CN101635803B

CN101635803B - Method for displaying traditional images on wide screen

Info

Publication number: CN101635803B
Application number: CN2009103056135A
Authority: CN
Inventors: 郭伟; 王鑫; 于立明
Original assignee: Sichuan Hongwei Technology Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2011-05-11
Anticipated expiration: 2029-08-14
Also published as: CN101635803A

Abstract

The invention relates to a method for displaying traditional images on a wide screen for solving the problems of image deformation and easy ageing in the prior art. The method for displaying traditional images on a wide screen comprises the following steps: a. dividing an input image into two eudipleural parts; b. dividing each divided part into M areas again, and the M is greater than or equal to 2 and is a positive integral; c. scaling the linear proportion of N areas in a left half part and a right half part near an image center in a horizontal direction, and the N is greater than or equal to 2 and is an even number; d, scaling other areas in different proportions according to user requirements in the horizontal direction; e. retaining the unchanged effect of the horizontal direction, and after the image is cut in a definite proportion in a vertical direction, linearly stretching the image with the residual proportion to the height of a screen to display. The method for displaying traditional images on the wide screen can improve the visual effect, avoid accelerated screen aging and is especially suitable for displaying traditional images on a wide screen.

Description

The method that on widescreen, shows traditional images

Technical field

The present invention relates to TV tech, relate to a kind of method that on wide-screen television, shows traditional images specifically.

Background technology

Along with the fast development of multimedia and terminal Display Technique, display terminals such as wide-screen TV more and more widely, for example 16:9,15:9,16:9 are present popular widescreens.Show traditional images (referring to the 4:3 picture signal) on these widescreens, be extensive use of linear processing methods in the prior art, promptly adopt full frame ratio to amplify and stretch, image distortion was out of shape when screen was filled, and had influenced user's visual effect.Therefore, certain customers are arranged in order to keep the shape of original image, just do not carry out stretch processing, the part zone (such as zone line) that image can only display screen so, like this widescreen is shown that resource is exactly a kind of waste, simultaneously also can cause the operating state of whole screen inhomogeneous, quicken screen aging easily.

Summary of the invention

Technical problem to be solved by this invention is: propose a kind of method that shows traditional images on widescreen, solve the anamorphose and the aging easily problem that exist in the prior art.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: show the method for traditional images on widescreen, may further comprise the steps:

A. input picture is divided into symmetrical two parts;

B. each part after will dividing is divided into M zone once more, and it is also symmetrical to guarantee to divide once more M zone of M zone of back left-half and right half part, M 〉=2 and be integer;

C. to carrying out linear scale convergent-divergent on the horizontal direction near N zone of picture centre in left-half and the right half part, N 〉=2 and be even number;

D. the convergent-divergent that other zones are done respectively according to user's demand on the horizontal direction of different proportion is handled;

E. keep the horizontal direction effect constant, behind the image cut certain proportion on the vertical direction, the image linearity of remaining proportion is stretched to screen height shows.

Among the step c, the physics on the pixel number on described linear scale=input picture line direction/screen lines direction is counted.

Among the step e, to the image on the vertical direction up and down symmetry respectively shear 2.5%, the image linearity of residue 95% ratio is stretched to screen height shows.

The invention has the beneficial effects as follows: improve the visual effect that the user watches TV, and avoided the screen accelerated ageing.

Embodiment

The invention will be further described below in conjunction with embodiment.

The present invention has changed the processing mode of in the prior art traditional images all being carried out the linear scale convergent-divergent, but what mainly see when watching TV in view of human eye is the core of image, therefore only picture centre is partly carried out the horizontal direction linear scale guarantees that the image of this part is undistorted as far as possible, and carry out convergent-divergent according to different ratio on user's the demand employing horizontal direction for the image of peripheral part, again vertical direction being carried out a certain proportion of symmetry afterwards shears, carry out linear stretch then, so just guaranteed that the demonstration of traditional images on whole widescreen is undistorted substantially.

Embodiment:

This example is showing that on the TV screen of 16:9 traditional 4:3 image is an example, and processing method is divided into two big steps: the non-linear convergent-divergent on the image level direction handle and the image vertical direction on shear treatment.Handle for the non-linear convergent-divergent on the image level direction, may further comprise the steps (1) division input picture is symmetrical two parts, even because non-linear convergent-divergent, we must guarantee that also left and right sides two parts are symmetrical fully, not so have extremely odd visual effect, influence the user and watch, (following treatment step also all must be followed the principle of symmetry, repeats no more).(2) left and right sides two parts are divided into three regional W0, W1, W2, in order to guarantee demonstration all over the screen, need to guarantee this trizonal line direction pixel number sum=screen level direction physics count/2; This step is to prepare for next step adopts different scalings to handle at different zones, and the possibility of the many more distortions of regional number of division is just more little, but the algorithm amount is but big more.(3) to being that convergent-divergent on the horizontal direction is carried out according to linear scale in the W2 zone of the W2 zone of left-half and right half part near the zone of picture centre, physics on pixel number on this ratio=input picture line direction/screen lines direction is counted, be when watching TV like this in view of the user, general all is the custom of watching core, guarantees that as far as possible the picture centre part is undistorted.(4) convergent-divergent that other zones are carried out on the horizontal direction according to user's the shared different ratio of ratio employing of needs and central area is handled, certain zone may be stretched in other words, a zone may be compressed in addition, ratio is to regulate according to user's demand, for the processing of entire image, be exactly nonlinear like this, because each regional scaling may be inconsistent, but but be linear for single zone, because be unique to the scaling of the image block in single zone.

Vertical shear to input picture is handled: it is constant to keep the horizontal direction effect, and the symmetrical up and down image of respectively shearing 2.5% ratio of vertical direction is stretched to screen height with remaining 95% image linearity.Here be noted that when shearing and still will follow symmetry principle that the image that is sheared is wanted symmetry fully, by above-mentioned processing the image of core is consistent as far as possible with the 4:3 input picture, improves user's impression.

Emphasis among the foregoing description and the present invention all is the method that shows classical signal on the widescreen being described in, and in fact also is suitable for for the processing method that shows widescreen signal on conventional screen, just has any different on the ratio of choosing, and gives unnecessary details no longer one by one here.

Claims

1. on widescreen, show the method for traditional images, it is characterized in that: may further comprise the steps:

A. input picture is divided into symmetrical two parts;

2. the method that shows traditional images on widescreen as claimed in claim 1, it is characterized in that: among the step c, the physics on the pixel number on described linear scale=input picture line direction/screen lines direction is counted.

3. the method that shows traditional images on widescreen as claimed in claim 1 or 2 is characterized in that: among the step e, to the image on the vertical direction up and down symmetry respectively shear 2.5%, the image linearity of residue 95% ratio is stretched to screen height shows.