Method and apparatus for generating stereoscopic image data stream by using camera parameter, and method and apparatus for restoring stereoscopic image by using camera parameter

A stereoscopic image data stream generating method comprising:

• encoding image data of a stereoscopic image;
• determining a camera parameter based on individual characteristics of each of two or more cameras which have captured the stereoscopic image;
• and
• inserting the image data and the determined camera parameter into a data stream,
• wherein the determining of the camera parameter comprises:
• determining a principal point information setting parameter indicating whether information, regarding each of principal points of a primary view image and a secondary view image of the stereoscopic image, is set;
• and
• determining a primary principal point parameter representing the principal point of the primary view image of the stereoscopic image and a secondary principal point parameter representing the principal point of the secondary view image of the stereoscopic image,
• wherein the principal point of the primary view image is a crossing point of the primary view image and an optical axis, and
• if the principal point information setting parameter indicates that the information regarding the principal point is not set, the extracting the camera parameter further comprises determining that a center point of the stereoscopic image is different from a center point of an area photographed by one of the two or more cameras.

A non-transitory computer readable recording medium having recorded thereon a computer program for executing a stereoscopic image restoring method, the method comprising:

• parsing a received data stream into image data of a stereoscopic image and information regarding the stereoscopic image;
• extracting, based on the parsed information, a camera parameter depending on individual characteristics of each of two or more cameras which have captured the stereoscopic image;
• and
• decoding and restoring, based on the extracted camera parameter, the image data of the stereoscopic image,
• wherein the extracting the camera parameter comprises:
• extracting a principal point information setting parameter indicating whether information regarding each of principal points of a primary view image and a secondary view image of the stereoscopic image is set;
• and
• if the principal point information setting parameter indicates that the information regarding the principal points is set, extracting a primary principal point parameter representing the principal point of the primary view image of the stereoscopic image and a secondary principal point parameter representing the principal point of the secondary view image of the stereoscopic image,
• wherein the principal point of the primary view image is a crossing point of the primary view image and an optical axis, and
• if the principal point information setting parameter indicates that the information regarding the principal point is not set, the extracting the camera parameter further comprises determining that a center point of the stereoscopic image is different from a center point of an area photographed by one of the two or more cameras.

A non-transitory computer readable recording medium having recorded thereon a computer program for executing a stereoscopic image data stream generating method, the method comprising:

• encoding image data of a stereoscopic image;
• determining a camera parameter based on individual characteristics of each of two or more cameras which have captured the stereoscopic image;
• and
• inserting the image data and the determined camera parameter into a data stream,
• wherein the determining of the camera parameter comprises:
• determining a principal point information setting parameter indicating whether information, regarding each of principal points of a primary view image and a secondary view image of the stereoscopic image, is set;
• and
• determining a primary principal point parameter representing the principal point of the primary view image of the stereoscopic image and a secondary principal point parameter representing the principal point of the secondary view image of the stereoscopic image,
• wherein the principal point of the primary view image is a crossing point of the primary view image and an optical axis, and
• if the principal point information setting parameter indicates that the information regarding the principal point is not set, the extracting the camera parameter further comprises determining that a center point of the stereoscopic image is different from a center point of an area photographed by one of the two or more cameras.