TWI477885B - 3d imaging system and method - Google Patents

Description

Three-dimensional imaging system and method

The present invention relates to a three-dimensional display technology, and more particularly to a three-dimensional imaging system and a three-dimensional imaging method.

In recent years, due to the popularity of 3D (3D/Three Dimensional) movies, the demand for 3D movies has increased. Relative 3D products have also moved from film to LCD industry. First of all, why can humans see the depth through the visual and feel the three-dimensional sense? The most important point is that the human eye can feel the depth, that is, the "depth perception"; After the information, the relative position in the three-dimensional space can be judged. Because the position of the two eyes of the person is different, the average distance between the two eyes is about 5 to 7 cm, so there will be binocular parallax when the object is seen, and the human brain will merge the two images together (convergence) ), and produce a three-dimensional feeling; and this is called "binocular cues". In addition, humans can also judge the distance of the object from the eye's adaptation to the near and far focal length, motion parallax, perspective or light and shadow, and even if the human eye has only one eye, it can judge the distance.

Therefore, in order to make a 2D (Two Dimensional) plane film into a 3D stereoscopic film, it is necessary to make the left and right eyes of the human being see different images (that is, the binocular parallax of the general object). Through brain fusion, 2D movies can become lifelike 3D movies.

In the prior art, many related technologies such as: color separation glasses, polarized glasses, and the like are used to allow a user to feel 3D images. For example, using shutter glasses, the basic principle of this technique is to interactively display images of the left and right eyes at twice the frequency on the screen, while the glasses will dynamically shield the user's left eye. And the right eye, cover the right eye when the left eye image is displayed on the screen, and cover the left eye when the right eye image is displayed on the screen, so as to let the two eyes see different images. although However, in this situation, no two eyes see the image at the same time, but due to the effect of the visual persistence of the human eye, it is still possible to feel that both eyes have different images, and thus a three-dimensional effect. .

In order to shoot 3D movies or photos, two cameras are generally required for the left and right images, that is, the two camera frames are mounted on a photographic frame, and the shooting angle is fixed for shooting. Due to the fixed shooting angle, the shooting of 3D movies is usually fixed as "foreground" or "back view". Because of this, the 3D effect of the front/rear scene is fixed, and when 3D items need to be shot, When the effect is fixed, it is often only possible to capture a picture that jumps forward, and cannot capture a horizontally shifted 3D picture that jumps from left to right. Therefore, the 3D effect of the current 3D effect is not satisfactory. .

Therefore, the present invention provides a 3D imaging system and apparatus capable of adjusting a shooting angle, so that the two cameras can arbitrarily adjust the intersection angle between the shooting angle and the central axis of the photographic lens during shooting, so that the film can be arbitrarily adjusted to "foreground" when shooting a movie. Shooting or "back view" shooting, and when shooting 3D effects, its 3D representation can be more diversified, increasing the effect of 3D movies.

In order to solve the above problems, one of the main objects of the present invention is to provide a three-dimensional imaging system, by which the system can be arbitrarily adjusted to "foreground" shooting or "back view" shooting, which makes it easier to capture more diverse 3D effects. 3D movie or screen.

Another main object of the present invention is to provide a method for photographing a three-dimensional image by which a 3D effect image or picture can be captured.

According to the above object, the present invention provides a three-dimensional imaging system comprising: a pair of cameras arranged adjacent to each other at a pitch (with a mirror at a horizontal or any angle), and a focus module is disposed in each camera; The distance meter is mounted on one of the cameras; a control device is electrically connected to the camera and the range finder; wherein the three-dimensional imaging system is characterized in that: the distance between the cameras is adjustable, and the photography thereof is The angle can also be adjusted manually or automatically. The camera determines the distance between the camera and the camera and the shooting angle by the rangefinder, and then controls the angle. The device adjusts the shooting angle of the camera so that the central axis of the photographic lens intersects at an intersection point, and then focuses the subject on the focusing module on the camera.

Through the system and method provided by the invention, it is easier to capture the desired 3D effect, and the 3D image or the picture is more diversified and the expression is more abundant.

Since the present invention discloses a three-dimensional imaging system; some of the cameras, rangefinders, and focus modules used therein are achieved by the prior art, and thus are not fully described in the following description. In addition, the drawings in the following texts are not completely drawn in accordance with actual relevant dimensions, and their function is only to show a schematic diagram relating to the features of the present invention.

First, please refer to FIG. 1, which is a schematic diagram of a three-dimensional imaging system of the present invention. As shown in FIG. 1 , a three-dimensional imaging system includes: a first camera 10 and a second camera 12 disposed adjacent to each other at a pitch; and a first focus mode disposed on each of the first camera 10 and the second camera 12 The group 20 and the second focusing module 22; a range finder 30 is mounted on the first camera 10; a control device 40 is electrically connected to the first camera 10, the second camera 12, and the range finder 30; An imaging output display 50 combines the first image and the second image captured by the first camera 10 and the second camera 12 into a 3D image by the control device 40, and then displays the image on the imaging output display 50. In addition, the horizontal spacing between the first camera 10 and the second camera 12 can be freely moved, for example, the first camera 10 and the second camera 12 are disposed on a rail device; and the first camera 10 and the second camera 12 are disposed. The photographing angles X and Y can also be freely rotated, and the angle of rotation of the camera is 360°, which is not limited by the present invention.

Next, referring again to FIG. 1, at the time of shooting, the range finder 30 on the first camera 10 measures the shooting distance a and the angle α of the first camera 10 and the subject 3, and transmits the data to the control device 40. The control device 40 analyzes the shooting distance a, the distance b between the two cameras, and the angle α, and calculates the relationship between the subject 3 and the first camera 10 and the second camera 12 by the trigonometric relationship calculation. The relative position is used to adjust the angles α and β of the first camera 10 and the second camera 12 to make the shooting angles X and Y of the first camera 10 and the second camera 12 The central axis of the photographic lens intersects at an intersection point 1 (for example, the intersection point 1 in Fig. 1 is located behind the subject 3, and the 3D image capturing effect produced by the intersection of the intersection points 1 is explained later); The first focus module 20 and the second focus module 22 on a camera 10 and the second camera 12 are focused on the subject 3, and after the subject 3 is clearly imaged on the first camera 10 and the second camera 12, At this time, the imaging can be performed, and the first image and the second image captured by the first camera 10 and the second camera 12 are combined into a 3D image by the control device 40, and then displayed on the imaging output display 50. In order to enable the 3D image on the imaging output display 50 to allow the viewer to directly see the 3D effect, the imaging output display 50 is also provided with a polarizing film (not shown) so that the viewer can see the image with naked eyes. The 3D picture on the display 50 is output; in addition, in order to make the imaging output display 50 can be naked to view the 3D technology, the naked-eye 3D technology of the present invention further includes: Parallel Barriers, Lenticular Lenses or pointing Technology such as Directional Backlight. By the three-dimensional naked vision technology, the imaging output display 50 can be seen in the naked state, that is, the 3D image can be seen.

It should be further emphasized that the control device 40 can adjust the relative position between the first camera 10 and the second camera 12 and the subject 3 by the position of the range finder 30 and the relative data transmitted by the range finder 30. Therefore, the present invention does not limit the position of the range finder 30, for example, the range finder 30 is mounted on the first camera 10. Meanwhile, the present invention does not limit the number of the range finder 30 or the method of ranging, for example, The range finder 30 is mounted on the first camera 10 and the second camera 12 respectively; as long as the calculation of the trigonometric relationship can be performed, the first camera 10 and the second camera 12 and the subject 3 can be calculated. The relative position of the device; or the calculation of the image comparison on the first camera 10 and the second camera 12 to calculate the relative position between the first camera 10 and the second camera 12 and the subject 3 can be applied to the present invention. .

Next, please refer to FIG. 2A and FIG. 2B , which are schematic diagrams of the front view and the rear view of the present invention. As shown in FIG. 2A, when the photographing angles X, Y of the first camera 10 and the second camera 12 shown in FIG. 1 intersect the center axis of the photographing lens at an intersection point 1 and intersect the subject 3, 3 After clearly focusing and imaging on the first camera 10 and the second camera 12, A 3D effect that appears as a "foreground" picture can be taken; and a "foreground" picture refers to a 3D visual effect in which a 3D object of the picture is popped up (POP UP) from the display screen 50. Next, as shown in FIG. 2B, when the photographing angles X, Y of the first camera 10 and the second camera 12 shown in FIG. 1 intersect the center axis of the photographing lens at an intersection point 1 before the photographing object 3, After the subject 3 is clearly focused and imaged on the first camera 10 and the second camera 12, a 3D effect appearing as a "back view" picture can be captured; and a "back view" picture means that the picture exhibits a 3D effect, However, its 3D effect is to present a stereoscopic form of the subject 3 in the depth in the imaging output display 50, which is not the visual effect that the subject 3 in the picture jumps out of the screen. It should be emphasized that the present invention thereby adjusts the shooting angles X and Y of the first camera 10 and the second camera 12, so that the present invention can select 3D images of "foreground" and "back view" at the same fixed point without The 3D image is captured by the photographer's movement; especially for the "foreground" picture, by adjusting the distance b between the two cameras, it can be shot at a close distance, so the 3D that can be selected according to the photographer can be selected. Visually capture clear and more diverse 3D images.

Next, please refer to FIG. 3, which is a schematic diagram of an embodiment of three-dimensional image capturing of the present invention. As shown in FIG. 3, during the image capturing, when the subject 3 is in the moving state, its moving state is moved from the position A to the position B. At the time of shooting, the photographing angles X, Y of the first camera 10 and the second camera 12 intersect the central axis of the photographing lens at an intersection 1 and are fixed; and the first focusing module 20 and the second focusing mode of the two cameras The group 22 focuses on the subject 3. When the subject 3 is in position A, the 3D image captured is the 3D effect of the "back view" screen; and when the subject 3 is moved from position A to position B, the 3D image will be changed from "back view" to " The 3D effect of the foreground image, that is, its 3D visual effect, is a 3D visual effect that is transformed from a stereoscopic form in depth to a pop-up (POP UP). For example, when shooting a ball from position A to position B, its 3D visual effect will see the ball jump out of the screen from the depth of the screen. On the contrary, when the subject 3 moves from position B to position A, its 3D image will be changed from "foreground" to "3" effect of the "back view" screen, that is, its 3D visual effect will be POP UP 3D visual effect. Turn into a three-dimensional form in the depth. For example, when shooting a ball from position B to position A, its 3D visual effect will see the ball by the firefly. Jumping outside the screen into the depths.

Therefore, in the present embodiment, the subject 3 can be a linear movement, so when the photographing angles X, Y of the first camera 10 and the second camera 12 intersect the central axis of the photographing lens at an intersection point 1, and then The first focus module 20 and the second focus module 22 on the first camera 10 and the second camera 12 focus on the subject 3, so that the subject 3 is clearly imaged on the first camera 10 and the second camera 12. At this time, the shooting can be performed; obviously, the first focusing module 20 and the second focusing module 22 on the first camera 10 and the second camera 12 must simultaneously move with the subject 3 in synchronization with The subject 3 is clearly imaged throughout the movement. Therefore, in the three-dimensional image capturing system of the present embodiment, the control device 40 is provided with a synchronization controller, and the connection end of the synchronization controller is connected to the servers disposed on the first camera 10 and the second camera 12, so that A camera 10 and a second camera 12 can be configured with a synchronization controller by the control device 40 for the purpose of synchronous focusing. It should be emphasized here that the control method of the synchronous controller of the present embodiment uses the conventional servo control, so the operation principle and configuration thereof will not be described in detail.

Next, please refer to FIG. 4A and FIG. 4B , which are schematic diagrams of another embodiment of the three-dimensional image capturing of the present invention. Therefore, in the present embodiment, the subject 3 can be a non-linear movement, so when the photographing angles X, Y of the first camera 10 and the second camera 12 intersect the central axis of the photographing lens at an intersection point 1, and then The first focus module 20 and the second focus module 22 on the first camera 10 and the second camera 12 focus on the subject 3, so that the subject 3 is clearly imaged on the first camera 10 and the second camera 12. At this time, shooting can be performed; obviously, the first camera 10 and the second camera 12 at this time must move in synchronization with the subject 3. As shown in FIG. 4A, the intersection point is behind the subject, and therefore, a "foreground" 3D effect can be captured. For example, when shooting the "foreground" 3D effect, when the subject 3 is in the P1 position, the shooting angles X1, Y1 of the first camera 10 and the second camera 12 intersect the central axis of the photographic lens at an intersection F1; When the subject 3 is in the P2 position, the photographing angles X2 and Y2 of the first camera 10 and the second camera 12 intersect the center axis of the photographing lens at an intersection point F2; and so on, when the subject 3 is in the Pn position, The shooting angle Xn of the first camera 10 and the second camera 12, Yn intersects the central axis of the photographic lens at an intersection Fn; obviously, the shooting angles X, Y of the first camera 10 and the second camera 12 move with the movement of the subject 3.

Please refer to FIG. 4B again. When shooting the "back view" 3D effect, the intersection point is in front of the subject, so a "back view" 3D effect can be taken. For example, when the subject 3 is in the P1 position, the shooting angles X1, Y1 of the first camera 10 and the second camera 12 intersect the central axis of the photographic lens at an intersection F1; and so on, when the subject 3 is at the Pn position. At this time, the photographing angles Xn, Yn of the first camera 10 and the second camera 12 intersect the central axis of the photographing lens at an intersection Fn. The main difference between FIG. 4A and FIG. 4B is that FIG. 4A is a "foreground" 3D shooting, so that the center axis of the photographic lens intersects at 1 and then the subject 3, and FIG. 4B is the "back view" 3D. The center axis of the photographic lens intersects before the subject 3 is placed.

Therefore, in the present embodiment, the subject 3 can be a non-linear movement, so when the photographing angles X, Y of the first camera 10 and the second camera 12 intersect the central axis of the photographing lens at an intersection point 1, and then The first focus module 20 and the second focus module 22 on the first camera 10 and the second camera 12 focus on the subject 3, so that the subject 3 is clearly imaged on the first camera 10 and the second camera 12. At this time, shooting can be performed; obviously, the first camera 10 and the second camera 12 at this time must move in synchronization with the subject 3. Therefore, in the three-dimensional image capturing system of the present embodiment, the control device 40 is provided with a synchronization controller, and the connection end of the synchronization controller is connected to the servers disposed on the first camera 10 and the second camera 12, so that A camera 10 and a second camera 12 can be configured with a synchronization controller by the control device 40 for the purpose of simultaneous shooting. It should be emphasized here that the control method of the synchronous controller of the present embodiment uses the conventional servo control, so the operation principle and configuration thereof will not be described in detail.

Obviously, when FIG. 4A and FIG. 4B use a multi-target scene shooting, it can simultaneously use multiple sets of three-dimensional image capturing systems of the present invention, for example, a set of three-dimensional image capturing systems captures the foreground in FIG. 4A. 3D effect, with another set of 3D image capture system to capture the "back view" 3D effect in Figure 4B, or another set of 3D image capture system to shoot "back view" to "foreground" in Figure 3 The 3D effect is either transferred from "foreground" to "back view" The 3D effect is finally edited according to the needs of the filmmaker to form a 3D movie.

Next, please refer to FIG. 5 , which is a schematic flowchart of a method for photographing three-dimensional imaging of the present invention. As shown in FIG. 5, the photographing method of the three-dimensional imaging of the present invention comprises the following steps:

Step 501: Providing a pair of cameras, which are arranged adjacent to each other at a pitch; the spacing between the cameras is freely adjustable, and then proceeds to step 502.

Step 502: Adjust the spacing between the two cameras; first adjust the spacing b between the first camera 10 and the second camera 12; for example, the first camera 10 and the second camera 12 are arranged on a rail device for adjustment, and then Go to step 503.

Step 503: Measuring the distance between the subject and the two cameras and the shooting angle; adjusting the distance a and the angle α of the subject 3 by the range finder 30 disposed on the camera, thereby adjusting the first camera 10 and the second The photographing angles X, Y of the camera 12 proceed to step 504.

Step 504: Adjust the photographing angles X and Y of the first camera 10 and the second camera 12 so that the central axis of the photographing lens intersects at an intersection point, and the intersection point can be selected in the foreground or the back view of the photograph; for example, The distance meter 30 measures the distance a and the angle α of the subject 3, and then calculates the relative position between the subject 3 and the first camera 10 and the second camera 12 via the calculation of the control device 40, and then determines that it is to be photographed. Prospect or "back view". If the "foreground" is taken, the intersection 1 is placed behind the subject 3; if the "back view" is taken, the intersection 1 is placed in front of the subject 3, and then proceeds to step 505.

Step 505: Focus the subject so that the subject is clearly imaged on the two cameras; and the first focus module 20 and the second focus module 22 on the first camera 10 and the second camera 12 focus on the subject 3 to make the subject 3 The main object is clearly presented, and finally proceeds to step 506.

Step 506: The subject is photographed; after the subject is photographed, the first image and the second image captured by the first camera 10 and the second camera 12 are combined into a 3D image via the control device 40.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection of the invention shall be subject to the patent application attached to this specification. The scope is defined.

X, Y‧‧‧ photography angle

X1-Xn‧‧‧Photography angle

P1-Pn‧‧‧Photograph location

F1-Fn‧‧‧ intersection

α, β‧‧‧ angle

A‧‧‧ Shooting distance

B‧‧‧ spacing

1‧‧‧ intersection

3‧‧‧Photographs

10‧‧‧First camera

12‧‧‧Second camera

20‧‧‧First Focus Module

22‧‧‧Second focus module

30‧‧‧ Rangefinder

40‧‧‧Control device

50‧‧‧ imaging output display

501-506‧‧‧Steps

1 is a schematic diagram of a three-dimensional imaging system of the present invention; FIG. 2A is a schematic diagram of a front view of the present invention; FIG. 2B is a schematic diagram of a rear view of the present invention; FIG. 3 is a schematic diagram of a three-dimensional image capture of the present invention; A schematic diagram of a front view of another embodiment of the three-dimensional image capture of the present invention; FIG. 4B is a schematic diagram of a rear view of another embodiment of the three-dimensional image capture of the present invention; FIG. 5 is a schematic flow chart of the steps of the three-dimensional imaging method of the present invention.

X, Y‧‧‧ photography angle

α, β‧‧‧ angle

A‧‧‧ Shooting distance

B‧‧‧ spacing

1‧‧‧ intersection

3‧‧‧Photographs

10‧‧‧First camera

12‧‧‧Second camera

20‧‧‧First Focus Module

22‧‧‧Second focus module

30‧‧‧ Rangefinder

40‧‧‧Control device

50‧‧‧ imaging output display

Claims (7)

A three-dimensional imaging method, the steps of which are as follows: providing a pair of cameras, which are arranged adjacent to each other at a pitch; adjusting the distance of the pair of cameras; measuring the distance between the subject and the pair of cameras and the shooting angle; respectively measuring a subject a distance from the pair of cameras and a shooting angle; adjusting a shooting angle of the pair of cameras such that a central axis of the pair of cameras intersects at an intersection, and the intersection is located before or after the subject; focusing the subject, So that the subject is clearly imaged on the pair of cameras; the subject is photographed. The three-dimensional imaging method according to claim 1, wherein the pair of cameras captures a central axis of the photographic lens at a fixed intersection, and the focus is focused as the subject moves. A three-dimensional imaging system comprising: a pair of cameras arranged adjacent to each other at a pitch, and each of the cameras is provided with a focusing module; a range finder is mounted on any of the cameras; and a control device, And the pair of cameras and the range finder are electrically connected; wherein the three-dimensional imaging system is characterized in that: the distance between the pair of cameras is adjustable, and the photographic angle thereof can also be adjusted, and the pair of cameras is used by the range finder Determining a distance between the camera and the pair of cameras and a shooting angle, and adjusting the camera angle of the pair of cameras by the control device to intersect the central axis of the camera lens of the pair of cameras at an intersection, the intersection meeting at the object At a position before or after, the subject is focused by the focus module on the pair of cameras. The three-dimensional imaging system according to claim 3, further comprising a shadow Like the output display, the control unit displays the images captured by the camera and displays them on the image output display. The three-dimensional imaging system of claim 3, wherein each of the cameras has an adjustment angle of 360°. According to the three-dimensional imaging system of claim 3, the control device further includes a synchronization controller. According to the three-dimensional imaging system described in claim 6, the synchronous controller control mode is servo control.