Stereoscopic 3D-video image digital decoding system and method

Inactive Publication Date: 2007-02-22
TDVISION CORP SA DE CV
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  • Description
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Benefits of technology

[0023] U.S. Pat. No. 6,678,331 granted on Jan. 13, 2004 to Moutin et al., protects a MPEG decoder, which uses a shared memory. Actually, the circuit includes a microprocessor, a MPEG decoder, which decodes a flat image sequ

Problems solved by technology

The transport stream is used in systems with a greater error possibil

Method used

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  • Stereoscopic 3D-video image digital decoding system and method
  • Stereoscopic 3D-video image digital decoding system and method
  • Stereoscopic 3D-video image digital decoding system and method

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Embodiment Construction

[0040] The combination of hardware and software algorithms makes possible the stereoscopic 3D-image information compression, which are received as two independent video signals but with the same time_code, corresponding to the left and right signals coming from a 3Dvision® camera, by sending two simultaneous programs with stereoscopic pair identifiers, thus promoting the coding-decoding process. Also, two interdependent video signals can be handled by obtaining their difference, which is stored as a “B” type frame with the image type identifier. As the coding process was left open in order to promote the technological development, it is only necessary to follow this decoding process, namely: apply variable-length decoding to the coded data where a substantial reduction is obtained, but a look-up table should be used to carry out decoding; apply an inverse scan process; apply an inverse quantization process in which each data is multiplied by a scalar; apply the inverse cosine transf...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04N11/04H04N11/02G06T9/00G06T15/00H04N7/26H04N7/50H04N13/00H04N19/593
CPCH04N19/597H04N19/70H04N19/30H04N19/42H04N19/593H04N19/44H04N19/61H04N13/00
Inventor GUTIERREZ NOVELO, MANUEL RAFAEL
Owner TDVISION CORP SA DE CV
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