1. Zhou, Y.P., Tan, C.L.: Hough technique for bar charts detection and recognition in document images. In: International Conference on Image Processing, pp. 494–497 (2000)
2. Zhou, Y.P., Tan, C.L.: Learning-based scientific chart recognition. In: 4th IAPR International Workshop on Graphics Recognition, GREC 2001, pp. 482–492 (2001)
3. Song, J., Su, F., Chen, J., Tai, C.L., Cai, S.: Line net global vectorization: an algorithm and its performance analysis. In: IEEE Conference on Computer Vision and Pattern Recognition, South Carolina, pp. 383–388 (2000)
4. Lecture Notes in Computer Science;K. Tombre,2002