Document dewarping via text-line based optimization
Document dewarping is an important problem in camera-based OCR. We formulate the dewarping as an optimization problem. The proposed method performs dewarping in a fully automatic manner. The proposed method can handle various layouts of documents. Our method yields the improved OCR performances compared with other methods.
document dewarping document image document rectification generalized cylindrical surface optical character recognition text-line based dewarping