Augmented reality system

A method of augmenting a video image of a book, comprising the steps of:

• receiving a video image of a book in which one or more pages are visible, and in which each visible page comprises a fiduciary marker, and in which a first high contrast pattern is visible on an extremity of an inside cover of the book that extends beyond the outer edges of said pages;
• estimating, with a processor, a position and orientation of the book from a fiduciary marker in the video image;
• estimating a position and orientation of a turning page of the book captured in the video image;
• estimating a position and orientation of the first high contrast pattern in the video image;
• detecting whether the position and orientation of the turning page and the cover of the book move in a corresponding manner;
• and
• distinguishing between turning of the cover of the book and turning the pages of the book independently of the cover of the book, in response to whether or not the position and orientation of the turning page and the cover of the book are detected to move in the corresponding manner.

A non-transitory computer program product comprising computer program instructions that when performed by a processor implement a method comprising the steps of:

• receiving a video image of a book in which one or more pages are visible, and in which each visible page comprises a fiduciary marker, and in which a first high contrast pattern is visible on an extremity of an inside cover of the book that extends beyond the outer edges of said pages;
• estimating a position and orientation of the book from a fiduciary marker in the video image;
• estimating a position and orientation of a turning page of the book captured in the video image;
• estimating a position and orientation of the first high contrast pattern in the video image;
• detecting whether the position and orientation of the turning page and the cover of the book move in a corresponding manner;
• and
• distinguishing between turning of the cover of the book and turning the pages of the book independently of the cover of the book, in response to whether or not the position and orientation of the turning page and the cover of the book are detected to move in the corresponding manner.