1. A method comprising: receiving, at a processor, a set of uncertain characters obtained as a result of a recognition process of a text image, the set of uncertain characters including an image of an uncertain character, a hypothesis about the uncertain character, and a confidence level associated with the hypothesis; causing, by the processor, a display device to present to a user the image of the uncertain character from the set of uncertain characters over a text readout; receiving, at the processor from a user input, marking data for the uncertain character; and adjusting, using the received marking data, the confidence level associated with the hypothesis about the uncertain character for obtaining a confirmed hypothesis linked to the uncertain character.