Information processing apparatus and image reading apparatus judging title of read document

An information processing apparatus comprising a controller that includes a processor and, by the processor executing a control program, functions as:

• a character area extractor configured to extract character areas from a document image acquired by reading a document in units of rows and acquire position information of each of the extracted character areas;
• a feature quantity calculator configured to calculate a feature quantity of a character area using the position information of the character area and information of the document image;
• a machine learning processor configured to generate a feature quantity data set configured using the feature quantities of the character areas and generate a machine learning model by performing machine learning of title judgment;
• a title reliability calculator configured to calculate a title reliability level representing a possibility of inclusion of a title in a character area for each character area on the basis of the feature quantity data set and the machine learning model;
• a character recognizer configured to perform character recognition of a character area having the title reliability level exceeding a threshold set in advance to convert the character area into text data;
• a title candidate storage device configured to store character strings that are title candidates;
• and
• a title judger configured to detect text data in which a character string stored by the title candidate storage device is included among text data converted by the character recognizer and judge the detected text data as a title of the document.