CN104020565B - Display system with optical lens and display screen and image display method thereof - Google Patents

Abstract

The invention discloses a kind of display system and the method for displaying image thereof with optical lens and display screen, comprise the following steps: (1), reverse according to the optical parametric of optical lens described optical lens virtually, obtain a virtual counter-rotating lens, the image of counter-rotating lens and the image of described optical lens reverse; (2), according to the optical parametric of counter-rotating lens calculating the distortion factor of RGB tri-kinds of color components after described counter-rotating lens respectively, is a1, a2, a3; (3), by each pixel of a pre-display image carry out respectively amplifying a1, a2, a3 process doubly, obtain the RGB tri-kinds of color components after the distortion of each pixel, formed and compensate image; (4), after described compensation image exports described display screen display to, normal picture is shown as through described optical lens.Display system and the method for displaying image thereof with optical lens and display screen of the present invention, solving image can the problem of fuzzy or ghost image and distortion, and algorithm is quick, convenient.

Description

Display system with optical lens and display screen and image display method thereof

technical field

The invention belongs to the technical field of image processing, and in particular relates to a display system with an optical lens and a display screen and an image display method thereof.

Background technique

As an emerging technology in recent years, head-mounted display (HMD) is a kind of enlarged image on the ultra-micro display screen, which projects the image on the user's retina, and then presents a large-screen image in the eyes of the viewer. Head-mounted displays are currently widely used in many aspects such as industry, military affairs, literature and art, and entertainment.

FIG. 1 is a schematic diagram of the optical path of the current head-mounted display, as shown in FIG. 1 , wherein the human eye 100 can watch the image imaged on the straight flat panel display 101 through the eyepiece 102 . Due to the refraction of the light through the eyepiece 102, certain distortion will occur, as shown in Figure 2 and Figure 3, wherein Figure 2 is the normal display output image of the display, and Figure 3 is the image presented by the eyepiece 102 and thrown into the human eye Distorted image, the distortion of the projected image will not only affect the comfort of observation, but even cause the user to misjudge important information, resulting in unnecessary losses.

In addition, since the wavelengths of the three primary colors RGB are different, the angles of refraction through the eyepiece 102 are also different. As shown in FIG. , which will also affect the comfort of observation and the user's misjudgment of information.

Contents of the invention

The present invention provides an image display method with an optical lens and a display screen to overcome the above-mentioned problems in order to solve the problems of distortion of visual effects and blurred images or double images of the existing head-mounted displays.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to achieve:

An image display method with an optical lens and a display screen, comprising the following steps:

(1), virtually inverting the optical lens according to the optical parameters of the optical lens to obtain a virtual inversion lens, the object image of the inversion lens and the object image of the optical lens are inverted;

(2), according to the optical parameters of the reverse lens, calculate the distortion coefficients of the RGB three color components after the reverse lens, which are a1, a2, a3;

(3), each pixel point of a pre-display image is respectively enlarged a1, a2, a3 times of processing, obtains RGB three kinds of color components after described each pixel point distortion, forms compensation image;

(4) After the compensated image is output to the display screen for display, it passes through the optical lens and is displayed as a normal image.

Further, in step (2), the calculation method of the distortion coefficient is:

Establish an image object plane coordinate system in front of the reverse lens, where the image height l of a pixel point (x1, y1) in the object plane coordinate system is the distance from the pixel point to the center point of the coordinate system

Obtain the image heights of the RGB three color components of the pixel point after the inversion lens is L, L', L" respectively;

Then the distortion coefficients of the RGB three color components after passing through the inversion lens are:

R: $a1=\frac{L}{l};$

G: $a2=\frac{L^{\′}}{l};$

B: $a3=\frac{L^{\′\′}}{l}.$

Still further, in step (2), the distortion coefficients of different pixels are different, and the a1, a2, and a3 are constant arrays.

Still further, the step of obtaining the image heights L, L', L" of the RGB three color components of the pixel point (x1, y1) after passing through the inversion lens includes:

Simulating the object-image correspondence of the inversion lens according to the optical parameters of the inversion lens;

Output the original image height of the RGB three color components in the object plane coordinate system and the new image height after the inversion lens according to the corresponding relationship;

According to the original image height l ₀ and the new image height L ₀ , L ₀ ′, L ₀ of the RGB three color components, the functional relationship between the new image height of the RGB three color components and the original image height is fitted, that is, the RGB three color components Functional relationship between color component image height before distortion and after distortion

R: L ₀ =f(l ₀ );

G:L ₀ ′=f ₁ (l ₀ );

B:L ₀ ″=f ₂ (l ₀ );

According to the image height of the pixel point (x1, y1) in the object plane coordinate system And the functional relationship, obtain the image height of the RGB three color components after the pixel passes through the inversion lens, which are respectively L=f(l), L'=f ₁ (l), L"=f ₂ (l ).

Still further, in step (3), also include the step of filling missing point, the RGB three kinds of color components of each pixel point in the compensated image are searched respectively, if part pixel point lacks X value, then the pixel point The X value is filled, where X is one of the three color components of RGB.

Further, the method of filling the X value is: average the X values corresponding to at least two adjacent pixels to the pixel, and fill the result of the average calculation as the X value of the pixel .

Further, in step (3), after obtaining the RGB three color components after the distortion of each pixel point, before forming the compensation image, it also includes the step of processing the overlapping points, and distorting the obtained pixel points The three color components of RGB are searched separately. If there are some pixels where one of the color components has multiple values, the multiple values are processed into one value.

Preferably, the method for processing the overlapping points is to calculate the average value of the multiple values.

Based on the above-mentioned image display method with an optical lens and a display screen, the present invention also provides a display system for an image display method, including an optical lens, a display screen arranged in front of the optical lens, and an image connected to the display screen An adjustment module, the image adjustment module includes:

A virtual inversion lens unit, configured to virtually invert the optical lens according to the optical parameters of the optical lens to obtain a virtual inversion lens, the object image of the inversion lens is the same as the object image of the optical lens reversed;

A distortion coefficient calculation unit, which is used to calculate the distortion coefficients of the RGB three color components after passing through the inversion lens according to the optical parameters of the inversion lens, which are a1, a2, and a3;

The image adjustment unit is used to receive the pre-display image, and respectively amplify each pixel of the pre-display image by a1, a2, and a3 times to obtain distorted RGB three color components of each pixel to form a compensation image , output to the display screen.

Further, the image adjustment unit is further configured to search for the RGB three color components of each pixel in the compensated image before outputting the compensated image to the display screen, and fill in the missing RGB three color components; and / or,

The image adjustment unit is also used to search the obtained RGB three color components after each pixel distortion after obtaining the RGB three color components after each pixel distortion and before forming the compensation image, and to search for the overlapping RGB three color components respectively. Click to process.

Compared with the prior art, the advantages and positive effects of the present invention are: the image display method with an optical lens and a display screen of the present invention solves the problem caused by the three color wavelengths by compensating the distortion of the RGB three color components of the image respectively. Different degrees of distortion are different. If a unified standard is used for compensation, the processed image will be blurred or ghosted. By performing inverse calculation on the original image of the display according to the distortion coefficient to compensate, the distortion caused by the refraction of the image through the eyepiece can be offset, and finally presented What the user sees is a clear, undistorted image with good visual effects. In addition, the distortion coefficient is also fixed for a fixed eyepiece. Therefore, the corresponding parameters only need to be calculated once to apply to the compensation of all images output by the display. Fast and convenient.

Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the optical path of the current head-mounted display in the background technology;

Fig. 2 is the image of normal display output of monitor in the background technology;

Fig. 3 is the distorted image after passing through the eyepiece 102 in the background technology;

FIG. 4 is a schematic diagram of the separation of RGB three color components after passing through the eyepiece 102 in the background technology;

Fig. 5 is a compensated image output by the display in Embodiment 1 of the present invention;

Fig. 6 (a) is the functional relationship curve of the image height before and after distortion of the R color component in Embodiment 1 of the present invention;

Fig. 6 (b) is the functional relationship curve of the image height before and after distortion of the G color component in Embodiment 1 of the present invention;

Fig. 6 (c) is the functional relationship curve of the image height before and after the distortion of the B color component in Embodiment 1 of the present invention;

7 is a flowchart of an image display method with an optical lens and a display screen in Embodiment 1 of the present invention;

Fig. 8 is a schematic structural diagram of an embodiment of the image display system proposed by the present invention;

FIG. 9 is a schematic diagram of an image display process of the display system shown in FIG. 8 .

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment 1. This embodiment provides an image display method with an optical lens and a display screen, as shown in FIG. 7 and FIG. 8 and 9, including the following steps:

S1. Virtually reverse the optical lens according to the optical parameters of the optical lens to obtain a virtual reverse lens, the object image of the reverse lens and the object image of the optical lens are reversed;

S2. According to the optical parameters of the inversion lens, respectively calculate the distortion coefficients of the RGB three color components after passing through the inversion lens, which are a1, a2, and a3;

S3. Enlarge each pixel of a pre-display image by a1, a2, and a3 times, respectively, to obtain the RGB three color components after the distortion of each pixel, and form a compensated image;

S4. After the compensated image is output to the display screen for display, it passes through the optical lens and is displayed as a normal image.

The working principle of the image display method with an optical lens and a display screen in this embodiment is that firstly, due to the different wavelengths of the three colors of RGB, the degree of distortion is different, that is, it is reflected in different distortion coefficients. Distortion compensation is performed on the color components separately, which solves the existing problem that the processed image will be blurred or ghosted if a unified standard compensation is adopted. Secondly, by calculating the distortion coefficient before and after the distortion, the original image of the display is compensated according to the inverse calculation of the distortion coefficient, which can offset the distortion caused by the refraction of the image through the eyepiece, and finally present a clear and distortion-free image in the eyes of the user, with good visual effect , in addition, for a fixed eyepiece, its distortion coefficient is also fixed, therefore, the corresponding parameters only need to be calculated once to apply to the compensation of all images output by the display, which is fast and convenient.

It should be noted that since the RGB three color component coordinates of each pixel in the original image before distortion are coincident, the RGB three color component coordinate values of the pixel with coordinates (x1, y1) in the original image are all the same.

As a preferred embodiment, by comparing Figure 2 and Figure 3, it can be seen that the distance from some pixels to the center point of the image before and after distortion changes, that is, the value of the image height directly reflects the degree of distortion, therefore, in order to To accurately compensate the image, the distortion coefficient in this embodiment is calculated from the image height. In the step S1, the calculation method of the distortion coefficient is:

Establish an image object plane coordinate system in front of the reverse lens, where the image height l of a pixel point (x1, y1) in the object plane coordinate system is the distance from the pixel point to the center point of the coordinate system

Obtain the image heights of the RGB three color components of the pixel point after the inversion lens is L, L', L" respectively;

Then the distortion coefficients of the RGB three color components after passing through the inversion lens are:

R: $a1=\frac{L}{l};$

G: $a2=\frac{L^{\′}}{l};$

B: $a3=\frac{L^{\′\′}}{l}.$

By comparing Figure 2 and Figure 3, it can also be seen that the distortion coefficients of different pixels are different, and the closer to the center point, the smaller the change. Therefore, the distortion coefficients of pixels with different coordinates in each color component are different. If a uniform distortion coefficient is used Compensation cannot realize the compensation for the distortion of each pixel. Therefore, it is necessary to calculate the distortion coefficients of each pixel point in each color component separately to form a constant array of distortion coefficients, that is, in the step S1, the a1 , a2, a3 are constant arrays.

Since this method is ultimately applicable to industrial products, it is impossible to test the distorted image height pixel by pixel in a laboratory environment. Therefore, it is preferable to find out the functional relationship between the image height before distortion and the distorted image height in advance, and the distortion The calculation method of the image height of the RGB three color components of the rear pixel is:

Still further, the step of obtaining the image heights L, L', L" of the RGB three color components of the pixel point (x1, y1) after passing through the inversion lens includes:

Simulating the object-image correspondence of the inversion lens according to the optical parameters of the inversion lens;

Output the original image height of the RGB three color components in the object plane coordinate system and the new image height after the inversion lens according to the corresponding relationship;

According to the original image height l ₀ and the new image height L ₀ , L ₀ ′, L ₀ of the RGB three color components, the functional relationship between the new image height of the RGB three color components and the original image height is fitted, that is, the RGB three color components Functional relationship between color component image height before distortion and after distortion

R: L ₀ =f(l ₀ );

G:L ₀ ′=f ₁ (l ₀ );

B:L ₀ ″=f ₂ (l ₀ );

According to the image height of the pixel point (x1, y1) in the object plane coordinate system And the functional relationship, obtain the image height of the RGB three color components after the pixel passes through the inversion lens, which are respectively L=f(l), L'=f ₁ (l), L"=f ₂ (l ).

Since step S3 is performed, all pixels of the original image are compensated, so the coordinates of each pixel are determined. Therefore, for any pixel whose coordinates are (x ₁ , y ₁ ), its image height is: Therefore, the image height after distortion can be easily calculated through the above function formula, and then the distortion coefficient can be easily calculated.

This embodiment gives the measured functional relationship of one of the eyepieces, wherein, the curve of L ₀ =f(l ₀ ) can be seen in Figure 6(a), and the curve of L ₀ ′=f ₁ (l ₀ ) can be See Figure 6(b), the L ₀ ″=f ₂ (l ₀ ) curve can be seen in Figure 6(c), in the above three graphs, the horizontal axis represents the image height before distortion, and the vertical axis represents the distortion Image height after distortion. Use the image height l ₀ of the pixel point before distortion to calculate the image height L ₀ , L ₀ ′, L ₀ "of the RGB three color components of the pixel point after distortion, and then calculate the compensation according to the rectangular coordinate relationship Coordinate values (x ₂ , y ₂ ), (x ₂ ′, y ₂ ′), (x ₂ ″, y ₂ ″) of the RGB three-color components of the image after:

${\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>$

${\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; =</span>\frac{{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}^{<span\; class="notranslate">\; \&prime;</span>}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; =</span>\frac{{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}^{<span\; class="notranslate">\; \&prime;</span>}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>$

${\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; \&prime;</span><span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; =</span>\frac{{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}^{<span\; class="notranslate">\; \&prime;</span><span\; class="notranslate">\; \&prime;</span>}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; \&prime;</span><span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; =</span>\frac{{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}^{<span\; class="notranslate">\; \&prime;</span><span\; class="notranslate">\; \&prime;</span>}}{{\mathrm{<span\; class="notranslate">\; l</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>$

Since the distortion and dispersion value of the image is just opposite to the eyepiece of the head-mounted display, the image is displayed on the display, and then viewed through the eyepiece of the head-mounted display, the distortion and chromatic aberration can be compensated, and the final effect seen by the human eye is, It is a normal picture without any distortion as shown in Figure 2.

If the R, G, and B values in the (x1, y1) coordinate point in the original image are directly stored in their corresponding coordinate points (x ₂ , y ₂ ), (x ₂ ′, y ₂ ′) according to the above corresponding relationship, (x ₂ ″, y ₂ ″), there may be some points in the new image that do not have the correspondence of the original image, which is reflected in the image display, these pixels lack a certain color component, so in the steps (3) also includes the step of filling the missing point, the RGB three color components of each pixel point in the compensation image are searched respectively, if some pixels lack the X value, then the X value of the pixel point is filled, wherein , X is one of the three color components of RGB. The compensated image restores its true color more, avoiding the phenomenon of losing color components in the process of image processing.

As a preferred embodiment, in order to simplify the calculation method and improve the calculation speed, the average value method is preferably used in this embodiment, that is, the method of filling the X value is: the X corresponding to at least two adjacent points of the pixel point Values are averaged, and the calculation result is filled as the X value of the pixel.

In the same way, if the R, G, and B values in the (x1, y1) coordinate point in the original image are directly stored in the corresponding coordinate point (x ₂ , y ₂ ), (x ₂ ′, y ₂ ′), (x ₂ ″, y ₂ ″), then in the new image, one of the color components of some pixels may have multiple values, that is, overlapping points appear, in order not to affect the display , in the step (3), after obtaining the RGB three color components after the distortion of each pixel, before forming the compensated image, it also includes the step of processing the overlapping points, and distorting the obtained pixels The three color components of RGB are searched separately. If there are some pixels where one of the color components has multiple values, the multiple values are processed into one value.

Also as a preferred embodiment, in order to simplify the calculation method and increase the calculation speed, the average value method is preferably used in this embodiment, that is, the method for processing overlapping points is to calculate the multiple values Average calculation. By processing multiple overlapping points into one point, errors in the display output program can be prevented, so that each image output has a unique corresponding value.

Embodiment 2, based on an image display method with an optical lens and a display screen in Embodiment 1, this embodiment provides a display system for an image display method, as shown in FIGS. 8 and 9 , including an optical lens 102, The display screen 101 arranged in front of the optical lens 102 and the image adjustment module 103 connected to the display screen 101, the image adjustment module 103 includes:

A virtual inversion lens unit, configured to virtually invert the optical lens according to the optical parameters of the optical lens to obtain a virtual inversion lens, the object image of the inversion lens is the same as the object image of the optical lens reversed;

A distortion coefficient calculation unit, which is used to calculate the distortion coefficients of the RGB three color components after passing through the inversion lens according to the optical parameters of the inversion lens, which are a1, a2, and a3;

The image adjustment unit is used to receive the pre-display image, and respectively amplify each pixel of the pre-display image by a1, a2, and a3 times to obtain distorted RGB three color components of each pixel to form a compensation image , output to the display screen.

Since the compensation for the image is opposite to the distortion and dispersion when the image passes through the optical lens 102, as shown in FIG. It is a normal picture without any distortion and chromatic aberration as shown in Figure 9.

Further, the image adjustment unit is further configured to search for the RGB three color components of each pixel in the compensated image before outputting the compensated image to the display screen, and fill in the missing RGB three color components; and / or,

The image adjustment unit is also used to search the obtained RGB three color components after each pixel distortion after obtaining the RGB three color components after each pixel distortion and before forming the compensation image, and to search for the overlapping RGB three color components respectively. Click to process. By filling the missing RGB three color components and processing overlapping points in this embodiment, the compensated image can more restore its true color, avoiding the loss of color components during image processing.

This system can also be applied to near-eye display devices such as head-mounted displays, but the protection scope of the present invention does not limit the application environment of this system.

Of course, the above descriptions are not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention shall also belong to protection scope of the present invention.

Claims (10)

1. there is a method for displaying image for optical lens and display screen, it is characterized in that, comprise the following steps:

(1), according to the optical parametric of described optical lens reverse described optical lens virtually, and obtain a virtual counter-rotating lens, the image of described counter-rotating lens and the image of described optical lens reverse;

(2), according to the optical parametric of counter-rotating lens calculating the distortion factor of RGB tri-kinds of color components after described counter-rotating lens respectively, is a1, a2, a3;

(3), by each pixel of a pre-display image carry out respectively amplifying a1, a2, a3 process doubly, obtain the RGB tri-kinds of color components after described each pixel distortion, formed and compensate image;

(4), after described compensation image exports described display screen display to, normal picture is shown as through described optical lens.

2. method for displaying image according to claim 1, is characterized in that, in step (2), the computing method of distortion factor are:

Set up the image object plane coordinate system before a counter-rotating lens, wherein, in object plane coordinate system, the image height l of pixel (x1, y1) is the distance of this pixel to coordinate system central point,

The image height obtaining the RGB tri-kind color components of this pixel after counter-rotating lens is respectively L, L ', L 〞;

Then the distortion factor of RGB tri-kinds of color components after described counter-rotating lens is:

$R:a1=\frac{L}{l};$

$G:a2=\frac{L^{\&prime;}}{l};$

$B:a3=\frac{L^{\&prime;\&prime;}}{l}.$

3. method for displaying image according to claim 2, is characterized in that, in step (2), the distortion factor of different pixels point is different, and described a1, a2, a3 are constant array.

4. method for displaying image according to claim 2, is characterized in that, obtain the image height L of pixel (x1, y1) the RGB tri-kinds of color components after counter-rotating lens, the step of L ', L 〞 comprises:

The image corresponding relation of described counter-rotating lens is simulated according to the optical parametric of described counter-rotating lens;

High and the new image height after counter-rotating lens of the preimage of RGB tri-kinds of color components in object plane coordinate system is exported according to described corresponding relation;

According to the preimage height l of RGB tri-kinds of color components ₀with new image height L ₀, L ₀', L ₀the new image height that 〞 simulates RGB tri-kinds of color components about the high funtcional relationship of preimage, namely before RGB tri-kinds of color components distortion with distortion after the funtcional relationship of image height

R:L ₀＝f(l ₀)；

G:L ₀′＝f ₁(l ₀)；

B:L ₀〞＝f ₂(l ₀)；

According to the image height of pixel (x1, y1) in described object plane coordinate system and described funtcional relationship, obtain the image height of the RGB tri-kind color components of this pixel after counter-rotating lens, be respectively L=f (l), L '=f ₁(l), L 〞=f ₂(l).

5. the method for displaying image according to any one of claim 1-4 claim, it is characterized in that, the step also comprising before compensating image and fill up and omit point is formed in step (3), the RGB tri-kinds of color components compensating each pixel in image are searched respectively, if occur, partial pixel point lacks X value, then fill up the X value of this pixel, wherein, X is the wherein a kind of of RGB tri-kinds of color components.

6. method for displaying image according to claim 5, it is characterized in that, to the method that X value is filled up be: the X value corresponding with at least two pixels of this pixel phase neighbour is averaging calculating, and the result being averaging calculating is filled up the X value into this pixel.

7. the method for displaying image according to any one of claim 1-4 claim, it is characterized in that, in step (3), after obtaining the RGB tri-kinds of color components after described each pixel distortion, formed and compensate before image, also comprise and carry out for overlap point the step that processes, the RGB tri-kinds of color components after each pixel distortion obtained are searched respectively, if occur partial pixel point wherein a kind of color component there is multiple value, then the plurality of value is processed into a value.

8. method for displaying image according to claim 7, is characterized in that, the described method carrying out processing for overlap point is that described multiple values are carried out calculating of averaging.

9. the display system of the method for displaying image of an application rights requirement according to any one of 1 to 8, it is characterized in that, comprise optical lens, be arranged at the display screen before optical lens and connect the image adjustment module of described display screen, described image adjustment module comprises:

Virtual counter-rotating lens unit, for the described optical lens that reverses virtually according to the optical parametric of described optical lens, obtain a virtual counter-rotating lens, the image of described counter-rotating lens and the image of described optical lens reverse;

Distortion factor computing unit, for calculating the distortion factor of RGB tri-kinds of color components after described counter-rotating lens respectively according to the optical parametric of counter-rotating lens, is a1, a2, a3;

Image control unit, for receiving pre-display image, carries out each pixel of described pre-display image amplifying a1, a2, a3 process doubly respectively, obtains the RGB tri-kinds of color components after described each pixel distortion, is formed and compensate image, export described display screen to.

10. display system as claimed in claim 9, it is characterized in that, described image control unit also for searching respectively the RGB tri-kinds of color components compensating each pixel in image before exporting described compensation image to described display screen, fills up RGB tri-kinds of color components of omission; And/or,

Described image control unit also for after the RGB tri-kinds of color components after obtaining described each pixel distortion, is formed before compensating image, searches respectively, process overlap point the RGB tri-kinds of color components after each pixel distortion obtained.