text image and the candidate pixels a curve or straight line is fit to trace the baseline. Subsequently, all components of the text-line are deskewed based on analyzing the characteristic of the fit curve or line to align the components with respect to the horizontal imaginary baseline. The proposed algorithm was evaluated with 128 Persian handwritten tex...

• Type: Journal
• Year: 2011
• Where: ICDAR
• Authors: Alireza Alaei, P. Nagabhushan, Umapada Pal
• Keywords: Alignment Technique, Black Patches, Document Analysis, ICDAR 2011, Proper Alignment