Combining Force Histogram and Discrete Lines to Extract Dashed Lines

A new method to extract dashed lines in technical document is proposed in this paper by combining force histogram and discrete lines. The aim is to study the spatial location of couples of connected components using force histogram and to refine the recognition by considering surrounding discrete lines. This new model is fast and it allows a good extraction of occulted patterns in presence of noise. Efficient common methods require several thresholds to process with technical documents. The proposed method requires only few thresholds which can be automatically set from data.