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1、3D基础知识,山东电视台 新媒体中心,2,3D 的历史,In 1989,Ikegami developed and delivered the world-first one-piece 3D camera“LK-33”.1989年,Ikegami 池上发展了世界第一套的3D一体型摄影机,LK-33.,3,3D Video is 什么是3D 影像.,Needless to say,The original concept of 3D image is to express the illusion of depth perception as human eyes3D 影像的原始概念就是要表达
2、人眼利用对于景深的错觉所产生的立体影像,4,How to express 3D image by camera,As human use two eyes to see an object,using two cameras can express 3D image.当人类使用双眼去看一个物体时,就如同用两支摄影机作3D 摄影的效果,5,How to express 3D image by camera,To put it concretely:更具体地说:Distance between human eyes is about 65mm(人眼间距约65mm)The difference in
3、 image location of an object seen by the left and right eyes(左眼所看到的物体间距与右眼所看到的物体间距不同)The brain uses binocular disparity to extract depth information from the two-dimensional in stereopsis(人脑使用双眼的视差将2D平面的物体仿制为3D 的立体影像),6,How to express 3D image by camera,LEFT,RIGHT,Parallax 视差,7,3D Effect 3D 效果,3D en
4、hancement such as coming-out image or depth perception is created by the viewing cross points of both eyes(=Convergence Point).3D 影像的凸出效果是由聚合点的变化产生的Namely,it is determined by the position of two cameras.也就是说,由两支摄像机间的角度决定,3D Principles:Convergence Point 3D 原理:辐辏角,8,3D Effect 3D 效果,9,3D Effect 3D 效果,3
5、D Principles:Distance of two cameras3D 原理:两个摄像机的距离,3D imaging effect is created by the distance of two eyes,so it is determined by the distance of two cameras.3D 影像的效果由两眼的间距产生,对摄影机来说,就取决于两个摄影机的距离.The more distance two cameras have,the more effect 3D imaging is created.两个摄像机的距离越长，3D效果越大,10,3D Effect
6、3D 效果,11,3D Setting 3D 系統的設定,Place two cameras like human eyes(將两台摄影机如同人眼般放在一起)RigTwo Cameras&Lenses interlocking(將两台摄影机及镜头配置在一起)Interlocking unitDisplays 3D image after Left/Right Image mixing(显示3D 影像-將左右眼影像合成再一起)Monitor Single Link Monitor(单链路信号 3D 监视器)Dual Link Monitor(双链路信号 3D 监视器)Shutter式(快门式)偏
7、光式In case of Single Link,the composer is required to mix two(left/right)images.如果是使用单链路信号,则需要合成器將左右眼影像合成在一起 Details to follow 详如以下说明,12,3D RIGs 3D 支架,Half-Mirror System,Side-by-Side System,The diagonal line in red indicates where the half-mirror is integrated.红色的对角线所示即为Half-mirror 整合的地方,13,3D Rig Co
8、mparison 3D 支架比較,Half-Mirror System,Side-by-Side System,to,to,Camera distance 摄影机距离,to,5 or further,Best object distance最佳拍摄物距离,One camera video,No reverse*1,Video reversing影像反转,HDL-F30、HDL-45A,HDK-79EX、GFCAMHDL-45A、MKC-300HD etc.,Applicable camera model,3ALITY、P+S TECKNIKElement Technica etc.,3ALIT
9、Y、Musashi-OPT etc.,Major RIG manufacturers,*:When a shift adapter is used,video will become reverse in orientation.*:When a shift adapter is used,light amount will drop.,Drops to 50%,No change*2,Light amount进光量,More complicate,simple,Setting设定的难易度,14,Mixed formats for 3D 合成 3D 的格式,L,R,compose,3D mon
10、itor,15,Processor function(3D 效果合成功能),Input 2HD-SDI两路 HD-SDI 输入,Output 1DVI/HDMI 2HD-SDI1路DVI/HDMI 输出或两路 HD-SDI 输出,Mix合成,16,Adjustment 3D 的调整,要求非常精确,差分画面,Optical axis 辐辏角的水平轴焦距調整,Zoom in 及 Zoom out 的焦点必须一致,代表水平轴的调整正确Rotation(两个摄像机的水平调整)Position(两个摄像机的位置调整)特别是摄像机的水平，2个相机的水平的同步很重要,17,A system example(
11、in dual-link),Lch,Rch,ME,2,ME,1,Lch,Rch,V,1,V,2,VTR,ROUTER,SWITCHER,CAMERA,FPU,Lch,Rch,MONITOR,HD SDI,HD SDI,Add optical axis shift rig or half-mirror rig,.,3,D VE SYSTEM,Adds the,3,D,MONITOR,3,D Rig,The above system is an example in dual link to control L/R ch separately.A single link to mix two ca
12、mera video signals is available from the conventional systems.以上的系统是用双链路信号单独去控制左/右ch.用传统的系统合成两路讯号并以链路信号输出,也是可行的方法,如下面介绍的 3种方式.,18,TS-2,MKC-300HD 3D system ForInterBEE2010/10/18 Author:Abe,VFVEStereographer,Composer,SW,sync,Sample-1(MKC-300HD 3D system),3D,19,Features for the sample-1(MKC-300HD 3D sy
13、stem),Low-cost 低成本 Both camera and lens are compact in size,which allows positioning two cameras in 65 mm distance.摄影机及镜头都是轻便小巧型,可将两支摄影机的距离调到65mm*The human eyes are typically in 65 mm distance and this shall be the reference for 3D setup.人眼的平均距离大致上是65mm,这也是3D 的设定的参考数值 Simple system and easy setup.(系
14、统单纯且设定非常简单)The 1/3”CMOS sensor makes large depth of field.1/3吋CMOS 感应器可以拍摄较大的景深*Clear focus and blur-less images are preferable for 3D.对焦清晰及较不模糊的影像是比較多人偏好的3D 系統,20,Sample-1(MKC-300HD 3D system),The simplest camera setup for 3D using current product line池上产品中,最简便的3D系统,2 x MKC-300HDs 两个MKC-300HD 摄影机 M
15、ounting adapter(custom-made)3D 支架 Composer(3D 合成器)3D monitor(3D 监视器),21,TS-2,Controller equipment,Musashi 3D system ver.2ForInterBEE2010/10/18 Author:Abe,Shift adapter,Simultaneous controller box&Focus demand,Zoom demand,Convergence adapter,Musashi RIG,Convergence controller,Processor,Return video f
16、or video adjustments,sync,Sapmle-2 2 x HDS-V10 ENG system,22,Features for the sample-2(2 x HDS-V10 ENG system),The shift adapter can make two lenses setup close together.镜头偏移接座可使两个镜头的距离更接近 The convergence adapter allows remote convergence control.辐辏角接座可遥控调整辐辏角 The GFCAM in TC genlock allows recordin
17、g to editing.GFCAM HDS-V10 一体机使用TC同步录影,方便作3D 剪辑*The video will be recorded in reverse orientation.影像以反向记录 BSH/CPH-200+OCP-200 can make simultaneous controls for two cameras.摄影机选择器/摄影机遥控器 可同时控制两台摄影机 Two lenses can be simultaneously controlled by the controller box.两个镜头可同时被控制盒控制 Side-by-Side setup all
18、ows easy R/L recognition and handling.Side-by-Side 设定可轻易对左/右眼信号确认及处理(cf.Half-Mirror system is NOT easy in R/L recognition and handling)Half-Mirror 系统较不易对左/右眼信号确认及处理,23,The Shift Adapter made by Musashi Optical System Co.（for Side-by-Side system),It allows two lenses setup close together without rest
19、riction of camera body镜头偏移接座可使两个镜头的距离更接近,24,3 ality 3D system at InterBEE2010/10/18 Author:Abe,RIGcontroller,SIP-2100,Stereographer,TS-5,VE,HLM-920WR,sync,Exhibit,3Ality LensControl Unit,ZoomDemand,FocusDemand,Processor,25,Features for the sample-3,A high-end 3D system.最高阶的3D 系统 Half-Mirror system c
20、an adjust two-camera distance from 0 mm to various.Half-Mirror系统可调整两支摄影机的距离从 0 mm 到 不同数值 The Processor(SIP-2100)allows various alignments for precise 3D.3D 合成器(SIP-2100)允许对3D 的不同调校方式 Position and angle for lens&camera can be adjusted by the Rig and other peripheral equipment.摄影机与镜头的位置与角度可由 RIG 及其他周边器材调整 BSH/CPH-200+OCP-200 can make simultaneous controls for two cameras.摄影机选择器/摄影机遥控器 可同时控制两台摄影机,26,3D demo experiences,HDL-F30&Binocle,HDL-45A&P+S TECHNIK,THANK YOU!謝 謝!,
