CN102012628B - Single-machine polarizing stereo film imaging system and imaging method - Google Patents

Abstract

Translated fromChinese

本发明涉及一种单机偏光立体电影成像系统及成像方法，包括拍摄装置和放映装置，拍摄装置包括摄像机和分光装置，在摄像机的镜头前放置一组分光装置，分光装置具有多光路通道，多光路通道具有同一光路出口，光路出口连通摄像机的镜头；放映装置包括投影仪、分光装置、偏振片和金属幕布，投影仪的镜头前放置一组相同的分光装置，在多光路通道前分别加一片不同滤光方向的偏振片，光路出口连通投影仪的镜头。采用了双目视差的原理，采用分光装置将一部摄像机的光路分成了多个光路，拍摄镜头前的景像通过左、右光路通道后会经过一定角度的偏转达到镜头。本发明有益的效果是：结构简单、操作步骤简洁，由于是单机拍摄和放映，因此硬件成本与双机立体电影相比也大大降低。

The invention relates to a stand-alone polarized three-dimensional film imaging system and imaging method, including a shooting device and a projection device. The shooting device includes a camera and a beam splitting device. A group of light devices is placed in front of the lens of the camera. The channel has the same light path exit, and the light path exit is connected to the lens of the camera; the projection device includes a projector, a light splitting device, a polarizer and a metal screen, and a group of the same light splitting device is placed in front of the lens of the projector. The polarizer in the light filtering direction, and the optical path outlet is connected to the lens of the projector. The principle of binocular parallax is adopted, and the optical path of a camera is divided into multiple optical paths by a beam splitting device. The scene in front of the shooting lens will be deflected at a certain angle to reach the lens after passing through the left and right optical path channels. The invention has the beneficial effects of simple structure and concise operation steps, and the hardware cost is greatly reduced compared with two-camera three-dimensional movies because of single-camera shooting and projection.

Description

Translated fromChinese

一种单机偏光立体电影成像系统及成像方法A kind of stand-alone polarization three-dimensional film imaging system and imaging method

技术领域technical field

本发明属于立体电影的拍摄和成像新方法，主要是一种单机偏光立体电影成像系统及成像方法。The invention belongs to a new shooting and imaging method of a three-dimensional film, and mainly relates to a single-machine polarized three-dimensional film imaging system and an imaging method.

背景技术Background technique

三维立体影像拍摄与成像技术是目前国际上热门的技术，被广泛的运用在影视制作领域。它所拍摄的图像具有视觉冲击力，观众戴上特殊的眼镜后观看的画面能浮出或陷入幕布。随着3D电影技术不断进步和完善，目前已经面世了不少完整的3D立体电影的剧情长片。如今，IMAX巨幕电影也开始与3D立体电影结合。1985年的筑波博览会上展出了70毫米大银幕彩色立体电影。1959年，中国拍摄了第一部双机偏光立体电影。Three-dimensional image shooting and imaging technology is currently a popular technology in the world, and is widely used in the field of film and television production. The images it captures are so visually stunning that viewers don special glasses that float or sink into the curtain. With the continuous improvement and improvement of 3D movie technology, many complete 3D stereoscopic feature films have been released. Today, IMAX giant-screen movies have also begun to combine with 3D stereoscopic movies. At the Tsukuba Expo in 1985, a 70mm large-screen color stereoscopic film was exhibited. In 1959, China shot the first two-camera polarized three-dimensional film.

现在的三维立体影像是用两个镜头如人眼那样从两个不同方向同时拍摄下景物的像，制成电影胶片；在放映时，通过两个放映机，把用两个摄影机拍下的两组胶片同步放映，使这略有差别的两幅图像重叠在银幕上，并且在每架电影机前装一块偏振片，它的作用相当于起偏器，从两架放映机射出的光通过偏振片后，就成了偏振光，左右两架放映机前的偏振片的偏振化方向互相垂直，因而产生的两束偏振光的偏振方向也互相垂直，这两束偏振光投射到银幕上再反射到观众处，偏振光方向不改变，观众用上述的偏振眼镜观看，每只眼睛只看到相应的偏振光图象，即左眼只能看到左机映出的画面，右眼只能看到右机映出的画面，物体在左右眼中分别产生一个像，这两个略微不同的像经过人的大脑叠合，就会产生立体感觉，这就是立体电影的原理。The current three-dimensional stereoscopic image is to use two lenses to shoot images of the scene from two different directions at the same time as the human eye, and make it into a movie film; The film is projected synchronously, so that the two slightly different images are superimposed on the screen, and a polarizer is installed in front of each movie machine, which acts as a polarizer, and the light emitted from the two projectors passes through the polarizer. , it becomes polarized light. The polarization directions of the polarizers in front of the left and right projectors are perpendicular to each other, so the polarization directions of the two polarized lights produced are also perpendicular to each other. These two beams of polarized light are projected on the screen and then reflected to the audience. , the polarized light direction does not change, and the audience watches with the above-mentioned polarized glasses, each eye can only see the corresponding polarized light image, that is, the left eye can only see the picture reflected by the left camera, and the right eye can only see the right camera In the reflected picture, the object produces an image in the left and right eyes respectively, and the two slightly different images are superimposed by the human brain to produce a three-dimensional feeling, which is the principle of a three-dimensional movie.

目前的立体电影观看方式有(1)光分法，电影院中普遍采用。现在有不少影院都拥有3D立体放映厅，放映时通过两个放映机来播放两个摄影机拍下的电影，在屏幕上就会同步出现两组有差别的图像。(2)分色技术法，这是另一种3D立体成像技术，现在也比较成熟，有红蓝、红绿等多种模式，但采用的原理都是一样的。色分法会将两个不同视角上拍摄的影像分别以两种不同的颜色印制在同一副画面中。这样视频在放映是仅凭肉眼观看就只能看到模糊的重影，而通过对应的红蓝等立体眼镜就可以看到立体效果，以红蓝眼镜为例，红色镜片下只能看到红色的影像，蓝色镜片只能看到蓝色的影像，两只眼睛看到的不同影像在大脑中重叠呈现出3D立体效果。(3)时分法，时分法是NVIDIA现在主推的一项应用，需要显示器和3D眼镜的配合来实现3D立体效果。时分法所采用的立体眼镜构造最为复杂，当然成本也最高。两个镜片都采用电子控制，可以根据显示器的输出情况进行状态的切换，镜片的透光、不透光切换使得人眼只能看到对应的画面(透光状态下)，双眼看到不同的画面就能够达到立体成像的效果。(4)光栅式，这种方法能让接收的电视节目能立体化，我国现已制造出光栅式的立体电视机，但光栅式也有缺点，就是清晰度和其它的立体相比要差些，只有在非常大的电视上清晰度稍高，这也使成本的价格大幅度升高。(5)全真式，由德国人托马斯·侯亨赖克发明的当今世界上唯一成功的全真立体电视技术，这项立体电视技术与全世界原有各制式电视设备兼容，从电视制作、播出系统，到用户的家庭电视机，均无需增添任何设备和投资，只是在拍摄立体节目时，在摄像机上加装特殊装置即可。观众收看节目时，只需戴上一付特制的三维眼镜即可。眼镜成本低廉，经国家卫生部门鉴定，不会对眼睛产生副作用。如果不戴眼镜和看普通电视没有区别，目前这样的节目很少，这项技术面临淘汰。缺点是节目源少，立体效果并不是非常出色。(6)观屏镜，以前专用于看立体相机拍的图片对，图片对一般左右呈现。现在这种观屏镜也可看左右型立体电影。缺点是看图像或电影时最多只能是屏幕一半大小，优点是非常清晰。(7)全息式，这种目前无法推广。在各个角度看上去都是立体的，不用立体眼镜。苏联在70年代研试了全息立体电影，观看时不必戴眼镜，有很大的影像亮度范围。由于观众眼睛的视觉调节和收敛是自然的，不会引起过分紧张和疲劳，观众只要转动头部，即可看到如同实物那样的位置变化，比普通电影有更大的深度感，就象真实物体那样。这种电影仍在研究试验阶段。Present three-dimensional film viewing mode has (1) light division method, generally adopts in the cinema. Many theaters now have 3D stereoscopic projection halls. During the screening, two projectors are used to play movies taken by two cameras, and two groups of different images will appear simultaneously on the screen. (2) Color separation technology, which is another 3D stereoscopic imaging technology, is relatively mature now, and there are multiple modes such as red and blue, red and green, but the principles adopted are the same. The color separation method prints images taken from two different viewing angles in two different colors on the same frame. In this way, when the video is projected, you can only see a blurry ghost when you watch it with the naked eye, but you can see the three-dimensional effect through the corresponding red and blue stereoscopic glasses. Taking the red and blue glasses as an example, you can only see red under the red lens. The blue lens can only see the blue image, and the different images seen by the two eyes are superimposed in the brain to present a 3D stereoscopic effect. (3) Time-division method, time-division method is an application mainly promoted by NVIDIA, which needs the cooperation of monitor and 3D glasses to realize 3D stereoscopic effect. The structure of the three-dimensional glasses adopted by the time-division method is the most complicated, and of course the cost is also the highest. The two lenses are electronically controlled, and the state can be switched according to the output of the display. The light-transmitting and opaque switching of the lens makes the human eye only see the corresponding picture (in the light-transmitting state), and the eyes see different images. The picture can achieve the effect of three-dimensional imaging. (4) Grating type, this method can make the received TV programs three-dimensional. my country has now produced a grating type stereo TV set, but the grating type also has disadvantages, that is, the definition is worse than other three-dimensional ones. The resolution is only slightly higher on very large TVs, which also drives up the price of the cost substantially. (5) Full-truth mode, the only successful full-true stereoscopic TV technology in the world today invented by German Thomas Hohenreich. This stereoscopic TV technology is compatible with all original TV equipment in the world. There is no need to add any equipment or investment to the broadcasting system or the user's home TV set. It is only necessary to install a special device on the camera when shooting a three-dimensional program. When the audience watches the program, they only need to wear a pair of special three-dimensional glasses. Glasses are cheap and will not cause side effects on the eyes after being appraised by the national health department. If there is no difference between not wearing glasses and watching ordinary TV, there are very few such programs at present, and this technology is facing obsolescence. The disadvantage is that there are few program sources and the three-dimensional effect is not very good. (6) Viewing mirror, which was used to look at the picture pairs taken by the stereo camera in the past, and the picture pairs are generally presented left and right. Now this viewing mirror can also watch left and right type stereoscopic movies. The disadvantage is that when watching images or movies, it can only be half the size of the screen at most, and the advantage is that it is very clear. (7) Holographic type, which cannot be promoted at present. It looks three-dimensional from all angles, without stereoscopic glasses. In the 1970s, the Soviet Union experimented with holographic stereoscopic movies, which can be viewed without glasses and have a large range of image brightness. Since the visual adjustment and convergence of the audience's eyes is natural, it will not cause excessive tension and fatigue. As long as the audience turns their heads, they can see the position changes like the real thing, which has a greater sense of depth than ordinary movies, just like the real thing. Objects like that. This film is still in the experimental stage of research.

立体电影采用幕前辐射状半锥形透镜光栅，受观众厅座位区位置的严格限制，观众头部移动后立体效果会消失。在戴眼镜观看的立体电影中，广泛采用着彩色眼镜法和偏光眼镜法。彩色眼镜法是把左右两个视角拍摄的两个影像，分别以红色和蓝色重叠印到同一画面上，制成一条电影胶片。放映时可用一般放映设备，但观众需戴一片为红另一片为蓝色的眼镜。使通过红镜片的眼睛只能看到红色影像，通过蓝色镜片的眼睛只能看到蓝色影像。此法的缺点是观众两眼色觉不平衡，容易疲劳；优点是不需要改变放映设备。初期的立体电影常用这种方法。1985年日本筑波国际科技博览会上展出了采用这种方法的球幕黑白电影，效果更佳。Stereoscopic movies use a radial semi-conical lens grating in front of the screen. Due to the strict restrictions on the seating area of the auditorium, the stereoscopic effect will disappear after the audience moves their heads. In the three-dimensional movie watched with glasses, the color glasses method and the polarized glasses method are widely used. The color glasses method is to overlap and print two images taken from the left and right perspectives on the same screen in red and blue respectively to make a film. General projection equipment can be used during the screening, but the audience needs to wear glasses with one red and the other blue. Eyes with red lenses can only see red images, and eyes with blue lenses can only see blue images. The disadvantage of this method is that the audience's color vision is unbalanced and they are prone to fatigue; the advantage is that there is no need to change the projection equipment. This method was commonly used in early stereoscopic films. On the Tsukuba International Science and Technology Exposition in Japan in 1985, a dome black and white film using this method was exhibited, and the effect was better.

偏光眼镜法的立体电影，从1922年开始一直为各国所重视，有些国家已和大视野的电影相结合，拍成质量更高、效果更好的彩色立体电影。这种电影在放映时，左右画面以偏振轴互为90°的偏振光放映在不会破坏偏振方向的金属幕上，成为重叠的双影，观看时观众戴上偏振轴互为90°，并与放映画面的偏振光相应的偏光眼镜，即可把双影分开获得立体效果。由于制作和放映工艺的不同，偏光立体电影有双机和单机之分。单机偏光立体电影是采用摄影机拍成左右立体偶画面，通过特殊光学装置将左右立体偶合成到同一画幅上下两部分，实行上下排列，各占两个片孔，即为单机立体影片画幅。放映机配偏光偏转镜后，便能放出单机立体电影。单机偏光立体电影的优点是：节约一半的电影胶片；使用一台放映机放映，节约设备投资；放映时双画面不会产生错位，确保左右画面完全一致。缺点是：由于画面面积减少一半，固画面的信息量光通量也降低。双机偏光立体电影的缺点是：拍摄和放映无法完全使两台机器同步。The three-dimensional film of the polarizing glasses method has been paid attention to by various countries since 1922. Some countries have combined it with the film of the large field of view to make a color three-dimensional film with higher quality and better effect. When this kind of film is projected, the left and right pictures are projected on the metal screen with the polarization axes of 90° to each other on the metal screen that will not destroy the polarization direction, and become overlapping double images. Polarized glasses corresponding to the polarized light of the projection screen can separate the double image to obtain a three-dimensional effect. Due to the difference in production and projection techniques, polarized stereoscopic films can be divided into dual-camera and single-camera. The stand-alone polarized three-dimensional film uses a camera to shoot a left and right three-dimensional picture, and the left and right three-dimensional couple is synthesized into the upper and lower parts of the same frame through a special optical device. After the projector is equipped with a polarizing deflecting mirror, it can emit stand-alone stereoscopic movies. The advantages of stand-alone polarized 3D movies are: saving half of the movie film; using one projector to project, saving equipment investment; double-screen dislocation will not occur during projection, ensuring that the left and right images are completely consistent. The disadvantage is that because the screen area is reduced by half, the amount of information and luminous flux of the fixed screen is also reduced. The disadvantage of dual-machine polarized stereoscopic film is that the two machines cannot be fully synchronized for shooting and projection.

发明内容Contents of the invention

本发明要解决上述现有技术的缺点，提供一种单机偏光立体电影成像系统及成像方法，使用单机与分光装置实现三维影像的拍摄和播放。The present invention aims to solve the above-mentioned shortcomings of the prior art, and provides a stand-alone polarized three-dimensional film imaging system and imaging method, which uses a stand-alone and a spectroscopic device to realize shooting and playing of three-dimensional images.

本发明解决其技术问题采用的技术方案：这种单机偏光立体电影成像系统，包括拍摄装置和放映装置，所述拍摄装置包括摄像机和分光装置，在摄像机的镜头前放置一组分光装置，分光装置具有多光路通道，多光路通道具有同一光路出口，光路出口连通摄像机的镜头；放映装置包括投影仪、分光装置、偏振片和金属幕布，金属幕布为立体电影播放时使用的幕布。投影仪的镜头前放置一组相同的分光装置(与摄像机的镜头前放置一组分光装置相同)，分光装置具有多光路通道，在多光路通道前分别加一片不同滤光方向的偏振片，多光路通道具有同一光路出口，光路出口连通投影仪的镜头。The technical scheme adopted by the present invention to solve its technical problems: this stand-alone polarized stereoscopic film imaging system includes a shooting device and a projection device, and the shooting device includes a video camera and a beam splitter, and a group of beam splitters and a beam splitter are placed in front of the lens of the camera. There are multiple light path channels, the multi-light path channels have the same light path exit, and the light path exit is connected to the lens of the camera; the projecting device includes a projector, a light splitting device, a polarizer and a metal curtain, and the metal curtain is a curtain used when playing a three-dimensional movie. A group of identical beam splitters is placed in front of the lens of the projector (same as a group of beam splitters placed in front of the camera lens). The light path channel has the same light path exit, and the light path exit is connected to the lens of the projector.

所述分光装置包括第一反射镜组和第二反射镜组，第一反射镜组包括第一左反射镜和第一右反射镜，第二反射镜组包括第二左反射镜和第二右反射镜，第一左反射镜与第二左反射镜之间构成左光路通道；第一右反射镜与第二右反射镜之间构成右光路通道，左光路通道、右光路通道沿镜头纵向中心线对称，此时被拍摄的画面分别经左光路通道和右光路通道后成像的区域相同。The spectroscopic device includes a first mirror group and a second mirror group, the first mirror group includes a first left mirror and a first right mirror, and the second mirror group includes a second left mirror and a second right mirror. Mirrors, the left optical path channel is formed between the first left reflector and the second left reflector; the right optical path channel is formed between the first right reflector and the second right reflector, the left optical path channel and the right optical path channel are along the longitudinal center of the lens Line symmetry, at this time, the imaged areas of the captured picture after passing through the left optical path channel and the right optical path channel respectively are the same.

所述左光路通道和右光路通道的夹角成60°～90°。The angle between the left optical path channel and the right optical path channel is 60°-90°.

金属银幕由于采用特殊金属材料涂层，使投影设备投射出的天然光经过偏振片滤光变成的偏振光不会能量损失，这样从金属幕布上反射出来的光还是偏振光而不会还原成天然光。人带上偏振片眼镜，偏振片眼镜也是可使纵向光或横向光一种透过，一种遮蔽。因此人的左眼前的偏振片眼镜可以让左眼只看见纵向光或横向光一种投影在金属立体电影幕布上的图像，右眼前的偏振片眼镜可以让右眼只看见另一种偏振光在金属立体电影幕布上的图像。由于左眼只看到一种偏振光呈现的标定图图像，右眼只看到另一种偏振光呈现的标定图图像，所以人眼看到的图像经过大脑处理可以看到幕布上的标定点是凸起或凹进幕布。Because the metal screen is coated with a special metal material, the natural light projected by the projection device is filtered by the polarizer and becomes polarized light without energy loss, so that the light reflected from the metal screen is still polarized light and will not be reduced to natural light. People wear polarized glasses, which can also make vertical light or horizontal light pass through and shield. Therefore, the polarizer glasses in front of the left eye of a person can make the left eye only see the image of vertical light or horizontal light projected on the metal three-dimensional movie screen, and the polarizer glasses in front of the right eye can make the right eye only see another kind of polarized light projected on the metal screen. Image on a stereoscopic movie screen. Since the left eye only sees the calibration chart image presented by one polarized light, and the right eye only sees the calibration chart image presented by the other polarized light, the image seen by the human eye can be seen by the brain after processing the calibration point on the screen. Raise or recess the curtain.

本发明所述的这种单机偏光立体电影成像方法，采用了双目视差的原理，采用分光装置将一部摄像机的光路分成了多个光路(如可以是左、右两路)，拍摄镜头前的景像通过左、右光路通道后会经过一定角度的偏转达到镜头。具体步骤如下：This stand-alone polarized three-dimensional film imaging method of the present invention adopts the principle of binocular parallax, and adopts a light splitting device to divide the optical path of a video camera into multiple optical paths (such as left and right paths), After the scene passes through the left and right optical path channels, it will be deflected at a certain angle and reach the lens. Specific steps are as follows:

(1)、进行拍摄时，物体置于分光装置的正前方，启动摄像机进行拍摄，在摄像机及分光装置前的景像经过左、右光路通道后经过一定角度的偏转分别进入镜头，拍摄到的画面左边是左光路通道拍摄到的画面，画面右边是右光路通道拍摄到的画面，由于是单机拍摄，所以左右部分的画面是同步的。(1) When shooting, the object is placed directly in front of the spectroscopic device, and the camera is started to shoot. The scene in front of the camera and the spectroscopic device passes through the left and right optical path channels and then enters the lens after a certain angle of deflection. The left side of the screen is the picture captured by the left optical channel, and the right side of the screen is the picture captured by the right optical channel. Since it is shot by a single camera, the left and right parts of the picture are synchronized.

(2)、把投影仪放到之前摄像机的位置，在投影仪前放置与之前拍摄时使用的相同的分光装置；并在左光路通道、右光路通道前分别加一片不同滤光方向的偏振片；偏振片是可以使天然光变成偏振光的光学元件。它对入射光具有遮蔽和透过的功能，可使纵向光或横向光一种透过，一种遮蔽。接着投影一张立体标定图，立体标定图是通过摄像机与分光装置拍摄一张放在摄像机正前方的普通标定图产生，调整投影仪与分光装置的距离，使投影在金属幕布上的标定图中的点错位显示；(2) Put the projector at the position of the previous camera, and place the same spectroscopic device in front of the projector as used in the previous shooting; and add a polarizer with different filtering directions in front of the left optical path channel and the right optical path channel ; Polarizer is an optical element that can make natural light into polarized light. It has the function of shielding and passing through the incident light, which can make the vertical light or horizontal light pass through and shield. Then project a stereo calibration map. The stereo calibration map is produced by shooting a common calibration map placed directly in front of the camera through the camera and the spectroscopic device. Adjust the distance between the projector and the spectroscopic device so that the calibration map projected on the metal screen point dislocation display;

(3)、把之前摄像机拍摄的景像投影到金属幕布上，画面通过分光装置及偏振片投射后，左边部分画面和右边部分画面在金属幕布上会相互重叠且错开一定的距离，戴上偏振片眼镜观看幕布上的画面，就能看到画面中的物体呈现立体效果。(3) Project the scene captured by the previous camera onto the metal screen. After the screen is projected through the beam splitter and the polarizer, the left part of the screen and the right part of the screen will overlap and stagger a certain distance on the metal screen. Wear a polarizer If you watch the picture on the screen with a pair of glasses, you can see the objects in the picture present a three-dimensional effect.

本发明有益的效果是：结构简单、操作步骤简洁，由于采用了分光装置，不同的两个角度画面是通过左光路通道、右光路通道采集得到，这两个角度的画面能够构成立体画面。由于光传达的画面信息是同时到达单机镜头的，因此画面拍摄同步率是一致的，而光投影画面到立体电影幕布上也上同时到达，而投影的画面是经过如上过程拍摄的，因此每一祯的画面都是同步的，又由单个投影设备投影播放，所以投影的画面也是同步的。这就解决了双机立体电影在拍摄和播放时画面的祯数无法绝对同步的问题。人在观看时，左右眼是同时接受画面，因此会减轻视觉疲劳，由于是单机拍摄和放映，因此硬件成本与双机立体电影相比也大大降低。The beneficial effects of the present invention are: simple structure, simple operation steps, because of the use of light splitting device, two different angle pictures are collected through the left optical path channel and the right optical path channel, and the pictures of these two angles can form a three-dimensional picture. Since the picture information conveyed by light reaches the stand-alone lens at the same time, the synchronization rate of the picture shooting is consistent, and the light projection picture arrives on the three-dimensional movie screen at the same time, and the projected picture is shot through the above process, so every time The pictures of the frame are all synchronized, and are projected and played by a single projection device, so the projected pictures are also synchronized. This solves the problem that the number of frames of the picture cannot be absolutely synchronized when the two-camera stereoscopic movie is shot and played. When people are watching, the left and right eyes receive the picture at the same time, so it will reduce visual fatigue. Because it is shot and projected by a single camera, the hardware cost is also greatly reduced compared with the two-camera stereoscopic film.

附图说明Description of drawings

图1是本发明的拍摄系统组成图。Fig. 1 is a composition diagram of the shooting system of the present invention.

图2是本发明的投影系统组成图。Fig. 2 is a composition diagram of the projection system of the present invention.

图3是人观看幕布感受立体电影组成图。Fig. 3 is a composition diagram of a stereoscopic movie experienced by people watching the curtain.

具体实施方式Detailed ways

下面结合附图和实施例对本发明作进一步说明：Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

参照图1所示，一个拍摄镜头5、一组分光装置和被拍摄物体8。分光装置包括第一反射镜组、第二反射镜组，第一反射镜组包括第一左反射镜组1和第一右反射镜组2，第二反射镜组包括第二左反射镜组4和第二右反射镜组3，第一左反射镜1与第二左反射镜4的角度可根据要求进行调节，第一左反射镜1与第二左反射镜4构成左光路通道6；第一右反射镜2与第二右反射镜3角度可根据要求进行调节，第一右反射镜2与第二右反射镜3构成右光路通道7。第二左反射镜4与第二右反射镜3可根据要求进行调节，第一左反射镜1与第一右反射镜2角度可根据要求进行调节；第一左反射镜1与第二左反射镜4的角度等同与第一右反射镜2与第二右反射镜3的角度。Referring to FIG. 1 , a photographing lens 5 , a group of light devices and an object 8 to be photographed. The spectroscopic device includes a first mirror group and a second mirror group, the first mirror group includes a first left mirror group 1 and a first right mirror group 2, and the second mirror group includes a second left mirror group 4 And the second right reflector group 3, the angle of the first left reflector 1 and the second left reflector 4 can be adjusted according to requirements, the first left reflector 1 and the second left reflector 4 constitute the left optical path channel 6; The angle between the first right reflector 2 and the second right reflector 3 can be adjusted according to requirements, and the first right reflector 2 and the second right reflector 3 form a right optical path channel 7 . The second left reflector 4 and the second right reflector 3 can be adjusted according to requirements, and the angle of the first left reflector 1 and the first right reflector 2 can be adjusted according to requirements; the first left reflector 1 and the second left reflector The angle of the mirror 4 is equal to the angle of the first right mirror 2 and the second right mirror 3 .

参照图2，投影仪9，立体电影的金属幕布10，投影在金属幕布上的左光路通道物体影像11，投影在金属幕布上的右光路通道物体影像12，左偏振片13和右偏振片14。With reference to Fig. 2,projector 9, themetal curtain 10 of three-dimensional film, the left optical pathchannel object image 11 projected on the metal curtain, the right optical pathchannel object image 12 projected on the metal curtain, leftpolarizer 13 andright polarizer 14 .

参照图3，偏振眼镜左镜片15，偏振眼镜右镜片16，人左眼17，人右眼18，左光路通道偏振光物体影像19，右光路通道偏振光物体影像20，人大脑重新组合的纵深物体影像21。Referring to Fig. 3, left lens 15 of polarized glasses, right lens 16 of polarized glasses, human left eye 17, human right eye 18, left optical path channel polarized object image 19, right optical path channel polarized object image 20, depth of recombination of human brain Object image21.

本发明所述的这种单机偏光立体电影成像方法，具体步骤如下：This stand-alone polarization three-dimensional movie imaging method described in the present invention, concrete steps are as follows:

被拍摄景物8置于分光装置的正前方，根据拍摄的距离调整分光装置第一反射镜组、第二反射镜组的角度。观察摄像画面，调整分光装置的角度以及位置，令拍摄景物8处在左光路通道画面、右光路通道画面的正中。调整完毕后摄像镜头5开始拍摄，直到拍摄完毕。The scene 8 to be photographed is placed directly in front of the spectroscopic device, and the angles of the first mirror group and the second mirror group of the spectroscopic device are adjusted according to the shooting distance. Observe the camera picture, adjust the angle and position of the light splitting device, so that the shooting scene 8 is in the middle of the left optical channel picture and the right optical channel picture. After the adjustment, the camera lens 5 starts shooting until the shooting is completed.

用投影仪9的镜头投影出标定图对整个设备进行标定，调整投影仪9与分光装置之间的距离，令投影在金属幕布10上的标定图案，在人戴上立体眼镜观察是具有立体效果的。接着投影出拍摄镜头5拍摄的视频。人戴上偏振片眼镜观看立体电影的金属幕布10。Use the lens of theprojector 9 to project a calibration diagram to calibrate the entire device, adjust the distance between theprojector 9 and the beam splitting device, so that the calibration pattern projected on themetal curtain 10 has a three-dimensional effect when people wear stereoscopic glasses. of. Then the video shot by the shooting lens 5 is projected. People put on polarizer glasses to watchmetal curtain 10 of stereoscopic movie.

视频投影在立体电影的金属幕布10上的影像会有两个，分别是左光路通道物体影像11和右光路通道物体影像12。左光路通道中的左偏振片13使投影仪9投影到左光路通道的天然光变成一种方向的偏振光，假设为x方向(横方向)的偏振光，过滤了y方向(纵方向)的偏振光；右光路通道中的右偏振片14使投影仪9投影到左光路通道的天然光变成另一种方向的偏振光，假设为y方向的偏振光，过滤了x方向的偏振光。左光路通道物体影像11通过左偏振片13的滤光后，使只有x方向的偏振光投影到了立体电影幕布上，形成左光路通道偏振物体影像19；右光路通道物体影像12通过右偏振片14的滤光后，使只有y方向的偏振光投影到了立体电影幕布上，形成右光路通道偏振光物体影像20。There will be two images projected on themetal curtain 10 of the stereoscopic movie, which are theobject image 11 of the left optical path channel and theobject image 12 of the right optical path channel. Theleft polarizer 13 in the left optical path channel makes the natural light projected to the left optical path channel by theprojector 9 into a polarized light in a direction, assuming that it is polarized light in the x direction (horizontal direction), and filters the y direction (vertical direction) polarized light; theright polarizer 14 in the right optical path channel makes the natural light projected by theprojector 9 onto the left optical path channel become polarized light in another direction, assuming that it is polarized light in the y direction, and filters the polarized light in the x direction . After the left opticalchannel object image 11 is filtered by theleft polarizer 13, only the polarized light in the x direction is projected onto the three-dimensional movie screen to form the left optical channel polarized object image 19; the right opticalchannel object image 12 passes through theright polarizer 14 After the light is filtered, only the polarized light in the y direction is projected onto the stereoscopic movie screen to form the polarized light object image 20 in the right optical path channel.

人左眼17前的偏振眼镜左镜片15假设为只让x方向的偏振光通过；人右眼18前的偏振眼镜右镜片16假设只让y方向的偏振光通过。因此人左眼17只看到通过左偏振片13的滤光影像，使只有x方向的偏振光投影到了立体电影幕布上的左光路通道偏振光物体影像19经过偏振眼镜左镜片15进入人左眼17；人右眼18只看到通过右偏振片14的滤光影像，使只有y方向的偏振光投影到了立体电影幕布上右光路通道偏振光物体影像20经过偏振眼镜右镜片16进入人右眼18。人左眼17看到的左光路通道偏振光物体影像19和人右眼18看到的右光路通道偏振光物体影像20经过大脑综合后，形成人大脑重新组合的纵深物体影像21。由于人大脑重新组合的纵深物体影像21的位置是在立体电影金属幕布的后面，人脑会认为人大脑重新组合的纵深物体影像21是“凹”进幕布之中，从而使投影的物体影像在人眼观看时具有立体感。The left lens 15 of the polarized glasses in front of the left eye 17 of the person is assumed to only allow the polarized light in the x direction to pass through; the right lens 16 of the polarized glasses in front of the right eye 18 of the person is assumed to only allow the polarized light in the y direction to pass through. Therefore people's left eye 17 only sees the filtered image byleft polarizer 13, makes only the polarized light of x direction be projected onto the left optical path channel polarized light object image 19 on the three-dimensional movie screen and enters people's left eye through polarized glasses left glass 15 17; people's right eye 18 only sees the filter image passing through theright polarizer 14, so that only the polarized light in the y direction is projected onto the stereoscopic movie screen, and the polarized light object image 20 of the right optical path channel passes through the right lens 16 of polarized glasses and enters the right eye of the person 18. The left optical channel polarized object image 19 seen by the human left eye 17 and the right optical channel polarized object image 20 seen by the human right eye 18 are synthesized by the brain to form a deep object image 21 recombined by the human brain. Since the position of the depth object image 21 recombined by the human brain is behind the metal screen of the three-dimensional movie, the human brain will think that the depth object image 21 recombined by the human brain is "concave" into the screen, so that the projected object image is in the It has a three-dimensional effect when viewed by the human eye.

除上述实施例外，凡采用等同替换或等效变换形成的技术方案，均落在本发明要求的保护范围。Except for the above-mentioned embodiments, all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (1)

Translated fromChinese

1.一种单机偏光立体电影成像系统的成像方法，其特征在于：1. an imaging method of a stand-alone polarized stereoscopic film imaging system, characterized in that:（1）、进行拍摄时，物体置于分光装置的正前方，启动摄像机进行拍摄，在摄像机及分光装置前的景像经过左、右光路通道后经过一定角度的偏转分别进入镜头，拍摄到的画面左边是左光路通道拍摄到的画面，画面右边是右光路通道拍摄到的画面，左右部分的画面同步；(1) When shooting, the object is placed directly in front of the spectroscopic device, and the camera is started to shoot. The scene in front of the camera and spectroscopic device passes through the left and right optical path channels and enters the lens after a certain angle of deflection. The left side of the screen is the picture captured by the left optical channel, and the right side of the screen is the picture captured by the right optical channel, and the left and right parts of the picture are synchronized;（2）、把投影仪放到之前摄像机的位置，在投影仪前放置与之前拍摄时使用的相同的分光装置；并在左光路通道、右光路通道前分别加一片不同滤光方向的偏振片；接着投影一张立体标定图，立体标定图是通过摄像机与分光装置拍摄一张放在摄像机正前方的普通标定图产生，调整投影仪与分光装置的距离，使投影在金属幕布上的标定图中的点错位显示；(2) Put the projector at the position of the previous camera, and place the same spectroscopic device in front of the projector as used in the previous shooting; and add a polarizer with different filtering directions in front of the left optical path channel and the right optical path channel respectively ; Then project a stereo calibration map, the stereo calibration map is produced by shooting a common calibration map placed in front of the camera through the camera and the spectroscopic device, adjust the distance between the projector and the spectroscopic device, so that the calibration map projected on the metal screen The points in the display are misplaced;（3）、把之前摄像机拍摄的景像投影到金属幕布上，画面通过分光装置及偏振片投射后，左边部分画面和右边部分画面在金属幕布上会相互重叠且错开一定的距离，戴上偏振片眼镜观看幕布上的画面，就能看到画面中的物体呈现立体效果。(3) Project the scene captured by the previous camera onto the metal screen. After the screen is projected through the beam splitting device and the polarizer, the left part of the screen and the right part of the screen will overlap and stagger a certain distance on the metal screen. Wear a polarizer If you watch the picture on the screen with a pair of glasses, you can see the objects in the picture present a three-dimensional effect.

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