A naked-eye 3D display method

Abstract

The present application belongs to the field of image display, and particularly relates to a kind of naked eye 3D display method, comprising: display image, and the position of the gaze point of viewer in image is acquired in real time;First region is formed based on gaze point on image, and the object displayed in first region has first contrast ratio;The image in first region falls on the retina of viewer;Second region is formed outside first region, the image in second region falls in front of the retina of viewer, and the contrast ratio of object in second region is less than first contrast ratio to form different depth in eye, realize naked eye 3D.Through the above setting, the viewing experience of viewer is improved.

Description

Technical Field

[0001] This invention belongs to the field of image display, and more specifically relates to a method for displaying naked-eye 3D. Background Technology

[0002] 3D vision is an important component of human vision and has long been a focus of attention in the entertainment and medical fields. Currently, most mainstream glasses-free 3D imaging is based on binocular parallax. Binocular parallax leads to accommodation-verb discrepancies, resulting in a poor experience and causing varying degrees of dizziness for most people. Furthermore, most binocular parallax imaging requires glasses, limiting the application scenarios for glasses-free 3D. Summary of the Invention

[0003] The present invention is proposed based on the above-mentioned needs of the prior art. The technical problem to be solved by the present invention is to provide a naked-eye 3D display method to improve the viewing experience.

[0004] To address the above problems, the technical solution provided by this invention includes:

[0005] A method for displaying naked-eye 3D is provided, comprising: displaying an image and obtaining the position of a viewer's gaze point in the image; forming a first region on the image based on the gaze point, wherein objects displayed in the first region have a first contrast; the image in the first region falls on the viewer's retina; the gaze point is formed based on both eyes; forming a second region outside the first region, wherein the image in the second region falls in front of the viewer's retina, and the contrast of objects in the second region is less than the first contrast to form different depths in the eye, thereby realizing naked-eye 3D.

[0006] By setting up the above, different contrasts are displayed in different areas to form different defocuses in the viewer's eyes. The image formed in the first area can fall on the viewer's retina, that is, it can be clearly imaged in the viewer's eyes. The image formed in the second area will fall in front of the viewer's retina, that is, it will be defocused in the viewer's eyes. Thus, the first area and the second area form different imaging depths, and images with different depths will form 3D vision.

[0007] Preferably, the contrast of objects in the second region is negatively correlated with their distance from the first region; the farther an object in the second region is from the first region, the lower its contrast.

[0008] Preferably, the contrast of different parts of the same object in the second region is different, with the higher contrast corresponding to the part closer to the first region and the lower contrast corresponding to the part farther away from the first region.

[0009] Preferably, the second region includes multiple sub-regions, and the contrast of objects displayed in sub-regions closer to the first region is greater than the contrast of objects displayed in sub-regions farther from the first region, and the contrast of objects in the same region is the same.

[0010] Preferably, the plurality of sub-regions are concentrically divided with the gaze point as the center.

[0011] Preferably, the multiple sub-regions are arranged sequentially from the inside out, with the innermost sub-region connected to the first region. Dividing the i-th sub-region includes: obtaining the object closest to the (i-1)-th sub-region in the undivided region. This object includes complete objects in the undivided region and objects simultaneously located in the (i-1)-th sub-region and the undivided region. More than half of the objects simultaneously located in the (i-1)-th sub-region and the undivided region are located in the i-th sub-region. When i = 1, the object closest to the first region is obtained. It is determined whether more than half of the area of ​​the object falls within the field of view range of 5i° to 5(i+1)°. If it does not fall within, the area corresponding to the field of view range of 5i° to 5(i+1)° is the i-th sub-region. If it falls within, the boundary of the i-th sub-region is formed by the farthest point of the object in the radial direction.

[0012] Preferably, the plurality of sub-regions are arranged sequentially from the inside out, with the innermost sub-region being connected to the first region; dividing the i-th sub-region includes: taking the region corresponding to the field of view range of 5i°~5(i+1)° as the i-th sub-region.

[0013] Preferably, when the field of view of the object locked by the gaze point is less than 5°, the area corresponding to the field of view range of 0° to 5° is taken as the first area.

[0014] Preferably, when the field of view of the object locked by the gaze point is greater than 5°, the region corresponding to the locked object is taken as the first region.

[0015] Preferably, when the field of view of the object locked by the fixation point is greater than 5°, the area corresponding to the field of view range of 0° to 5° is taken as the first area, and the contrast of the locked object beyond the field of view of 5° gradually decreases as it moves away from the first area.

[0016] Compared to existing technologies, this invention, through the aforementioned configuration, creates different defocus levels in the viewer's eye by displaying different contrasts in different areas. The image formed in the first area falls on the viewer's retina, i.e., it is clearly imaged in the viewer's eye. The image formed in the second area falls in front of the viewer's retina, i.e., it is defocused in the viewer's eye. This results in different imaging depths in the first and second areas, and images with different depths create 3D vision. This invention creates naked-eye 3D vision by forming different contrasts in different areas through different methods. Furthermore, this method can be used in many scenarios and can be implemented on a simple electronic screen without the need for other display devices or display apparatuses. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a flowchart illustrating the steps of a naked-eye 3D display method according to an embodiment of the present invention;

[0019] Figure 2 This is a contrast diagram of an image when the gaze point is located at object A in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of image contrast when the gaze point is located at object B in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of image contrast when the gaze point is located at object C in an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0024] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0025] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0026] The human eye perceives contrast based on changes in brightness at boundaries; the more pronounced the brightness at the boundaries, the higher the contrast. Under the same conditions, the highest contrast is found in areas of sharp focus (where the image is focused on the retina), while the contrast in areas of blurred focus (where the image is focused in front of the retina, i.e., out of focus) decreases as the degree of defocus increases. For human eye fixation, the depth of sharp focus (distance from the eye) is called the depth of fixation. Objects outside the depth of fixation (regardless of distance) will cause varying degrees of defocus. When the human eye images an entire spatial region, there are contrast differences between objects in a fixed and non-fixated state, allowing the perception of depth within the spatial region and forming 3D vision.

[0027] This embodiment provides a method for displaying naked-eye 3D, such as... Figure 1 As shown.

[0028] The naked-eye 3D display method includes:

[0029] Display the image and obtain the viewer's gaze point within the image.

[0030] The image is displayed by an electronic device such as a display screen, which displays at least two objects. When a viewer views the image on the display screen, they will focus on one of the objects in the image, thereby knowing the approximate location of the gaze point and determining the specific location of the gaze point based on the area occupied by the object.

[0031] A first region is formed on the image centered on the point of gaze, and the objects displayed in the first region have a first contrast; the image in the first region falls on the viewer's retina.

[0032] The first region can be determined in the following ways:

[0033] I) Object determination based on fixation point lock. The first region at least covers the fixation point-locked object to ensure that all regions of the object corresponding to the fixation point have the same contrast, avoiding image distortion from affecting the viewer's viewing experience. This setting ensures that the object where the fixation point is located has a first contrast.

[0034] After dividing the first region, it is determined whether the first region still covers other objects. If there are other objects in the first region besides the object corresponding to the gaze point, and more than half of the area of ​​the other objects falls within the first region, then such objects also have the first contrast. If more than half of the area of ​​the other objects falls outside the first region, then the contrast of such objects is less than the first contrast.

[0035] II) Determined based on the viewer's central field of view. The area covered by the central field of view is designated as the first region. The range of the central field of view is a field of view angle of 0° to 5°.

[0036] In this scenario, since viewers typically focus on the object rather than the empty area, the area occupied by the object is determined based on the point of fixation. This area is designated as the first region. The object locked by the point of fixation has a first contrast, and other objects within this region also have a first contrast. Objects within the first region are usually clearly imaged in the viewer's eye; that is, the image of the object within the first region falls on the viewer's retina. Furthermore, in this case, the completeness of the object within the first region is not considered; that is, the contrast is only affected by distance. The first region may contain only a portion of an object, and the contrast of the portion outside the first region differs from that of the portion within the first region. For the locked object extending beyond a 5° field of view, the contrast gradually decreases as it moves away from the first region.

[0037] A second region is formed outside the first region, and the image in the second region falls in front of the viewer's retina, with the contrast of the object in the second region being less than that of the first region to create different depths in the eye.

[0038] In one feasible implementation of this embodiment, the contrast of objects within the second region is negatively correlated with their distance from the first region; the farther an object in the second region is from the first region, the lower its contrast. In this implementation, the distance between an object in the second region and the first region can be based on the center point of the object in the second region or on the point in the second region that is closest to the object in the first region. In this implementation, the contrast of the same object in the second region is the same.

[0039] For example, such as Figures 2-4 As shown, the distance between objects A and B is significantly greater than the distance between objects B and C. The contrast of objects A, B, and C varies depending on the fixation point's location. For object A, its contrast is highest when the fixation point is on object A itself, lowest when the fixation point is on object C, and falls between the contrast values ​​of the first two cases when the fixation point is on object B. The contrast of objects B and C is the same as that of object A. Their contrast is highest when the fixation point is on themselves, lowest when the fixation point is on the object furthest from them, and between their maximum and minimum values ​​when the fixation point is on themselves and other objects before the furthest object.

[0040] In another feasible implementation of this embodiment, the contrast of different parts of the same object within the second region is different. The part closer to the first region has a higher contrast, and the part farther away from the first region has a lower contrast. That is, the contrast of different positions of the same object is different due to the different distances between it and the first region, and the farther away from the first region the lower the contrast of that position.

[0041] In another feasible implementation of this embodiment, the second region includes multiple sub-regions, wherein the contrast of objects displayed in sub-regions closer to the first region is greater than the contrast of objects displayed in sub-regions farther from the first region, and objects within the same region have the same contrast. Further, the multiple sub-regions are concentrically divided around the gaze point.

[0042] Specifically, the multiple sub-regions are connected sequentially from the inside out, with the innermost sub-region being connected to the first region.

[0043] The division of sub-regions within the second region includes the following two cases:

[0044] I) Divide according to objects.

[0045] Due to the random distribution of objects within an image, sub-regions are divided based on the object's position. The division of regions is explained using the i-th sub-region as an example.

[0046] For the i-th sub-region, the (i-1)-th sub-region has been divided (based on the first sub-region), and the remaining region is the undivided region. The division of the i-th sub-region includes:

[0047] Get the object that is closest to the (i-1)th sub-region in the undivided region. This object includes complete objects in the undivided region and objects that are located in both the (i-1)th sub-region and the undivided region. More than half of the objects that are located in both the (i-1)th sub-region and the undivided region are located in the i-th sub-region. When i=1, get the object that is closest to the first region.

[0048] Determine whether more than half of the object's area falls within the field of view range of 5i° to 5(i+1)°. If it does not fall within, then the area corresponding to the field of view range of 5i° to 5(i+1)° is the i-th sub-region. If it falls within, then the boundary of the i-th sub-region is formed by the farthest point of the object along the radial direction.

[0049] II) Divide according to the field of view.

[0050] The division of the i-th sub-region includes: taking the region corresponding to the field of view range of 5i°~5(i+1)° as the i-th sub-region.

[0051] This division method does not consider the integrity of the object. When an object is distributed in multiple sub-regions, the parts located in different regions have different contrasts, and the contrast gradually decreases in the direction away from the first region.

[0052] It acquires the gaze point in real time and adjusts the contrast of different regions of the image as the gaze point changes.

[0053] By adjusting the contrast through the above settings, the depth of the image in the eye is adjusted, thereby creating 3D vision.

[0054] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for displaying naked-eye 3D, characterized in that, include: Display the image and obtain the position of the viewer's gaze point in the image in real time; A first region is formed on the image based on the fixation point, and the object displayed in the first region has a first contrast; the image in the first region falls on the viewer's retina; The fixation point is formed based on both eyes; A second region is formed outside the first region, and the image in the second region falls in front of the viewer's retina. The contrast of the objects in the second region is less than that of the first region to create different depths in the eye, thus achieving naked-eye 3D. The second region includes multiple sub-regions. The contrast of objects displayed in sub-regions that are closer to the first region is greater than the contrast of objects displayed in sub-regions that are farther from the first region. The contrast of objects in the same region is the same. The multiple sub-regions are concentrically divided with the gaze point as the center; The multiple sub-regions are arranged sequentially from the inside out, with the innermost sub-region connected to the first region; Dividing the i-th sub-region includes: Get the object that is closest to the (i-1)th sub-region in the undivided region. This object includes complete objects in the undivided region and objects that are located in both the (i-1)th sub-region and the undivided region. More than half of the objects that are located in both the (i-1)th sub-region and the undivided region are located in the i-th sub-region. When i=1, get the object that is closest to the first region. Determine whether more than half of the object's area falls within the field of view range of 5i°~5(i+1)°. If it does not fall within, then the area corresponding to the field of view range of 5i°~5(i+1)° is the i-th sub-region. If it falls within, then the boundary of the i-th sub-region is formed by the farthest point of the object along the radial direction. The multiple sub-regions are arranged sequentially from the inside out, with the innermost sub-region connected to the first region; The division of the i-th sub-region includes: taking the region corresponding to the field of view range of 5i°~5(i+1)° as the i-th sub-region.

2. The naked-eye 3D display method according to claim 1, characterized in that, The contrast of objects in the second region is negatively correlated with their distance from the first region; the farther an object in the second region is from the first region, the lower its contrast.

3. The naked-eye 3D display method according to claim 1, characterized in that, The contrast of different parts of the same object in the second region is different. The part that is closer to the first region has a higher contrast, and the part that is farther away from the first region has a lower contrast.

4. The naked-eye 3D display method according to claim 1, characterized in that, When the field of view of the object locked by the fixation point is less than 5°, the area corresponding to the field of view range of 0° to 5° is taken as the first region.

5. The naked-eye 3D display method according to claim 1, characterized in that, When the field of view of the object locked by the fixation point is greater than 5°, the region corresponding to the locked object is taken as the first region.

6. The naked-eye 3D display method according to claim 1, characterized in that, When the field of view of the object locked by the fixation point is greater than 5°, the area corresponding to the field of view range of 0° to 5° is designated as the first region. The part of the locked object that is beyond the field of view of 5° gradually decreases in contrast as it moves away from the first region.

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