TWI400689B - A method of displaying a three - dimensional image - Google Patents

Description

Method for displaying three-dimensional image

The invention provides a method for displaying a three-dimensional image, which is directed to a ghost image phenomenon generated by a naked-eye three-dimensional image display which is displayed separately from a visual display, and provides a method for completely displaying ghost image display, and the naked eye for adjacent visual display. The phenomenon of ghosting caused by the three-dimensional image display proposes a method for reducing ghost image display to achieve the purpose of improving the depth of the virtual image.

At present, the parallax barrier type three-dimensional image display (Parallax Barrier three-dimensional image display) and the lens-grating three-dimensional image display (Lenticular Lens three-dimensional image display) are the naked-eye three-dimensional image display on the market (Goggle Free three-dimensional image Display, whose official term is Auto-Stereoscopic Display, is the mainstream product. The three-dimensional image display technology of the two naked-eye three-dimensional image display mainly uses a synthetic image displayed on the flat display (the synthesized image is composed of left and right stereo images with parallax effect) through a parallax barrier ( The separation of the Parallax Barrier) or the Lenticular Lens Sheet allows the viewer to view the left and right images of the viewer's left and right eyes at a specific position, and finally pass the three-dimensional vision of the human brain. Synthesize to achieve a three-dimensional effect. For a description of the relevant optical principles, see U.S. Pat. No. 725,567, U.S. Pat. No. 2,012,995, U.S. Pat. No. 2,063,985, U.S. Pat. No. 4,717,949, U.S. Pat. No. 5,113,213, U.S. Pat. No. 5,315,377.

With the enlargement of flat-panel displays, for multi-view, The need for a multi-viewer (Multiple Viewers) naked-eye three-dimensional image display was also created. See U.S. Pat. No. 6,064,424, U.S. Pat. No. 7,317,494 B2 for techniques of multi-view and conventional representations of the majority. Generally, the two naked-eye three-dimensional image displays mentioned above have the common phenomenon of interference between Moiré and Ghost Image, so as to seriously affect the quality and effect of the three-dimensional image. The above two patents are effectively solved by using a tilted parallax barrier (Slanted Parallax Barrier, see US Pat. No. 7,317,494 B2) and a tilted lens grating (refer to US Pat. No. 6,064,424). The problem of interference with gray lines is achieved to improve the quality of the three-dimensional image. However, there is no solution to the problem of ghosting. The so-called ghosts, that is, when the left and right images are not completely separated, will cause the left eye not only to see the left image, but also to see a considerable degree of right image (ie ghost). On the contrary, the right eye is also true. When the ghost phenomenon occurs seriously, for the left and right images with strong parallax effect, the human brain cannot make the correct correspondence between the left and right images, so as to synthesize the correct three-dimensional vision, thus causing ghosting phenomenon. produce. In order to avoid this phenomenon, the multi-view Auto-Stereoscopic Display for Multiple Viewers, which are mostly viewed by most viewers, are only suitable for displaying left and right images with small parallax. Therefore, the problem of serious three-dimensional effects is seriously insufficient. That is to say, the virtual three-dimensional depth that the viewer can perceive is obviously insufficient compared with the actual visual experience of the day, which is also a common problem of the naked-eye three-dimensional image display currently available in the market. Hereinafter, the cause of the ghost phenomenon will be described by taking a parallax barrier type three-dimensional image display and an appropriate number of views as an example.

As shown in Figure 1, it is a schematic diagram of five-view image generation and synthesis. Typically, a composite image of multiple views can be produced by photography, or by a three-dimensional animation. Hereinafter, an example of generating a five-view image by static photography will be described. The five-view images V ₀ , V ₁ , V ₂ , V ₃ , and V _{4 are} generated by five cameras placed at appropriate positions and equally focused to the V _C point while being equally spaced. Acquired. Therefore, the five-view images V ₀ , V ₁ , V ₂ , V ₃ , and V ₄ have the effects of sequentially varying parallax. That is, the images of two adjacent scenes, such as (V ₄ , V ₃ ), (V ₃ , V ₂ ), (V ₂ , V ₁ ), (V ₁ , V ₀ ), may each be configured as a pair. The three-dimensional image of the left and right. In addition, images separated by two views, such as (V ₄ , V ₂ ), (V ₃ , V ₁ ), (V ₂ , V ₀ ), may also be configured as another three-dimensional image of the left and right. For the convenience of the following description, for the naked-eye three-dimensional image display, the adjacent two-view image is used to provide a pair of left and right three-dimensional images, so that it is a naked-eye three-dimensional image of the adjacent view display. Display, this method is the mainstream of the current naked-eye three-dimensional image display design; and for the use of two-view images to provide a pair of left and right three-dimensional images, it is the naked eye of the visual display. Three-dimensional image display.

In addition, for the synthesis of the multi-view image, the five scenes V ₀ , V _{1 are} sequentially arranged in the order of V ₀ to V _{4 in} the order of the change of the parallax effects, in order of sub-pixels. The image of the last pixel of V ₂ , V ₃ , and V ₄ is configured to form a unit of Sequential Sub-Pixel Arrangement 118, and the arrangement of the unit 118 is repeated cyclically to obtain one or five 5-View Combined Image 112. The numbers 0, ₁ , ₂ , ₃ , and ₄ displayed in the sub-pixel 111 correspond to the sub-pixel images in the five-view images V ₀ , V ₁ , V ₂ , V ₃ , and V ₄ , respectively. The method of sequentially arranging the unit 118 and repeating the cyclic arrangement is described in detail in the above patent, and details are not described herein again.

As shown in FIG. 2, it is a schematic diagram of the optical principle of a five-view parallax grating type three-dimensional image display. The conventional Parallel Barrier Three-Dimensional Image Display with 5-View 100 is mainly composed of a flat panel display 110 and a parallax barrier 120. The five-view synthesized image 112 is filled in the position of the last pixel (Sub-Pixel) 111 of the flat display 110 (where R, G, and B are the colors of the sub-pixels, and ΔW is the sub-pixel. Width), through the parallax barrier 120 at a suitable position L _P (the parallax barrier 120 is formed by a plurality of slits 121 having an appropriately sized opening L _D ), at an optimal viewing distance L _BVD and At the optimal viewing positions P ₀ , P ₁ , P ₂ , P ₃ , and P ₄ , the five-view images V ₀ , V ₁ , V ₂ , V ₃ , and V _{4 are} respectively viewed. That is, for any single slit 121 on the parallax barrier 120, the slit allows the sub-pixels to sequentially arrange the sub-pixel images in the unit 118 to be transmitted to the optimal viewing position P ₀ , P ₁ , P ₂ , P ₃ , and P ₄ are the viewing positions of the viewer's eyes. Therefore, when the parallax barrier 120 is designed to adopt an adjacent view display method, the distance between adjacent two optimal viewing positions (eg, P ₄ , P ₃ ), that is, the left eye (P _{4 )} ) The distance between the eyes of the right eye (P ₃ ) is L _ED0 . That is, the left and right eye systems each view an image of an adjacent view. In addition, when the parallax barrier 120 is designed to use the visual display method, the distance between the two optimal viewing positions (such as P ₂ , P ₀ ) can be separated, that is, the left eye (P ₂ ) and The distance between the eyes of the right eye (P ₀ ) is L _ED1 . That is, the left and right eye systems each view an image of the separated view. Usually, the distance between the eyes L _ED0 and L _{ED1 is} set at 6 cm or so to meet the needs of most people. In addition, for most people's viewing designs, other optimal viewing positions P ₀ , P ₁ , P ₂ , P ₃ , P ₄ (not shown) are repeatedly provided at different viewing distances L _BVD at different positions. . Therefore, according to the above requirements, the width ΔW of the sub-pixel, the opening L _{D of the} slit 121, the device position L _{P of the} parallax barrier 120, the optimal viewing distance L _BVD , and the optimal viewing position P _{0 .} Parameters such as P ₁ , P ₂ , P ₃ , and P ₄ are optimized by theoretical calculations.

As shown in FIG. 3, it is a schematic diagram of a single viewing range of a five-view parallax barrier three-dimensional image display. For the single eye of the viewer, at the best viewing position (such as P ₂ ), all the corresponding times are received because the maximum angle of view (only the viewing angle θ _{2 of the} single pixel 111' is shown) The light source emitted by the pixel. Therefore, the brightest second scene image V _{2 can be} viewed. When the viewing position is shifted to When it receives the illumination angle of all corresponding sub-pixels, that is, the viewing angle , relatively small, the second scene view image V _{2 is} gradually darkened. When the viewing position is shifted to P ₁ or P ₃ , it is completely shielded, that is, the second view V ₂ cannot be viewed. Therefore, L _VZ2 can be defined as the viewing range of the second view image V ₂ .

Due to the spatial composition of the parallax barrier and the planar display sub-pixels, they all have geometric features of equal spacing. Therefore, for all the optimal viewing positions P ₀ , P ₁ , P ₂ , P ₃ , P ₄ , they can respectively view the visible range of the images V ₀ , V ₁ , V ₂ , V ₃ , V ₄ , as shown in FIG. 4 . As shown, they all have the same size and overlap each other. That is, there is a _{phenomenon in} which L _VZ0 = L _VZ1 = L _VZ2 = L _VZ3 = L _VZ4 and each adjacent visible range has an overlap. This overlap is the most fundamental cause of ghosting.

Based on the shortcomings of solving the above-mentioned conventional techniques, that is, for the parallax barrier type and the lens grating type three-dimensional image display (hereinafter referred to as the naked-eye three-dimensional image display), the three-dimensional effect caused by the ghost phenomenon is insufficient. The present invention is directed to a ghost image phenomenon generated by a naked-eye three-dimensional image display that is displayed separately from a visual display, and a naked-eye three-dimensional image display for a neighboring visual display is proposed. The resulting ghost phenomenon proposes a method for reducing ghost image display to achieve the purpose of improving the depth of the virtual image. Hereinafter, the naked eye type three-dimensional image display using the adjacent view display and the separated view display can be used to solve the ghost effect by the four-view and five-view images.

Firstly, for the naked-eye three-dimensional image display using adjacent view display, a multi-view brightness modulation and alternate display method is proposed to effectively reduce ghost phenomenon. Hereinafter, the efficacy will be described.

As shown in FIG. 5, it is a schematic diagram of a four-view brightness modulation method. For a four-view composite image 112, a Combined Image with Odd Views Modulated in Brightness 113 can be generated by a Method of Brightness Modulation. Combined Image with Even Views Modulated in Brightness 114. The so-called brightness modulation method 300 is to adjust the brightness of the original image 112 so that the brightness of the desired scene image can be significantly lower than the brightness of the adjacent scene image. For example, for the image 113 synthesized by the singular brightness modulation, the brightness of all the singular images in the image 112 synthesized by the original four scenes is simultaneously or separately multiplied by an appropriate value between 0.0 and 1.0. M _o (hereinafter referred to as the brightness modulation value); and for the image 114 synthesized by the temporal brightness modulation, the brightness of all the even view images in the image 112 synthesized by the original four scenes is also simultaneously or each do not multiplied by a suitably between 0.0 and 1.0 of the luminance modulation value M _e. Wherein, M _o and M _e may be the same or different values, and may also be a value of 0.0.

As shown in FIG. 6, it is a schematic diagram of an alternate display method. The method of Alternating Display 400 is a method for synthesizing the image 113 of the singular brightness modulation and the image 114 combined with the brightness modulation of the illuminating scene, and displaying the two images alternately at different time points. . For example, when t=T ₁ , the image 113 of the odd-view brightness modulation is displayed, and when t=T ₂ , the image 114 of the even-view brightness modulation is displayed. In this way, the images 113, 114 of the odd and even view brightness modulation are alternately displayed alternately.

Therefore, as shown in FIG. 7 , a schematic diagram of the visible range of each odd and even view is displayed when the odd-view brightness modulation composite image is displayed. When t=T ₁ , the image 113 synthesized by the singular brightness modulation displayed on the flat display 110 is compared with the even view (V ₀ , V ₂ ) due to the aforementioned brightness modulation. The brightness of the singular view (V ₁ , V ₃ ) is relatively dark (eg, M _o = 0.25) or even zero (when M _o = 0.0). Therefore, within the viewable range of the view (L _VZ0 , L _VZ2 ), the strange view viewed is a relatively weak image.

In addition, as shown in FIG. 8, it is a schematic diagram showing the visible range of each odd and even view when the combined view brightness is modulated. When t=T ₂ , the image 114 of the even view brightness modulation synthesized on the flat display 110 is compared with the brightness of the odd scene (V ₁ , V due to the aforementioned brightness modulation). ₃ ), the brightness of the even view (V ₀ , V ₂ ) is relatively dark (such as _Me = 0.25), or even zero (when _Me = 0.0). Therefore, in the visible range of the singular view (L _VZ1 , L _VZ3 ), the even view viewed is a relatively weak image.

Therefore, when the viewer's left and right eyes are each within the visible range of the adjacent odd and even view, in order to view the three-dimensional image, due to the brightness modulation and the alternate display function of the present invention, Relatively reducing the brightness of adjacent view images, the phenomenon of relatively reducing ghosts can be achieved. Finally, the viewer can combine the adjacent odd and even views displayed by the time difference into a three-dimensional image through the visual effect of the visual persistence. Of course, as shown in FIG. 6, if the time difference T _F (i.e., T _F = T _{2 -} T ₁ ) of the alternate image display is too long, image flickering may occur. Another definition of the screen update frequency F _r (Screen Refresh Rate), its relationship with T _F is F _r =1 / T _F . In other words, when the picture update frequency F _r is too low, repeatedly displaying the odd and even view brightness modulated images 113, 114 will cause the image to flicker. Generally, when F _r = 120 Hz, the phenomenon of the flicker can be completely removed. Further, since the luminance modulation of the present invention, their modulation of the modulation value M _o, M _e, can be based with a frame rate F _r, to make a suitable adjustment of the set, a frame rate F _r such that in a relatively At low frequencies (such as 75~85Hz, this frequency is the highest picture update frequency that can be provided by general low-level flat panel displays), and it can also achieve low ghosting and flicker-free effects.

The above is a description of the multi-view brightness modulation and alternate display mode for the parallax barrier having an even view (four-view). For a parallax barrier with an odd view, the following is an example of a five-view image.

As shown in FIG. 9, it is a schematic diagram of a five-view brightness modulation method. by Therefore, the brightness modulation of the present invention mainly modulates the relative brightness of adjacent scenes, and therefore cannot be directly applied to an application with an odd view. For example, on the image 113 of the singular brightness modulation synthesis, for the sub-pixel image 115 of the zeroth view, the sub-pixel image 115' of the other zeroth view is due to the sequential arrangement relationship. The brightness modulation is reduced to reduce the brightness, but the sub-pixel image 116 adjacent to the first view and the sub-pixel image 117 of the fourth view are generated by the non-brightness modulation, and the zeroth view is generated. The phenomenon of ghosts.

As shown in FIG. 10, it is a schematic diagram of a five-view brightness modulation improvement method. For the above-mentioned odd view, the application of the present invention is not applicable, and one of the most edge views (such as the zeroth or the fourth view) may be sacrificed to make it into an even view, and then the brightness modulation process of the present invention is performed. It can also reduce the effect of ghosting.

In the following, for a naked-eye three-dimensional image display using a separate view display, a multi-view brightness zero-modulation and visual position-dependent display method is proposed to completely solve the phenomenon of ghosting. Hereinafter, the efficacy will be described.

As shown in FIG. 11, it is a schematic diagram of a four-view brightness zero modulation method. As the method of brightness modulation described above, for a four-view synthesized image 112, through a method of brightness zero-modulation 300', an odd-view brightness zero-modulation composite image 113' can be generated, and an even view Scene brightness zero modulation composite image 114'. The image 113' of the odd-vision brightness zero-modulation composite image is obtained by multiplying the brightness of all the odd-view images in the image 112 synthesized by the original four-view scene by a brightness modulation value of M _o = 0.0. That is, to block all the images of the singular view. In addition, for the image 114' of the even-view luminance zero-modulation composite image, the brightness of all the even-view images in the image 112 synthesized by the original single four-view scene is multiplied by a brightness adjustment of a Me _e = 0.0. Variable value. That is, to block all the images of the even view.

As shown in FIG. 12, it is a schematic diagram of a view-dependent display method. Different from the foregoing alternate image display method, the Viewing Position Dependent Displaying Method 400' displays the image 113' of the odd-vision brightness zero-modulation composite according to the viewing position of the viewer's eyes. , or the image of the scene brightness brightness zero modulation composite image 114'. For example, when t=T(P _e ), that is, the viewing position of the left and right eyes of the viewer is within the visible range of the adjacent two-view, the image of the odd-vision brightness zero-modulation composite is displayed. 113'; and when t=T(P _o ), that is, the viewing position of the left and right eyes of the viewer is within the visible range of the adjacent two singular scenes, the zero-tone modulation of the even-view brightness is displayed. Image 114'.

Therefore, as shown in FIG. 13, a schematic diagram of the visible range of each odd and even view is displayed when the odd-view luminance zero-modulation composite image 113' is displayed. When t=T(P _e ), for the image 113′ of the odd-view luminance zero-modulation synthesized on the flat display 110, the odd-view (V ₁ , The brightness of V ₃ ) becomes a state of zero (M _o = 0.0). Therefore, when the viewer's left and right eyes are within the visible range (L _VZ0 , L _VZ2 ) of the adjacent two views (V ₀ , V ₂ ), the viewed singular view is completely obscured. Image. Therefore, it can achieve the effect of zero ghost.

In addition, as shown in FIG. 14, a schematic diagram showing the visible range of each odd and even view when the even view brightness is zero-modulated composite image is displayed. When t=T(P _o ), for the image 114' of the even-view luminance zero-modulation synthesized on the flat display 110, due to the aforementioned zero-modulation of the brightness, the even view (V ₀ , The brightness of V ₂ ) is in a state of zero (M _e =0.0). Therefore, when the viewer's left and right eyes are within the visible range (L _VZ1 , L _VZ3 ) of the adjacent two singular views (V ₁ , V ₃ ), the viewed even view is completely obscured. Image. Therefore, it can achieve the effect of zero ghost.

Of course, the above-mentioned apparent position dependent display method 400' needs to include a technique of a Recognition of Viewing Position. That is, through the visual position recognition technique, the position of both eyes of the viewer can be detected to correctly display the odd and even view luminance zero-modulated composite images 113', 114'. The visual position recognition technology can be a passive identification method, that is, through the judgment of the viewer, the user can select and display the appropriate odd and even view brightness zero modulation composite images 113', 114'. Alternatively, in an active identification mode, the position of the eyes of the viewer can be detected by means of a machine detection to automatically and correctly display the odd and even view brightness zero-modulated composite images 113', 114'. For the active view location identification technology, refer to the Republic of China patent application number: 097128441, which will not be repeated here.

For a parallax barrier with an odd view, the following is a description of the zero modulation method using a five-view image as an example.

As shown in FIG. 15, it is a schematic diagram of a five-view brightness zero modulation improvement method. As described above, the zero-modulation of the brightness of the present invention mainly modulates the relative brightness of adjacent scenes, and therefore cannot be directly applied to an application with an odd view. However, one of the most edge views (such as the zeroth or the fourth view) can be sacrificed to make it an even view, and then the effect of zero ghost can be achieved by the processing of the brightness zero modulation as described above.

In summary, although the present invention has been described only for the application of a tilted parallax barrier, the principles are also applicable to other non-tilted parallax barriers, non-tilted lens gratings, and tilted lens gratings.

100‧‧‧ Five-view parallax grating three-dimensional image display

110‧‧‧ flat panel display

111, 111’‧‧‧ pixels

112‧‧‧Multi-view synthesis image

113‧‧‧Similar scene brightness modulation composite image

113'‧‧‧Similar brightness brightness zero modulation composite image

114‧‧‧Photographing of the brightness of the scene

114’‧‧‧Immediate view of zero-tone modulation

115, 115'‧‧‧Secondary visual image

116‧‧‧Secondary image of the first scene

117‧‧‧second visual image of the fourth scene

118‧‧‧ pixels are arranged in sequence

120‧‧‧Disparity grating

121‧‧‧Slit opening on parallax barrier

300‧‧‧Method of brightness modulation

300’‧‧‧Method of brightness zero modulation

400‧‧‧Alternative display method

400'‧‧‧ Dependent position display method

V ₀ , V ₁ , V ₂ , V ₃ , V ₄ ‧‧‧ Five-view images with parallax

Subpixel images in ₀ , ₁ , ₂ , ₃ , 4‧‧‧V ₀ , V ₁ , V ₂ , V ₃ , V ₄

V _C ‧‧‧The focus of the camera

P ₀ , P ₁ , P ₂ , P ₃ , P ₄ ‧ ‧ ‧ Best viewing position for five-view images

L _p ‧‧ ‧ position of the parallax barrier

L _D ‧‧‧Slit opening on the parallax barrier

L _BVD ‧‧‧Best viewing distance

L _ED0 , L _ED1 ‧‧‧ spacing between eyes

L _VZ0 , L _VZ1 , L _VZ2 , L _VZ3 , L _VZ4 ‧‧‧ Viewable range of single view images

θ ₂ ‧‧‧ at the best viewing position P ₂ , the angle of view of the eye to all corresponding pixels

‧‧‧In other viewing positions , the angle of view of the eye to all corresponding pixels

M _o , M _e ‧‧‧ brightness modulation value

R, G, B‧‧‧ pixels color

△W‧‧‧ times the width of the pixels

T ₁ ‧‧‧ shows the time when the singular brightness is modulated to synthesize the image

T ₂ ‧‧‧ shows the time when the brightness of the scene is modulated

T _F ‧‧‧ alternating image display time difference, T _F =T ₂ -T ₁

T _F ‧‧‧Fast update frequency, F _r =1/T _F

T(P _e )‧‧‧The position of the left and right eyes of the viewer is in the state of being within the visible range of the adjacent two views

T(P _o )‧‧‧ The position of the left and right eyes of the viewer is in the state of being within the visible range of the adjacent two vistas

Figure 1 is a schematic diagram of five-view image generation and synthesis.

2 is a schematic diagram showing the optical principle of a five-view parallax barrier type three-dimensional image display.

FIG. 3 is a schematic diagram showing a single viewing range of a five-view parallax barrier three-dimensional image display.

FIG. 4 is a schematic diagram showing the visual range of each view of the five-view parallax barrier type three-dimensional image display.

FIG. 5 is a schematic diagram of a four-view brightness modulation method.

Figure 6 is a schematic diagram showing an alternate display method.

FIG. 7 is a schematic diagram showing the visible range of each odd and even view when the odd-view brightness modulation composite image is displayed.

FIG. 8 is a schematic diagram showing the visible range of each odd and even view when the combined view brightness is modulated.

FIG. 9 is a schematic diagram of a five-view brightness modulation method.

FIG. 10 is a schematic diagram showing a modified method of five-view brightness modulation.

FIG. 11 is a schematic diagram of a four-view luminance zero modulation method.

FIG. 12 is a schematic diagram showing a visual position dependent display method.

FIG. 13 is a schematic diagram showing the visible range of each odd and even view when the odd-view luminance zero-modulation composite image is displayed.

FIG. 14 is a schematic diagram showing the visible range of each odd and even view when the even view brightness is zero-modulated composite image.

Figure 15 is a schematic diagram of a five-view brightness zero modulation improvement method.

113'‧‧‧Similar brightness brightness zero modulation composite image

114’‧‧‧Immediate view of zero-tone modulation

400’‧‧‧ Depending on the location dependent display method

Claims (11)

A method for displaying three-dimensional images is to solve the phenomenon of ghosts generated by multi-view three-dimensional image display, and proposes a method for completely solving ghost images, which is mainly composed of the following methods: a method of zero-modulation of brightness For the odd and even view images in a multi-view synthetic image, a brightness zero-modulation process is performed to generate an image of the odd-view brightness zero-modulation synthesis, and the zero-intensity of the one-view brightness is synthesized. The image and the method for viewing the position dependent display include a technique for visually recognizing the position of the viewer to detect the position of the eyes of the viewer, and displaying the position according to the position of the eyes. An image in which the odd-view brightness is zero-modulated, or an image in which the brightness of the scene is zero-modulated. The method for displaying a three-dimensional image according to the first aspect of the patent application, wherein the multi-view synthesis image is a unit of a single scene image having a sequential parallax change effect, sequentially arranged in units of sub-pixels. And repeating the arrangement of the arrangement of the units. The method of displaying a three-dimensional image according to claim 1, wherein the generation of the odd-vision luminance zero-modulation composite image is the brightness of all the odd-view images in the multi-view composite image, Multiply by a brightness modulation value, which is a value of 0.0. The method of displaying a three-dimensional image according to claim 1, wherein the generation of the zero-modulation composite image of the even-view brightness is the brightness of all the even-view images in the multi-view synthesized image, Multiply by a brightness modulation value, which is a value of 0.0. For example, the method of displaying the three-dimensional image described in the first item of the patent scope, The technique for visually recognizing the position can be a passive identification method, that is, through the judgment of the viewer, the user can select and display an appropriate odd and even view brightness zero-modulated composite image, or can be an active identification. The method is to detect the position of the viewer's eyes through a machine detection method, and automatically and correctly display the odd and even view brightness zero-modulation composite image. The method of displaying a three-dimensional image according to claim 1, wherein the three-dimensional image displayed by the multi-view three-dimensional image display can be composed of two scene images. A method for displaying a three-dimensional image is to propose a method for reducing ghosts for a ghost phenomenon generated by a multi-view three-dimensional image display, which is mainly composed of the following methods: a method of brightness modulation, which is a The multi-view synthetic image of the odd and even view images is processed by a brightness modulation to generate an image of the singular brightness modulation and the image combined with the modulation of the brightness of an even view; and an alternation The display method is a process of alternately displaying an image by synthesizing the image of the singular brightness modulation and the image synthesized by the modulation of the brightness of the illuminating scene. The method for displaying a three-dimensional image according to claim 7, wherein the multi-view composite image is sequentially arranged by a plurality of single-view images having the effects of sequentially varying parallax changes. And repeating the arrangement of the arrangement of the units. The method for displaying a three-dimensional image according to claim 7, wherein the generation of the singular brightness modulation composite image is the brightness of all the singular images in the multi-view composite image, and multiplied simultaneously Multiplying a brightness modulation value, or multiplying each by a different brightness modulation value, the brightness modulation value is It is between 0.0 and 1.0 and contains a value of 0.0. The method of displaying a three-dimensional image according to claim 7 , wherein the generation of the brightness of the even-view brightness modulated image is performed by multiplying the brightness of all the even-view images in the multi-view synthesized image. The brightness modulation value is multiplied by a brightness modulation value, and the brightness modulation value is between 0.0 and 1.0 and includes a value of 0.0. The method for displaying a three-dimensional image according to claim 7, wherein the three-dimensional image displayed by the multi-view three-dimensional image display can be composed of two adjacent scene images.