Image processing device, image processing method, and computer-readable storage medium

An image processing device comprising:

• a handwriting image renderer configured to render a stroke on a first layer;
• an image renderer configured to render an image representing at least one of a character, a symbol, and a figure on a second layer lower than the first layer;
• an external image renderer configured to render an external image that is externally acquired on a third layer lower than the second layer;
• a serializer configured to convert the stroke rendered on the first layer, the image rendered on the second layer, and the external image rendered on the third layer into data in a text format;
• a document creator configured to create document data corresponding to one page based on the data in a text format converted by the serializer;
• a handwriting recognizer configured to perform character recognition processing on a character string image represented by the stroke to acquire a character string from the character string image;
• and
• a character concatenation unit configured to determine whether adjacent characters on the character string acquired by the handwriting recognizer have common character information including a font name, a font size, a color, a height, an em or an en, and a locale, and concatenate the adjacent characters when the adjacent characters have the common character information.