CN101945301B - Method for converting 2D (two-dimensional) character scene into 3D (three-dimensional) - Google Patents

Abstract

The invention discloses a method for converting 2D (two-dimensional) to 3D (three-dimensional) character scenes, which comprises the steps of firstly converting an RGB (red, green and blue) video signal with the character scenes through a YCbCr (YCbCr) color space, and judging the number of pixels with skin colors under different illumination; and then carrying out contour detection by a difference method on the RGB video signals, comparing the contour with skin color pixels, judging the position of the figure, taking the position of the figure as a close scene, increasing the parallax of the left eye and the right eye of the position of the figure, directly outputting the position of the non-figure or outputting the position of the non-figure after processing according to the distant scene, synthesizing the position of the non-figure with the processed figure image to form a 3D video signal, and outputting the converted 3D video signal. After the 3D conversion processing is carried out by the invention, most attention of a viewer is focused on the character when the video image is watched by people, and the viewer can obtain better 3D effect feeling and the character in the picture has better three-dimensional effect after the parallax of the character is increased.

Description

A kind of personage's scene 2D changes the 3D method

Technical field

The invention belongs to technical field of video processing, relate to a kind of video conversion method, especially a kind of personage's scene 2D changes the 3D method.

Background technology

Present stage, liquid crystal indicator has been widely used in the individual consumer's goods such as notebook computer, computer monitor, TV because in light weight, advantages such as volume is little, little power consumption, radiation is low, quality is good are arranged.

Along with the continuous development of science and technology, the 3D technology is more and more ripe, is also more and more accepted by masses.But main video basically all is traditional 2D video at present, and the film source of 3D has only the film and the fragment support of only a few.In order to let the popular 3D effect of better experiencing, proposing a kind of 2D easily, to change the 3D technology be the urgently hope of those skilled in the art institute.

This patent proposes a kind of personage's scene 2D changes the 3D algorithm, utilizes the colour of skin and profile detection technique, judges character positions, simultaneously character positions is thought close shot, strengthens the right and left eyes parallax, obtains 3D effect.Doing like this is because when watching video image, and spectators' overwhelming majority attentiveness all concentrates on the personage, if increase personage's parallax, will obtain better 3D effect.

Summary of the invention

The objective of the invention is to change the present situation that present major part all is the 2D video, provide a kind of personage's scene 2D to change the 3D method, this method is utilized the colour of skin and profile detection technique; Judge character positions; Simultaneously character positions is thought close shot, strengthen the right and left eyes parallax, obtain 3D effect.

The objective of the invention is to solve through following technical scheme:

This kind personage scene 2D changes the 3D method and is specially: the rgb video signal that at first will have personage's scene is judged the number of pixels of the colour of skin under the different light through the conversion of YCbCr color space; Again rgb video signal being carried out the differential technique profile detects; Through profile and skin pixel contrast; Judge character positions, as close shot, add the right and left eyes parallax of VIP present position with the personage present position; Non-personage present position is directly exported or handled the back according to distant view and export, with the 3D vision signal output that converts.

The method of above-described YCbCr color space conversion is:

(1) at first judge the brightness of pixel, when pixel intensity greater than overall brightness 60% the time, handle as high optical condition; When pixel intensity between overall brightness 30～60% the time, handle as the normal illumination condition; When pixel intensity less than overall brightness 30% the time, handle as the half-light condition;

(2) when handling as high optical condition, the YCbCr space colour of skin is distributed as 160＜Y＜255,80＜Cb＜140,123＜Cr＜180; When handling as the normal illumination condition, the YCbCr space colour of skin is distributed as 80＜Y＜220,70＜Cb＜130,30＜Cr＜190; When handling as the half-light condition, the YCbCr space colour of skin is distributed as 40＜Y＜150,80＜Cb＜140,130＜Cr＜180.

The present invention has following beneficial effect:

Personage's scene 2D that the present invention proposes changes the 3D method, utilizes the colour of skin and profile detection technique, judges character positions, simultaneously character positions is thought close shot, strengthens the right and left eyes parallax, obtains 3D effect.After handling like this, when people watched video image, beholder's overwhelming majority attentiveness all concentrated on the personage, behind the parallax that has increased the personage, will make the beholder obtain better 3D effect impression, made the personage in the picture have more stereoeffect.

Description of drawings

Fig. 1 is that personage's scene 2D of the present invention changes the 3D flow chart.

Embodiment

Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:

Referring to Fig. 1, personage's scene 2D that the present invention proposes changes the 3D method, specifically carries out according to following concrete steps:

1) rgb video signal with personage's scene that at first will import is judged the number of pixels of the colour of skin under the different light then through the conversion of YCbCr color space;

The method of above YCbCr color space conversion is:

(a) judge earlier the brightness of pixel, when pixel intensity greater than overall brightness 60% the time, handle as high optical condition; When pixel intensity between overall brightness 30～60% the time, handle as the normal illumination condition; When pixel intensity less than overall brightness 30% the time, handle as the half-light condition;

(b) when handling as high optical condition, the YCbCr space colour of skin is distributed as 160＜Y＜255,80＜Cb＜140,123＜Cr＜180; When handling as the normal illumination condition, the YCbCr space colour of skin is distributed as 80＜Y＜220,70＜Cb＜130,30＜Cr＜190; When handling as the half-light condition, the YCbCr space colour of skin is distributed as 40＜Y＜150,80＜Cb＜140,130＜Cr＜180.

According to above Rule of judgment, the rgb video signal that will have personage's scene carries out the conversion of YCbCr color space.

2) again rgb video signal is carried out the differential technique profile and detect,, judge character positions through the skin pixel contrast that profile and step 1) obtain;

3) with the personage present position as close shot, add the right and left eyes parallax of VIP present position;

4) non-personage present position is directly exported or handle the back according to distant view and export, with the synthetic 3D vision signal that forms of the character image after the processing, with the 3D vision signal output that converts.

In sum; It is emphasized that: more than personage's scene 2D of the present invention YCbCr data when changeing the YCbCr color space conversion that relates in the 3D method only just illustrate; When carrying out the conversion of YCbCr color space, also can adopt other rational YCbCr data to replace, any conversion process method identical with the inventive method all will fall within protection scope of the present invention.

Claims (1)

1. personage's scene 2D changes the 3D method, it is characterized in that: the rgb video signal that at first will have personage's scene is judged the number of pixels of the colour of skin under the different light through the conversion of YCbCr color space; Again rgb video signal being carried out the differential technique profile detects; Through profile and skin pixel contrast; Judge character positions, as close shot, add the right and left eyes parallax of VIP present position with the personage present position; Non-personage present position is directly exported or handled the back according to distant view and export, with the 3D vision signal output that converts; The method of said YCbCr color space conversion is:

(1) at first judge the brightness of pixel, when pixel intensity greater than overall brightness 60% the time, handle as high optical condition; When pixel intensity between overall brightness 30～60% the time, handle as the normal illumination condition; When pixel intensity less than overall brightness 30% the time, handle as the half-light condition;

(2) when handling as high optical condition, the YCbCr space colour of skin is distributed as 160＜Y＜255,80＜Cb＜140,123＜Cr＜180; When handling as the normal illumination condition, the YCbCr space colour of skin is distributed as 80＜Y＜220,70＜Cb＜130,30＜Cr＜190; When handling as the half-light condition, the YCbCr space colour of skin is distributed as 40＜Y＜150,80＜Cb＜140,130＜Cr＜180.

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