Image processing apparatus, image processing method, and computer program

An image processing apparatus comprising:

• a character recognition unit configured to execute character recognition processing for a plurality of character images in a document image to obtain character codes corresponding to the respective character images;
• and
• a generation unit configured to generate a digital document, wherein the digital document includes the document image, a plurality of character codes obtained by said character recognition unit, glyph data of an identical shape to be used upon rendering characters corresponding to the plurality of character codes, and a description required to render the glyph data corresponding to the plurality of character codes with a size smaller than sizes of the character images at positions corresponding to lower ends of the character images in the document image.

An image processing method comprising:

• controlling a character recognition unit to execute character recognition processing for a plurality of character images in a document image to obtain character codes corresponding to the respective character images;
• and
• controlling a generation unit to generate a digital document, wherein the digital document includes the document image, a plurality of character codes obtained in the step of controlling a character recognition unit, glyph data, and a description required to render the glyph data corresponding to the plurality of character codes with a size smaller than sizes of the character images at positions corresponding to lower ends of the character images in the document image, wherein the glyph data is used commonly to the plurality of character codes when rendering characters corresponding to the plurality of character codes.

An image processing method comprising:

• controlling a character recognition unit to execute character recognition processing for a plurality of character images in a document image to obtain character codes corresponding to the respective character images;
• and
• controlling a generation unit to generate a digital document, wherein the digital document includes the document image, a plurality of character codes obtained in the step of controlling a character recognition unit, glyph data of an identical shape to be used upon rendering characters corresponding to the plurality of character codes, and a description required to render the glyph data corresponding to the plurality of character codes with a size smaller than sizes of the character images at positions corresponding to lower ends of the character images in the document image.

A non-transitory computer-readable storage medium retrievably storing a computer program for making a computer execute the steps of:

• executing character recognition processing for a plurality of character images in a document image to obtain character codes corresponding to the respective character images;
• and
• generating a digital document, wherein the digital document includes the document image, a plurality of character codes obtained in the step of executing character recognition processing, glyph data, and a description required to render the glyph data corresponding to the plurality of character codes with a size smaller than sizes of the character images at positions corresponding to lower ends of the character images in the document image, wherein the glyph data is used commonly to the plurality of character codes when rendering characters corresponding to the plurality of character codes.

A non-transitory computer-readable storage medium retrievably storing a computer program for making a computer execute the steps of:

• executing character recognition processing for a plurality of character images in a document image to obtain character codes corresponding to the respective character images;
• and
• generating a digital document, wherein the digital document includes the document image, a plurality of character codes obtained in the step of executing character recognition processing, and glyph data of an identical shape to be used upon rendering characters corresponding to the plurality of character codes, and a description required to render the glyph data corresponding to the plurality of character codes with a size smaller than sizes of the character images at positions corresponding to lower ends of the character images in the document image.