TWI405179B - A large naked eye 3D image display device - Google Patents

Abstract

The present invention relates to a large-scale naked eye 3D image display apparatus, which is composed of multiple naked eye 3D image display apparatus units. The single naked eye 3D image display apparatus unit is designed for use in 3D image display conditions of disparate views, and utilizes a vertical parallax barrier and a grey scale modulated even view to compose images, so that a 3D image without ghost images, with natural vision depth, high definition and large dimensions may be provided through an image segmentation and display method.

Description

Large naked eye type 3D image display device

The invention relates to a large naked-eye 3D image display device, which is mainly composed of a plurality of naked-eye 3D image display device units, and the single naked-eye 3D image display device unit is designed with 3D image display conditions separated by a view. It mainly uses a vertical parallax barrier to synthesize images with a gray-scale modulated even-numbered view, and provides a ghost-free, natural visual depth, high image quality, and large size through a method of image sub-division and display. 3D image.

For the technique of displaying a multi-view 3D image using a conventional parallax barrier or a Lenticular Lens Sheet, a 3D image display with an adjacent view is adopted. The problem of serious ghosting (see the Republic of China patent application number: 097135421), the 3D images that can be provided, all have serious phenomena of visual depth. For example, all multi-view 3D image displays on the market, even though their screen size has exceeded 40", can not overcome the ghost problem, the visual depth of the 3D image can be kept within 10~20 cm. Seriously violated the experience of daily vision, that is, for any physical object with any depth, the visual depth of the 3D image can be compressed to within 10~20 cm, and it is impossible to provide 3D images with the ratio of the real thing to the natural 3D visual effects.

Secondly, compared with the visual depth effect of 3D images provided by 3D glasses, the “floating” effect that 3D glasses can easily present (such as things from the screen) Flying to the front), the "floating" capability of all multi-view 3D image displays on the market is beyond the reach of the screen (they can only "float" the visual distance of the screen, but only a few centimeters). In addition, due to the use of a general flat panel display (such as LCD, plasma display) to display multi-view composite images (such as eight horizons), because the display only has limited image resolution (such as 1920x1080 pixels), making a single The quality of the visual image is inferior (such as 240x135 pixels), which causes the seriousness of the 3D image to be seriously insufficient. Moreover, since the display only has a limited screen size (such as 42"), the spatial image of the 3D image is insufficient (for example, 3D images of a human body size cannot be displayed). Therefore, the multi-view 3D image technology as described above. , can not meet the needs of no ghosts, natural visual depth, high image quality, and large size 3D images.

As described above, for the 3D image generated by the general parallax barrier type 3D image display, there is a lack of visual depth, fineness, and lack of spatial sense. According to the display method stated in the Republic of China Patent Application No.: 097135421, The visual view is the design of the 3D image display, and the use of the brightness modulated even-numbered view synthetic image can accurately solve the ghost phenomenon, that is, solve the problem of insufficient visual depth. Therefore, according to this method, since the visual depth of the 3D image can be arbitrarily provided, in addition to providing a 3D image of a ratio of the size of the object, a natural 3D visual effect can be achieved, and a "floating" that rivals the 3D glasses can be produced. The effect is to achieve the special effects of 3D images flying from the screen to the front.

In addition, for the lack of fineness and lack of spatial sense, as shown in Fig. 1, the original picture S with high resolution can be cut into MxN equal parts (such as 4x4) by using the method of sub-picture segmentation. S _ij (where 0≦i≦M-1,0≦j≦N-1). As shown in FIG. 2, the images of all the sub-pictures S _ij are respectively displayed on the display combination system 10 composed of the MxN display units 20, so that the above-mentioned fineness and lack of spatial feeling can be solved.

Therefore, as shown in FIG. 3, a large naked-eye 3D image display device 100 of the present invention is mainly composed of a plurality of naked-eye 3D image display device units 200, and the single naked-eye 3D image display device unit 200 is In the design of 3D image display conditions, the vertical view is mainly used to synthesize images with a gray-scale modulated even-numbered view, and a ghost-free image can be provided through a method of image segmentation and display. Natural visual depth, high image quality, and large 3D images. Hereinafter, a single naked-eye type 3D image display device unit 200 may be separately configured depending on the components to be used.

4 and 5 are schematic views showing the first configuration of a single naked-eye 3D image display device unit of the present invention. The single naked-eye 3D image display device unit 200 mainly displays a static 3D image, which is composed of a light-resistant reflective transparent component 210, a vertical parallax barrier component 220, and a gray-scale modulated even-numbered view synthesis image slide. The component 230, a backlight module component 240, and a unit device mechanism 290 are formed. The light-reflecting transparent element 210 is composed of a light-transparent material of a suitable thickness, and a light-reflecting film is disposed on the surface thereof to reduce image interference caused by ambient light reflection, and is disposed in the device mechanism 290. The outermost side (in side view) is used to isolate environmental pollution (such as dust and rain). The vertical parallax barrier element 220 is formed of a light transparent material of a suitable thickness, and a vertical parallax barrier is printed on the material. The gray-scale modulated even-view view synthetic image slide element 230 is composed of a light-transparent material of appropriate thickness, and a secondary image of a gray-scale modulated even-view synthesized image is printed on the material. V _ij (as described later). In addition, the vertical parallax barrier element 220 and the grayscale modulated even-numbered view synthesis image projection sheet element 230 may be combined into one, that is, on both sides of the same transparent optical material of appropriate thickness. A vertical parallax barrier is printed, and a sub-picture image V _{ij of} a gray-scale modulated even-view synthesis image is printed. The backlight module component 240 is configured to generate a uniform white light source, and is composed of a light diffuser 242, a white light source 246, and a light reflecting sheet 248. The light diffusing sheet 242 can scatter the light reflected by the white light source 246 and the light reflected by the light reflecting sheet 248 into a uniform light. The white light source 246 can be composed of a white light LED or other light source that can generate a white light source. The unit device mechanism 290 is a black box type mechanism, except for the device and the fixing of the anti-light reflective transparent element 210, the vertical parallax barrier element 220, the gray-scale modulated even-numbered view synthesis image slide element 230, In addition to the backlight module element 240, it can be combined with other unit device mechanisms 290 to form a large naked-eye 3D image display device 100 according to the present invention.

As shown in FIG. 6 to FIG. 9 , it is a schematic diagram of a gray-scale modulated even-numbered view synthesis image. For the acquisition of even-view images (hereinafter, the eight-view scene is taken as an example), as shown in Figure 6, it can be created by photography (or 3D drawing) to generate eight scenes, even scenes. Original images V ₀ , V ₂ , V ₄ , V ₆ . The method of photographing uses a plurality of cameras to wait for the camera to be placed at a distance, to focus on the V _C point, and to simultaneously capture the original images V ₀ , V ₂ , V ₄ , V of the even view. ₆ . Therefore, the original images V ₀ , V ₂ , V ₄ , and V ₆ have an effect of sequentially changing the parallax. In addition, for the eight scenes, the original images V ₁ , V ₃ , V ₅ , and V _{7 of the} singular view are all images of a gray scale to conform to the Republic of China patent application number: 097135421. The requirements for the brightness modulation process stated. Hereinafter, the process of replacing the original image of the singular scene with the gray-scale image is specifically referred to as a gray-scale modulation process, and the image synthesized by the image is called a gray-scale modulated singular composite image. The so-called grayscale image refers to a gray image with no color, that is, all R, G, and B pixels of the image have the same value (such as 0 to 255), and the value is defined as a grayscale value. Therefore, when the grayscale value is 0, it becomes a full black screen, and when it is 255, it becomes an all white screen.

In addition, the so-called odd and even view here is only defined for the aspect description, and can also be used interchangeably, that is, the view generated by the photograph is the original view of the original view, and the gray scale image is the original view of the view. The synthesized image is called a gray-scale modulated even-view synthetic image. Therefore, the so-called gray-scale modulation and even-view synthesis image refers to the gray-scale modulation and singularity of the image after the processing of the gray-scale modulation and synthesis of the odd-numbered and even-view original images. Synthetic image, or gray-scale modulated even-view synthetic image. Hereinafter, the gray-scale modulation and singularity synthesis image is taken as an example to illustrate the processing of gray-scale modulation and image synthesis.

As shown in FIG. 7 , it is a schematic diagram of vertical division of the eight-view original image. The eight-view original image V _k (where k=0, 2, 4, 6) is such that the image width is L and the height is H (the unit can be a unit of distance, or a pixel number, or a sub-pixel number) ) is divided into a divided image that is divided into np equal parts by the width of ΔW, where p is the number of views (eg, p=8), and n is an integer. Therefore, L = 8n ΔW. For any of the divided images, it can be expressed in V _km (where m=81+q, 0≦1≦n-1, q can be an integer value of 0~p-1).

As shown in FIG. 8 , it is a schematic diagram of the gray-scale modulation processing and image synthesis of the eight-view original image. For the synthesized image V, it has the same image width L and height H as V _k , and is also divided into np equal parts of the divided image V _m by the width of ΔW (where m=81+q, 0≦) 1≦n-1,q can be an integer value of 0~p-1). When q is an even number, let V _m = V _km (where k = q = even, m = 81 + q), that is, for any of the divided images V _m , the segmentation in the original image of the view The image V _km (where k = q, m = 81 + q) is filled in the divided image V _m . In addition, when q is an odd number, let V _m =0, or the value of a gray-scale image, that is, for any of the divided images V _m , fill in the image of the all black, or the image of a gray scale. Among the divided images V _m . Therefore, the synthesized image V is a gray-scale modulated singular composite image. In short, the so-called image synthesis of the present invention is to divide the single view image into a plurality of and appropriate equal parts, and sequentially and cyclically extract each single view image according to the arrangement order of the single view images. The segmented image is combined to form a gray-scale modulated even-numbered view synthesis image.

As shown in FIG. 9, it is a schematic diagram of the sub-picture division of the gray-scale modulated even-view view synthesis image. For the above-mentioned image V of the gray-scale modulated singular scene synthesis, and then performing the processing of dividing the screen by MxN, the image of the screen V _ij can be obtained (where 0≦i≦M-1,0≦j≦N -1) Image.

10 and 11 are schematic views showing a second configuration of a single naked-eye 3D image display device unit of the present invention. The single naked-eye 3D image display device unit 300 mainly displays a dynamic 3D image, which is composed of an anti-light reflective transparent component 310, a vertical parallax barrier component 320, a rear projection screen component 330, and a projector 340. And a unit device mechanism 390. The configuration is the same as that of the first naked-eye type 3D image display device unit described above, and will be described below only for differences. The rear projection screen component 330 is configured to display the secondary image V _{ij of} the grayscale modulated even-view synthesis image V, and the projector 340 is configured to receive and project the gray-scale modulated even-view composite image. V second screen image V _ij .

12 and 13, a schematic diagram of a third configuration of a single naked-eye 3D image display device unit of the present invention. The single naked-eye 3D image display device unit 400 mainly displays a dynamic 3D image, which is composed of an anti-light reflective transparent element 410, a vertical parallax barrier element 420, a flat display element 430, and a unit device mechanism 490. Composition. The configuration is similar to the configuration of the second naked-eye type 3D image display device unit described above, and the following description is only for different places. The flat display component 430 can be a general liquid crystal display, a plasma display, an LED display, or an OLED display, and is configured to receive and display the sub-picture V _{ij of} the gray-scale modulated even-view synthesized image V.

14 and 15 are schematic views showing a fourth configuration of a single naked-eye 3D image display device unit of the present invention. The single naked-eye 3D image display device unit 500 mainly displays a dynamic 3D image and has the function of switching between 2D/3D images, and is composed of an anti-light reflective transparent component 510 and an electronic vertical parallax barrier component 520. A flat display element 530 and a unit device mechanism 590 are formed. The configuration is the same as that of the third naked-eye type 3D image display device unit described above, and will be described below only for differences. The electronic parallax barrier element 520 can be an electronically controlled parallax barrier element, such as a conventional liquid crystal panel, which can generate a strip-shaped vertical grating according to an external input voltage (for 3D use) ), or in a state of full transparency (when used as 2D), achieve the purpose of 2D/3D image switching.

In summary, although the present invention is only described for the application of a vertical parallax barrier, the principle is also applicable to the application of other oblique parallax barriers.

10‧‧‧Display Combination System

20‧‧‧Display unit

100‧‧‧Large naked eye 3D image display device

200, 300, 400, 500‧‧‧ naked eye 3D image display device unit

210, 310, 410, 510‧ ‧ anti-light reflective transparent components

220, 320, 420‧‧‧ vertical parallax grating elements

290, 390, 490, 590‧ ‧ unit installation

230‧‧‧ Gray-scale modulated even-numbered view synthetic image slide elements

240‧‧‧Backlight module components

242‧‧‧Light diffuser

246‧‧‧White light source

248‧‧‧Light reflection sheet

330‧‧‧ Rear projection screen components

340‧‧‧Projector

430, 530‧‧‧ flat panel display components

520‧‧‧Electronic vertical parallax barrier elements

S‧‧‧ original picture

S _ij ‧‧‧ single screen

i, j‧‧‧ subscript

Number of divisions of MxN‧‧‧ screens

Original image of V ₀ , V ₂ , V ₄ , V ₆ ‧ ‧ ‧ Vision

Original image of V ₁ , V ₃ , V ₅ , V ₇ ‧‧‧ 奇景

V _k ‧‧‧ original image of the kth single vision

The mth segmentation image of the k _km ‧‧‧ kth single view original image

P‧‧·Views

N‧‧‧ integer

Np‧‧‧ total number of divisions

1‧‧‧The number of total divisions divided by the number of views

q‧‧‧The total number of divisions divided by the number of views

L‧‧‧ image width of the original image

H‧‧‧Image height of the original image

△W‧‧‧Split image width

V‧‧‧Gray-scale modulated even-numbered view synthesis image

The _mth segmentation image in the V _m ‧‧‧V synthetic image

Sub-picture image in V _ij ‧‧‧V synthetic image

V _C ‧‧‧ Multiple cameras have a common focus

FIG. 1 is a schematic diagram of a sub-picture segmentation method.

FIG. 2 is a schematic diagram of a secondary screen display method.

FIG. 3 is a schematic diagram showing the structure of a large naked-eye 3D image display device according to the present invention.

4 to 5 are schematic views showing the first configuration of a single naked-eye 3D image display device unit of the present invention.

Figure 6 shows a schematic diagram of the original image of the eight-view scene.

Figure 7 is a schematic diagram showing the vertical division of the original image of the eight-view scene.

FIG. 8 is a schematic diagram of grayscale modulation processing and image synthesis of an eight-view original image.

FIG. 9 is a schematic diagram showing the sub-picture division of the gray-scale modulated even-view view synthesis image.

10 to 11 are schematic views showing a second configuration of a single naked-eye 3D image display device unit of the present invention.

12 to 13 are schematic views showing a third configuration of a single naked-eye 3D image display device unit of the present invention.

14 to 15 are schematic views showing a fourth configuration of a single naked-eye 3D image display device unit of the present invention.

100‧‧‧Large naked eye 3D image display device

200‧‧‧Naked eye 3D image display device unit

Claims (12)

A large naked-eye 3D image display device can provide a ghost-free, natural visual depth, high image quality, and large-sized 3D image, which is mainly composed of the following devices and components: an even-numbered visual image is composed of An even number of single view images having the effects of equal parallax change; a gray-scale modulation and synthesis device performs a gray-scale modulation and synthesis process on the even-view image to generate a gray scale Modulating even-view visual composite image; the device for dividing and displaying one screen is to combine the gray-scale modulated even-view visual composite image to perform a screen segmentation process to generate a majority of the secondary image; and a plurality of naked eyes The 3D image display device unit receives the majority of the secondary image to display the 3D image. The large-scale naked-eye 3D image display device as described in claim 1, wherein the gray-scale modulation is performed by replacing a strange-view image in the even-view image with a gray-scale image, or Even view image. The large-scale naked-eye 3D image display device according to claim 2, wherein the grayscale image refers to a gray image without color, that is, all R, G, and B pixels of the image have the same Grayscale value. The large naked-eye 3D image display device according to claim 3, wherein the gray scale value is 0. The large-scale naked-eye 3D image display device according to claim 1, wherein the method of synthesizing is performed by dividing a plurality of appropriate and equally divided portions of the single view image, according to the single view images. The arrangement order sequentially and cyclically extracts the divided images in the single view images to combine to generate the gray-scale modulated even-numbered view synthesis images. The large naked-eye 3D image display device according to claim 1, wherein the plurality of naked-eye 3D image display device units are mainly composed of the following components: an anti-light reflective transparent component, which is appropriately The thickness of the light transparent material is formed on the surface of the device with a light-resistant reflective film, which can reduce image interference caused by ambient light reflection, and is installed on the outermost side of the unit device mechanism to isolate environmental pollution; a vertical parallax The grating element is composed of a light transparent material of a suitable thickness, and a vertical parallax grating is printed on the light transparent material; a gray scale modulated even-numbered view synthetic image projection sheet component is composed of one a light-transparent material of appropriate thickness is formed on the optically transparent material, and a secondary image of the gray-scale modulated even-numbered view synthesis image is printed; and a backlight module component can generate a uniform white light source. The utility model is composed of a light diffusing sheet, a white light source and a light reflecting sheet; and a unit device mechanism, which is a black box type mechanism for mounting and fixing The anti-light-reflecting transparent element, the vertical parallax barrier element, the even-numbered modulation gray synthetic image visual element slide member and said backlight module. Large naked-eye 3D image display as described in item 6 of the patent application scope The display device, wherein the vertical parallax barrier element and the gray scale modulated even-numbered view synthesis image projection sheet component are combined into one, that is, on both sides of the same transparent optical material of appropriate thickness, respectively printed There is a vertical parallax barrier and a sub-picture image of a gray-scale modulated even-view synthesis image. The large naked-eye 3D image display device according to claim 6, wherein the white light source is composed of a white light LED light source. The large naked-eye 3D image display device according to claim 6, wherein the unit device mechanism can be combined with other unit device mechanisms and assembled into a large naked-eye 3D image display device of the present invention. The large naked-eye 3D image display device according to claim 1, wherein the plurality of naked-eye 3D image display device units are mainly composed of the following components: an anti-light reflective transparent component, which is appropriately The thickness of the light transparent material is formed on the surface of the device with a light-resistant reflective film, which can reduce image interference caused by ambient light reflection, and is installed on the outermost side of the unit device mechanism to isolate environmental pollution; a vertical parallax The grating element is composed of a light transparent material of a suitable thickness, and a vertical parallax grating is printed on the light transparent material; a rear projection screen element is used to display the gray scale modulation even number of views Synthetic image sub-picture image; a projector for receiving and projecting a sub-picture image of the gray-scale modulated even-numbered view synthesis image; and a unit device mechanism for a black box-type mechanism for mounting and fixing the anti-light reflection transparent An element, the vertical parallax barrier element, the rear projection screen element, and the projector. The large naked-eye 3D image display device according to claim 1, wherein the plurality of naked-eye 3D image display device units are mainly composed of the following components: an anti-light reflective transparent component, which is appropriately The thickness of the light transparent material is formed on the surface of the device with a light-resistant reflective film, which can reduce image interference caused by ambient light reflection, and is installed on the outermost side of the unit device mechanism to isolate environmental pollution; a vertical parallax The grating element is composed of a light transparent material of a suitable thickness, and a vertical parallax grating is printed on the optical transparent material; a flat display component can be a general liquid crystal display, a plasma display, or an LED The display or the OLED display is configured to receive and display the sub-picture image of the gray-scale modulated even-view view synthesis image; and a unit device mechanism, which is a black box type mechanism for mounting and fixing the anti-light A reflective transparent element, the vertical parallax barrier element, and the planar display element. The large naked-eye 3D image display device according to claim 1, wherein the plurality of naked-eye 3D image display device units are mainly composed of the following components: An anti-reflective transparent component is composed of a light transparent material of suitable thickness, and a light-reflecting film is disposed on the surface thereof, which can reduce image interference caused by ambient light reflection, and is the most suitable device in the unit device. The outer side is used to isolate the pollution of the environment; an electronic parallax barrier element can be composed of a liquid crystal panel which can generate a strip-shaped vertical grating or a fully transparent state according to the presence or absence of an external input voltage. To achieve the purpose of 2D/3D image switching; a flat display component, which can be a general liquid crystal display, a plasma display, an LED display, or an OLED display, is used for receiving and displaying the gray-scale modulated even-numbered view synthesis The secondary image of the image; and a unit device mechanism is a black box type mechanism for mounting and fixing the anti-light reflective transparent element, the electronic parallax barrier element and the flat display element.