US 8,558,875 B2Granted

Video signal processing device

AssigneePanasonic Corporation

InventorsHideki Morino, Ryuichi Shibutani, Haruko Terai, Nobutoshi Fujinami

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Abstract

The video signal processing device has a parallax detection unit for detecting the parallax between a right-eye video signal and a left-eye video signal and outputting the detected parallax as a parallax detection signal. The video signal processing device has an encoding noise detection unit for detecting an encoding noise generated by encoding processing, outputting an encoding noise detection signal corrected by using a detection result of the detected encoding noise based on the parallax detection signal. The video signal processing device has an encoding noise removing unit for performing at least one of reducing the encoding noise by filtering processing using the encoding noise detection signal, and reducing, based on the parallax detection signal, the encoding noise by replacing the data of a noise generating pixel in the right-eye video signal and the left-eye video signal.

Claims10

Dependent claims

A video signal processing device in a stereoscopic image display device for displaying a stereoscopic image with a right-eye video signal and a left-eye video signal that have a parallax and that have different encoding processing blocks from each other, the video signal processing device comprising:

an encoding noise detection unit for detecting encoding noises that are generated from at least one of the right-eye video signal and the left-eye video signal by encoding processing, and outputting a corrected encoding noise detection signal based on a parallax from right-eye video included in the right-eye video signal and a left-eye video included in the left-eye video signal;
and
an encoding noise removing unit for:
when the encoding noises are detected as being generated from both the right-eye video signal and the left-eye video signal, reducing the encoding noises from both the right-eye video signal and the left-eye video signal performing a filtering process using the encoding noise detection signal;
and
when the encoding noises are detected as being generated from only one of the right-eye video signal and the left-eye video signal, reducing, based on the parallax, the encoding noises by replacing data of a noise generating pixel in the one of the right-eye video signal and the left-eye video signal from which the encoding noises are detected with corresponding pixel data, in the other of the right-eye video signal and the left-eye video signal from which the encoding noises are not detected, that is shifted by the parallax and contains no noise,
wherein the encoding noise detecting unit extracts signal components between a plurality of pixels with a high pass filter of a spatial direction, and, when there is no correlation between the signal components of the plurality of pixels, the encoding noise detection unit detects a plurality of pixels with no correlation as a block noise, a block boundary being between the plurality of pixels.

4 more elements

A video signal processing method in a stereoscopic image display device for displaying a stereoscopic image with a right-eye video signal and a left-eye video signal that have a parallax and that have different encoding processing blocks from each other, the video signal processing method comprising:

an encoding noise detection, step, using an encoding noise detection unit, of detecting encoding noises that are generated from at least one of the right-eye video signal and the left-eye video signal by encoding processing, and outputting a corrected encoding noise detection signal based on a parallax from a right-eye video included in the right-eye video signal and a left-eye video included in the left-eye video signal;
and
an encoding noise removing step, using an encoding noise removing unit, of:
when the encoding noises are detected as being generated from both the right-eye video signal and the left-eye video signal, reducing the encoding noises from both the right-eye video signal and the left-eye video signal by performing a filtering process using the encoding noise detection signal;
and
when the encoding noises are detected as being generated from only one of the right-eye video signal and the left-eye signal, reducing, based on the parallax, the encoding noises by replacing data of a noise generating pixel in the one of the right-eye video signal and the left-eye video signal from which the encoding noises are detected with corresponding pixel data, in the other of the right-eye video signal and the left-eye video signal from which the encoding noises are not detected, that is shifted by the parallax and contains no noise,
wherein the encoding noise detection step extracts signal components between a plurality of pixels with a high pass filter of a spatial direction, and, when there is no correlation between the signal components of the plurality of pixels, detects a plurality of pixels with no correlation as a block noise, a block boundary being between the plurality of pixels.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/989,460Filed 28 Sep 2009
Priority: JP 2008-25015529 Sep 2008
Published: US 2011/0037835 A117 Feb 2011
Granted: 15 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04N 19/86
Using pre-processing or post-processing specially adapted for video compression: involving reduction of coding artifacts, e.g. of blockiness
H04N 13/10
Stereoscopic video systems; Multi-view video systems; Details thereof: processing, recording or transmission of stereoscopic or multi-view image…
H04N 19/117
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: filters, e.g. for pre-processing or…
H04N 19/136
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: incoming video signal characteristics or properties