Image signal processing device and image signal processing method, and computer program

An image signal processing method comprising:

• enlarging or reducing a central image segment of a stereoscopic image signal by a magnification factor according to a desired stereoscopic effect;
• reduction-processing a surrounding image segment of the stereoscopic image signal by a corresponding magnification factor when the central area control processing enlarges the central image segment, and enlargement-processing a surrounding image segment of the stereoscopic image signal by a corresponding magnification factor when reducing the central image segment;
• and
• performing, in an image segment that transitions between the central image segment and the surrounding image segment, a process of connecting a gap between the enlargement and reduction factors of the central image segment and the surrounding image segment using non-linear scaling.

A computer program described as a computer-readable type so as to execute processing of a stereoscopic image signal on a computer, and for making the computer function as:

• a central area control processing unit that enlarges or reduces a central image segment of a stereoscopic image signal by a magnification factor according to a desired stereoscopic effect;
• a surrounding area control processing unit that reduction-processes a surrounding image segment of the stereoscopic image signal by a corresponding magnification factor when the central area control processing unit enlarges the central image segment, and enlargement-processes a surrounding image segment of the stereoscopic image signal by a corresponding magnification factor when the central area control processing unit reduces the central image segment;
• and
• a transition area control processing unit that performs, in an image segment that transitions between the central image segment and the surrounding image segment, a process of connecting a gap between the enlargement and reduction factors of the central image segment and the surrounding image segment using non-linear scaling.