CN103475823B - Display device and image processing method thereof - Google Patents

Abstract

A kind of image processing method, comprises the steps: electronic equipment screen anglec of rotation θ of detection display source images；According to described anglec of rotation θ, generate size and be suitable for the target image of described screen, described target image the most described source images anglec of rotation θ, and direction of rotation is in opposite direction with described screen rotation；Show described target image.The present invention also provides for the display device of a kind of correspondence.Above-mentioned image processing method and display device detect screen inclination angle in real time, and the image generated after adjustment keeps horizontal display effect, and user can watch different size of image by adjusting the angle of inclination of screen.

Description

Display device and image processing method thereof

Technical field

The present invention relates to image processing field, particularly relate to a kind of display device and image processing method thereof.

Background technology

Television set is the product that radio communication combines with broadcast, and its appearance changes the life of the mankind, letter Breath is propagated and mode of thinking.Television set comes into huge numbers of families, nowadays, and its function the most not only office It is limited to watch programme televised live, obtain Domestic News, accept long-distance education etc., also serves as interior decoration simultaneously A part for ornaments, is one of requisite household electrical appliances of family.Television set is the most immediately to transmit work The equipment of dynamic visual pattern.The transmitting terminal of television system presses brightness and colourity each fine fraction of scenery After being converted to the signal of telecommunication, sequentially transfer.The bright of each fine fraction is manifested by corresponding geometric position at receiving terminal Degree and colourity reappear view picture original image.

But, the display device such as television set in the market, mobile phone, panel computer is only capable of passing through self adaptation Adjust the viewing effect of two angles, cause in vision and experience effect the most single, there is the biggest office Sex-limited.

Summary of the invention

Based on this, it is necessary to provide a kind of vision and the more preferable display device of experience effect and image processing method thereof Method.

A kind of image processing method, comprises the steps:

Electronic equipment screen anglec of rotation θ of detection display source images；

According to described anglec of rotation θ, generate size and be suitable for the target image of described screen, described target image The most described source images anglec of rotation θ, and direction of rotation is in opposite direction with described screen rotation, wherein, according to Described anglec of rotation θ is calculated the dimensional parameters (a of described target image₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen, and θ is described screen rotation angle；

According to described screen rotation angle, θ, described dimensional parameters (a₀, b₀) and described source images generate long a width of (a, b) picture image, described picture image includes long a width of (a, default background b) and the described default back of the body of embedding Scape is interior and grows a width of (a₀, b₀) the described target image adapting to described screen, described target image is relatively described Screen reversely rotates θ；

Show described target image.

In one of them embodiment, the electronic equipment screen anglec of rotation θ step of diagram picture includes:

Described electronic equipment screen anglec of rotation θ is detected by gyroscope.

In one of them embodiment, also comprise the steps:

Receive the parameter input of user；

Input parameter according to described user and regulate default background described in described image information and described target respectively The image display parameters of image；

Picture image is shown according to described display parameters.

A kind of display device, including: angle detection module, picture generation module and screen,

Described angle detection module is used for detecting described screen rotation angle, θ；

Described picture generation module, for according to described anglec of rotation θ, generates size and is suitable for the mesh of described screen Logo image, described target image is relative to source images anglec of rotation θ, and direction of rotation and described screen rotation direction On the contrary；

Described picture generation module specifically for being calculated the size of described target image according to described anglec of rotation θ Parameter (a₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen, and θ is screen rotation angle；

It is additionally operable to according to described screen rotation angle, θ, described dimensional parameters (a₀, b₀) and source images generation length and width For (a, b) picture image, described picture image includes long a width of (a, default background b) and embed described presetting Background is interior and grows a width of (a₀, b₀) adapt to described screen described target image, described target image is relative to institute State screen and reversely rotate θ；

Described screen is used for showing image.

In one of them embodiment, described angle detection module detects the anglec of rotation of described screen by gyroscope Degree θ.

In one of them embodiment, also include:

Input module, for receiving the parameter input of user；

Described picture generation module is additionally operable to input parameter according to described user and regulates respectively in described image information Described default background and the display parameters of described target image；

Described screen is additionally operable to show picture image according to described display parameters.

Above-mentioned image processing method and display device detect screen inclination angle in real time, the image generated after adjustment Keeping horizontal display effect, user can watch different size of image by adjusting the angle of inclination of screen.

Furthermore it is also possible to preset the display effect of background according to the parameter regulation of user's input, it is achieved that preset The different brightness of background or color, in order to meet the vision requirement of different user.

Accompanying drawing explanation

Fig. 1 is the flow chart of steps of the image processing method of a preferred embodiment of the present invention；

Fig. 2 is target image maximized mathematical model schematic diagram in Fig. 1；

Fig. 3 is that in Fig. 1, anglec of rotation θ more than or equal to 0 ° and is less than or equal to source images and target image when 90 ° The mathematical model schematic diagram of mapping relations；

Source images and the reflecting of target image when Fig. 4 is that in Fig. 1, anglec of rotation θ is more than 90 ° and less than or equal to 180 ° Penetrate the mathematical model schematic diagram of relation；

Fig. 5 is the display effect schematic diagram of target image after screen rotation certain angle in Fig. 1；

Fig. 6 is the refinement step flow chart of step S102 shown in Fig. 1；

Fig. 7 is the flow chart of the image processing method of another embodiment；

Fig. 8 is the functional block diagram of the display device of a preferred embodiment of the present invention.

Detailed description of the invention

As it is shown in figure 1, the flow chart of steps of the image processing method that it is a preferred embodiment of the present invention, including Following steps:

Step S101, electronic equipment screen anglec of rotation θ of detection display source images.

The present embodiment is to detect described electronic equipment screen anglec of rotation θ by gyroscope.

Step S102, according to described anglec of rotation θ, generates size and is suitable for the target image of described screen, institute State target image the most described source images anglec of rotation θ, and direction of rotation is in opposite direction with described screen rotation.

Step S103, shows described target image.

Target image in order to generate after rotation can maximize, and refers to Fig. 2, and it is target figure in Fig. 1 As maximized mathematical model schematic diagram.Rectangle ABCD shown in Fig. 2 represents described screen size, that is to say Source images size, rectangle AB₁C₁D₁Represent target image size, a₀And b₀It is respectively the length of described target image Degree and width, a and b is respectively the length and width of screen, and θ is screen rotation angle, and α is described target figure The diagonal of picture and the angle on long limit, and known a is more than or equal to b.Described screen and described target image center Overlapping, center is K point shown in Fig. 2, and the two-end-point on target image diagonal intersects with the long margin frame of screen In a B₁(x₁, 0) and some D₁(a-x₁, b).From the above:

When anglec of rotation θ is more than or equal to 0 ° and less than or equal to 90 °, can get mesh according to Fig. 2 mathematical model schematic diagram Logo image is relative to screen (that is to say source images) reduced scale n, and the ratio according to three limits is identical, described Being calculated as follows of ratio n:

In conjunction with trigonometric function formula:

Can try to achieve according to the most 4. four formula:

Can be tried to achieve by the most 5. two formula:

$a_0=\frac{ab}{bcos\mathrm{\θ}+asin\mathrm{\θ}},b_0=\frac{b^2}{bcos\mathrm{\θ}+asin\mathrm{\θ}},$

In like manner can obtain, when anglec of rotation θ is more than 90 ° and less than or equal to 180 °, the long a of target image₀With wide b₀Meter Calculate as follows:

$a_0=\frac{ab}{-bcos\mathrm{\θ}+asin\mathrm{\θ}},b_0=\frac{b^2}{-bcos\mathrm{\θ}+asin\mathrm{\θ}},$

In sum, the long a of target image₀With wide b₀Calculating formula merges as follows:

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Empirical tests, is equally applicable above formula computational methods when anglec of rotation θ is more than 180 ° and is less than or equal to 360 °.

As it is shown on figure 3, it is that in Fig. 1, anglec of rotation θ more than or equal to 0 ° and is less than or equal to source images and target when 90 ° The mathematical model schematic diagram of the mapping relations of image.Point M shown in Fig. 3 (p, q) is the point being displayed in full screen image, M₁(p₁, q₁) it is that (p q) is mapped to the point on described postrotational rectangular target image to a M.In Fig. 3, angle beta is Straight line M₁B₁With straight line A₁B₁The angle of line.

As it is shown on figure 3, when anglec of rotation θ is more than or equal to 0 ° and is less than or equal to 90 °, q₁And p₁Calculating process As follows: to be easily calculated according to Fig. 3:

$sin\mathrm{\β}=\frac{q}{\sqrt{q^2+{(a-p)}^2}},cos\mathrm{\β}=\frac{a-p}{\sqrt{q^2+{(a-p)}^2}},$

$\begin{array}{c}{q}_1=n\×\sqrt{q^2+{(a-p)}^2}\×\sin (\mathrm{\θ}+\mathrm{\β})\\ =n\×\sqrt{q^2+{(a-p)}^2}\×(\sin \mathrm{\θ}\cos \mathrm{\β}+\cos \mathrm{\θ}\sin \mathrm{\β})\\ =n(a-p)\sin \mathrm{\θ}+nq\cos \mathrm{\θ}\end{array},$

$\begin{array}{c}{p}_1=x_1-n\×\sqrt{q^2+{(a-p)}^2}\×\cos (\mathrm{\θ}+\mathrm{\β})\\ =\frac{1}{2}\[\frac{b(a-b\tan \mathrm{\θ})}{b+a\tan \mathrm{\θ}}+a\]\\ -n\×\sqrt{q^2+{(a-p)}^2}\×(\cos \mathrm{\θ}\cos \mathrm{\β}-\sin \mathrm{\θ}\sin \mathrm{\β})\\ =(p-\frac{1}{2}a)n\cos \mathrm{\θ}+(q-\frac{1}{2}b)n\sin \mathrm{\θ}+\frac{a}{2}\end{array},$

In sum, it is calculated q₁And p₁Expression formula as follows:

$q_1=n(a-p)sin\mathrm{\θ}+nqcos\mathrm{\θ},p_1=(p-\frac{1}{2}a)ncos\mathrm{\θ}+(q-\frac{1}{2}b)nsin\mathrm{\θ}+\frac{a}{2},$

As shown in Figure 4, it is the source images and target image when anglec of rotation θ is more than 90 ° and less than or equal to 180 ° The mathematical model schematic diagram of mapping relations, the difference of Fig. 4 and Fig. 3 is that direction of rotation is contrary, q₁And p₁Meter Calculation process is as follows:

$sin\mathrm{\σ}=\frac{q}{\sqrt{q^2+p^2}},cos\mathrm{\σ}=\frac{p}{\sqrt{q^2+p^2}},$

And then obtain the following expression of q1 and p1:

$\begin{array}{c}{q}_1=b-n\sqrt{q^2+p^2}\sin (180-\mathrm{\θ}+\mathrm{\σ})\\ =b-n\sqrt{q^2+p^2}(\sin \mathrm{\θ}\cos \mathrm{\σ}-\cos \mathrm{\θ}\sin \mathrm{\σ})\\ =b-np\sin \mathrm{\θ}+nq\cos \mathrm{\θ}\end{array},$

$\begin{array}{c}{p}_1=a-\frac{a-n\sqrt{a^2+b^2}\cos (180-\mathrm{\θ}-\mathrm{\α})}{2}-n\sqrt{q^2+p^2}\cos (180-\mathrm{\θ}+\mathrm{\σ})\\ =\frac{a}{2}+\frac{1}{2}n\sqrt{a^2+b^2}(-\frac{a}{\sqrt{a^2+b^2}}\cos \mathrm{\θ}-\frac{b}{\sqrt{a^2+b^2}}\sin \mathrm{\θ})\\ -n\sqrt{q^2+p^2}(-\cos \mathrm{\θ}\cos \mathrm{\σ}-\sin \mathrm{\θ}\sin \mathrm{\σ})\\ =\frac{a}{2}+(p-\frac{1}{2}a)n\cos \mathrm{\θ}+(q-\frac{1}{2}b)n\sin \mathrm{\θ}\end{array}$

q₁And p₁Expression formula be:

$q_1=b-npsin\mathrm{\θ}+nqcos\mathrm{\θ},p_1=\frac{a}{2}+(p-\frac{1}{2}a)ncos\mathrm{\θ}+(q-\frac{1}{2}b)nsin\mathrm{\θ},$

The most easily prove, when anglec of rotation θ is more than 180 ° and is less than or equal to 270 °, q₁And p₁Expression formula Calculating process is as follows:

$\begin{array}{c}{q}_1=b-(a-p)n\sin (\mathrm{\θ}-180)-\mathrm{qn}\cos (\mathrm{\θ}-180)\\ =b+(a-p)n\sin \mathrm{\θ}+\mathrm{qn}\cos \mathrm{\θ}\end{array},$

$\begin{array}{c}{p}_1=\frac{a}{2}+(\frac{1}{2}a-p)n\cos (\mathrm{\θ}-180)+(\frac{1}{2}b-q)n\sin (\mathrm{\θ}-180)\\ =\frac{a}{2}+(p-\frac{1}{2}a)n\cos \mathrm{\θ}+(q-\frac{1}{2}b)n\sin \mathrm{\θ}\end{array},$

The expression formula of q1 and p1 is:

$q_1=b+(a-p)nsin\mathrm{\θ}+qncos\mathrm{\θ},p_1=\frac{a}{2}+(p-\frac{1}{2}a)ncos\mathrm{\θ}+(q-\frac{1}{2}b)nsin\mathrm{\θ},$

When anglec of rotation θ is more than 270 ° and is less than 360 °, q₁And p₁Expression formula calculate process as follows:

$\begin{array}{c}{q}_1=\mathrm{np}\sin (\mathrm{\θ}-180)-\mathrm{nq}\cos (\mathrm{\θ}-180)\\ =-\mathrm{np}\sin \mathrm{\θ}+\mathrm{nq}\cos \mathrm{\θ}\end{array},$

$\begin{array}{c}{p}_1=\frac{a}{2}-(p-\frac{1}{2}a)n\cos (\mathrm{\θ}-180)-(q-\frac{1}{2}b)n\sin (\mathrm{\θ}-180)\\ =\frac{a}{2}+(p-\frac{1}{2}a)n\cos \mathrm{\θ}+(q-\frac{1}{2}b)n\sin \mathrm{\θ}\end{array}$

The expression formula of q1 and p1 is:

$q_1=-npsin\mathrm{\θ}+nqcos\mathrm{\θ},p_1=\frac{a}{2}+(p-\frac{1}{2}a)ncos\mathrm{\θ}+(q-\frac{1}{2}b)nsin\mathrm{\θ},$

According to above-mentioned picture mapping algorithm, image when can realize Arbitrary Rotation maps.

By above-mentioned image processing method, when the screen of the display device such as television set, mobile phone adjusts, image All the time can keep horizontal display effect, and postrotational image is capable of panorama and maximizes display, More hommization.

As it is shown in figure 5, it is that the display effect of target image 601 is shown after in Fig. 1, screen 502 rotates to an angle It is intended to.Target image 601, after screen 502 rotates, still keeps level to show, and maximizes display at screen In 502.

As shown in Figure 6, its refinement step flow chart being step S102 shown in Fig. 1, including:

Step S601, is calculated the dimensional parameters (a of described target image according to described anglec of rotation θ₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen, and θ is screen rotation angle；

Step S602, according to described screen rotation angle, θ, described dimensional parameters (a₀, b₀) and source images life Growing up, a width of (a, b) picture image, described picture image includes long a width of (a, default background b) and embed institute State in default background and long a width of (a₀, b₀) adapt to screen described target image, described target image is relative Described screen reversely rotates θ.

The image processing method of another embodiment also includes following steps as shown in Figure 7:

Step S104, receives the parameter input of user.

Step S105, inputs parameter according to described user and regulates default background described in described picture image respectively With the image display parameters of described target image, such as brightness of image, contrast etc..When default background is black When color, the direct-type backlight of correspondence can be closed.

Step S106, shows picture image according to described display parameters.

Referring again to Fig. 5, the image content of screen 502 display includes target image 601 and background 603, presets Background 603 is Lycoperdon polymorphum Vitt, and user can be by arranging brightness or the color of parameter change background 603, to meet not Same user's request.

As shown in Figure 8, it is the functional block diagram of display device 80 of an embodiment, including: angle detection mould Block 801, picture generation module 803, input module 804, screen 805.

Angle detection module 801 is for detecting anglec of rotation θ of screen 805.

Picture generation module 803, for according to described anglec of rotation θ, generates size and is suitable for described screen 805 Target image, described target image is relative to source images anglec of rotation θ, and direction of rotation is revolved with described screen 805 Turn in opposite direction.

Described screen 805 is used for showing image.

Further, picture generation module 803 is for being calculated described target according to described anglec of rotation θ Dimensional parameters (a of image₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen 805, and θ is screen rotation angle.

Picture generation module 803 is additionally operable to according to described screen 805 anglec of rotation θ, described dimensional parameters (a₀, b₀) and source images generates, and long a width of (a, b) picture image, described picture image includes long a width of (a, b) pre- If background is interior with the described default background of embedding and a width of (a of length₀, b₀) adapt to described screen 805 described target Image, the most described screen of described target image 805 reversely rotates θ.

Described screen 805 is used for showing described background and described target image.

Input module 704 is for receiving the parameter input of user.

Picture generation module 703 is additionally operable to input parameter according to described user and regulates respectively in described image information Described default background and the image display parameters of described target image.

Screen 705 is additionally operable to show picture image according to described display parameters.

When display device 80, such as after the screen such as television set, mobile phone 805 rotates, the image generated after adjustment is protected The flat display effect of water holding, user can also watch different size of image by adjusting the angle of inclination of screen, More hommization.Furthermore it is also possible to preset the display effect of background according to the parameter regulation of user's input, real The different brightness of default background, the display of multicolour are showed, it is achieved that the intellectuality of human-computer interaction.

Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended Claim is as the criterion.

Claims (6)

1. an image processing method, it is characterised in that comprise the steps:

Electronic equipment screen anglec of rotation θ of detection display source images；

According to described anglec of rotation θ, generate size and be suitable for the target image of described screen, described target image The most described source images anglec of rotation θ, and direction of rotation is in opposite direction with described screen rotation, wherein, according to Described anglec of rotation θ is calculated the dimensional parameters (a of described target image₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen, and θ is described screen rotation angle；

According to described screen rotation angle, θ, described dimensional parameters (a₀, b₀) and described source images generate long a width of (a, b) picture image, described picture image includes long a width of (a, default background b) and the described default back of the body of embedding Scape is interior and grows a width of (a₀, b₀) the described target image adapting to described screen, described target image is relatively described Screen reversely rotates θ；

Show described target image.

Image processing method the most according to claim 1, it is characterised in that at described detection display figure The electronic equipment screen anglec of rotation θ step of picture includes:

Described electronic equipment screen anglec of rotation θ is detected by gyroscope.

Image processing method the most according to claim 1, it is characterised in that also comprise the steps:

Receive the parameter input of user；

Input parameter according to described user and regulate default background described in described image information and described target respectively The image display parameters of image；

Picture image is shown according to described display parameters.

4. a display device, it is characterised in that including: angle detection module, picture generation module and screen Curtain,

Described angle detection module is used for detecting described screen rotation angle, θ；

Described picture generation module, for according to described anglec of rotation θ, generates size and is suitable for the target figure of described screen Picture, described target image is relative to source images anglec of rotation θ, and direction of rotation is in opposite direction with described screen rotation； Described picture generation module specifically for being calculated the size of described target image according to described anglec of rotation θ Parameter (a₀, b₀),

$a_0=\frac{ab}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},b_0=\frac{b^2}{\left|bcos\mathrm{\θ}\right|+\left|asin\mathrm{\θ}\right|},$

Wherein a and b is respectively the length and width of described screen, and θ is screen rotation angle；

It is additionally operable to according to described screen rotation angle, θ, described dimensional parameters (a₀, b₀) and source images generation length and width For (a, b) picture image, described picture image includes long a width of (a, default background b) and embed described presetting Background is interior and grows a width of (a₀, b₀) adapt to described screen described target image, described target image is relative to institute State screen and reversely rotate θ；

Described screen is used for showing image.

Display device the most according to claim 4, it is characterised in that described angle detection module passes through Gyroscope detects anglec of rotation θ of described screen.

Display device the most according to claim 4, it is characterised in that also include:

Input module, for receiving the parameter input of user；

Described picture generation module is additionally operable to input parameter according to described user and regulates respectively in described image information Described default background and the display parameters of described target image；

Described screen is additionally operable to show picture image according to described display parameters.