Camera information coding/decoding method for synthesizing stereoscopic real video and a computer graphic image

A camera information decoding method for synthesizing a stereoscopic real video and a computer graphic image, the method comprising the steps of:

• if a coded camera information of a current frame at a camera information stream is inputted, decoding the inputted camera to acquire a camera displacement information between the frames;
• adding the camera displacement information and a camera information of a previous frame to calculate a location vector, viewpoint vector, and upward vector information of the camera of the current frame;
• updating the calculated location vector, viewpoint vector, and upward vector information of the camera of the current frame as the camera information on the previous frame;
• and
• synthesizing the stereoscopic real video and the computer graphic image by use of the location vector, viewpoint vector, and upward vector information of the camera of the current frame.

A recording medium for executing a camera information coding method for synthesizing a stereoscopic real video and a computer graphic image, the recoding medium capable of being read by a digital processor, and storing a program of commands executed by the digital processor, the program being implemented by types, with the program comprising the steps of:

• detecting and inputting a camera information on a corresponding frame of an image being pictured at present;
• calculating each component difference between the camera information on an inputted present (t) frame and a camera information on a just previous (t−1) frame to acquire a camera displacement information between the frames;
• coding the camera displacement information between the frames to compress and store pictured image contents and the coded camera information;
• and
• updating the coded camera information on the corresponding frame as the camera information on the previous frame.

A recording medium for executing a camera information decoding method for synthesizing a stereoscopic real video and a computer graphic image, the recoding medium capable of being read by a digital processor, and storing a program of commands executed by the digital processor, the program being implemented by types, with the program comprising the steps of:

• if a coded camera information of a current frame at a camera information stream is inputted, decoding the inputted camera to acquire a camera displacement information between the frames;
• adding the camera displacement information and a camera information of a previous frame to calculate a location vector, viewpoint vector, and upward vector information of the camera of the current frame;
• updating the calculated location vector, viewpoint vector, and upward vector information of the camera of the current frame as the camera information on the previous frame;
• and
• synthesizing the stereoscopic real video and the computer graphic image by use of the location vector, viewpoint vector, and upward vector information of the camera of the current frame.