Handwritten Documents Text Line Segmentation based on Information Energy

Abstract

The first step in the text recognition process is represented by the text line segmentation procedures. Only after text lines are correctly identified can the process proceed to the recognition of individual characters. This paper proposes a line segmentation algorithm based on the computation of an information content level, called energy, for each pixel of the image and using it to execute the seam carving procedure. The algorithm proposes the identification of text lines which follow the text more accurately with the expected downside of the computational overhead.

Document Analysis and Recognition: A survey

“…However, the segmentation of handwritten documents, particularly historical documents, is difficult to handle. Several approaches have been proposed for such complicated cases like Region growth techniques for Historical documents [116]; Probability Density for Printed [117] and handwritten texts; Smearing based methods for printed [118], historical [119] and handwritten documents [120]; Dynamic programming for Online documents [121]; Grouping-based methods for printed, handwritten [122]; Hough transform for printed [121], handwritten documents [123], [124]; Graph and MST for printed [125] and handwritten documents [126]; Energy maps for handwritten [113] and historical documents [112], [114]; Fringe maps for printed and handwritten [127]; Watershed & Flooding for printed, handwritten documents [128].…”

“…Energy map of pixels helps to determine the text and non-text seams: HW [113], Hist [112], [114] Fringe maps Fringe numbers are assigned based on the distance to the nearest black pixel: Pri/handwritten [127]…”

Investigasi Segmentasi Baris Untuk Citra Dokumen Sunda Lampau

“…(1) (5) paramater Iσ adalah citra asli keabuan yang dihaluskan dengan menggunakan filter Gaussian untuk simpangan baku σ…”

“…Oleh karena, metode segmentasi yang bebas dari proses binersasi terus dikembangkan. Boiangiu menggunakan informasi energi sebagai algoritma segmentasi baris [5]. Penelitian yang terkait dengan pemanfaatan informasi energi terus berkembang, diantaranya adalah metode Seam Carving.…”