Stereoscopic 3D-video image digital decoding system and method

Abstract

Described herein is a MPEG-2 compatible stereoscopic 3D-video image digital decoding method and system. In order to obtain 3D-images from a digital video stream, modifications are made to the current MPEG2 decoders, by means of software and hardware changes in different parts of the decoding process. Namely, the video_sequence structures of the video data stream are modified via software to include the necessary flags at the bit level of the image type in the TDVision® technology. Modifications are also made in the decoding processes as well as in decoding the information via software and hardware, wherein a double output buffer is activated, a parallel and difference decoding selector is activated, the decompression process is executed, the corresponding output buffer is displayed; and the decoder is programmed via software to simultaneously receive and decode two independent program streams, each with an TDVision® stereoscopic identifier.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation of PCT Application No: PCT / MX2004 / 000012 filed on Feb. 27, 2004 in the Spanish language.FIELD OF THE INVENTION [0002] The present invention is related to stereoscopic video image display in the 3DVisor® device and, particularly, to a video image decoding method by means of a digital data compression system, which allows the storage of three-dimensional information by using standardized compression techniques. BACKGROUND OF THE INVENTION [0003] Presently, data compression techniques are used in order to decrease the bits consumption in the representation of an image or a series of images. The standardization works were carried out by a group of experts of the International Standardization Organization. Presently, the methods are usually known as JPEG (Joint Photographic Expert Group), and MPEG (Moving Pictures Expert Group). [0004] A common characteristic of these techniques is that the image blocks are ...

AI Technical Summary

Benefits of technology

[0025] It is an object of the present invention to provide a stereoscopic 3D-video image digital decoding system and method, comprised of changes in software and changes in hardware.

[0026] It is an additional object of the present invention to provide a decoding method where the normal video_sequence process is applied to the coded image data, i.e.variable_length decoding (VLD), inverse_scan; inverse_quantization, inverse_discrete_cosine_transform (IDCT), and motion_compensation.

[0026] It is an additional object of the present invention to provide a decoding method where the normal video_sequence process is applied to the coded image data, i.e.variable_length decoding (VLD), inverse_scan; inverse_quantization, inverse_discrete_cosine_transform (IDCT), and motion_compensation.

[0029] It is also another object of the present invention to provide a decoding process in which two interdependent (difference) video signals can be sent within the same video_sequence, in which information decoding is applied and is stored as a B type frame.

[0030] It is still another object of the present invention to provide a decoding process in which error correction is applied to the last obtained image when the movement and color correction vectors are applied.

[0034] It is also another object of the present invention to provide a 3D-image information decoding system, which executes the decompression process and displays the corresponding output buffer.

[0034] It is also another object of the present invention to provide a 3D-image information decoding system, which executes the decompression process and displays the corresponding output buffer.

Problems solved by technology

The transport stream is used in systems with a greater error possibility, such as satellite systems, which are susceptible to interference.

Images