Three-dimensional image reduction method

A three-dimensional image and image technology, applied in the field of image processing, can solve the problem of no solution for restoring three-dimensional images, and achieve the effect of improving subjective quality and improving objective quality.

Active Publication Date: 2013-08-14
雷欧尼斯(北京)信息技术有限公司
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[0010] However, there is no effective solution for

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[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The present invention is described in detail by taking SideBySide as an example herein. Other 3D video formats only differ in sampling, and there is no difference in specific interpolation algorithms.

[0029] The present invention adopts a boundary-oriented interpolation algorithm, and its basic idea is to perform interpolation along the direction with the smallest gradient. In this method, gradients in three directions are selected for calculation, and more gradients can be selected for calculation. However, according to actual calculation, selecting more gradients has less influence on the change of the interpolation result.

[0030] The value of the pixel whose coordinates are (i, j) is represented by P(i, j).

[0031] First, calculate the horizontal gradient G of the image according to the following formula 0 , 45 degree gradient...

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Abstract

The invention discloses a three-dimensional image reduction method which comprises the following steps: calculating gradients in the directions of 0 degree, 45 degrees and 135 degrees according to formula (1), formula (2) and formula (3), wherein weighting coefficients are exhaustively chosen from 10 groups of coefficients according to PSNR (peak signal to noise ratio); and calculating interpolations in the directions of 0 degree, 45 degrees and 135 degrees by adopting the principle of interpolating in the direction with the smallest gradient, wherein formula (1), formula (2) and formula (3) refer to the patent specification. As the three-dimensional image reduction method adopts the principle of interpolating in the direction with the smallest gradient, image objective quality and particularly the subjective quality are improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a three-dimensional image restoration method. Background technique [0002] Currently, various 3D stereo formats are encoded in a frame compatible mode. figure 1 Shown are several frame-compatible stereo encoding formats, where x denotes left view and o denotes right view. All of these modes first downsample the left and right views in one mode to reduce the number of pixels to normal, and then combine the left and right views into one image, which is then encoded into the bitstream. For example, the side by side mode is to downsample both the left and right views in the horizontal direction, and then combine them into one image for encoding; while the top bottom mode downsamples both the left and right views in the vertical direction. Then merge into one image for encoding. [0003] At the decoding end, since both the left-view and right-view images of the recovered ...

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Application Information

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IPC IPC(8): H04N13/00H04N21/40G06T3/40G06T5/00
Inventor 马士超
Owner 雷欧尼斯(北京)信息技术有限公司
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