英语翻译A human face can be modeled using PhotoModeler Scanner (PM Scanner) using one or more pairs of stereo photos.Sometimes it is possible with a single camera,but due to the subtle movement of a human face (despite all efforts of your model t

英语翻译A human face can be modeled using PhotoModeler Scanner (PM Scanner) using one or more pairs of stereo photos.Sometimes it is possible with a single camera,but due to the subtle movement of a human face (despite all efforts of your model t
英语翻译
A human face can be modeled using PhotoModeler Scanner (PM Scanner) using one or more pairs of stereo photos.Sometimes it is possible with a single camera,but due to the subtle movement of a human face (despite all efforts of your model to keep still!),you will usually get a better result with two or more synchronized cameras.
The following sequence of steps is based on the assumption that you know the basics of marking and referencing points (target and non-target points),that you are familiar with the basic steps of creating DSM’s with PM Scanner,and that you have a well calibrated camera.
For more basic instructions the PM Scanner tutorial projects and videos are a good place to start.
This article is closely related to the article here.There are links to particular sections of the article throughout this one.
Scene Setup and Photography
1.Place a series of targets on a wall or a rig so that targets surround the face.Ensure as many of the targets are visible in as many of the photos as possible.Coded targets make orientation and setup phase very efficient.
2.Have your face model sitting comfortably and still.If using just one camera,the model will need to be extremely still during photography.
The following shows a typical setup (one photo of a 4-synchronized cameras setup):
3.If using synchronized cameras,set up your cameras on tripods and test your synchronization (using a remote control or other remote triggering system).
Arrange your cameras in a configuration similar to this (if not using synchronized cameras,move your camera to these positions as quickly as possible before your model moves!) and take the photos:
The angles between these positions will be small and close to parallel.There should not be any more than a few degrees of toe-in angle.
Usually 4 photos will be enough to model the face and parts of the sides of the head.If you want to model the front,sides,and back,you’ll need to make sure your photo pairs cover the entire area of interest,and you’ll need to make sure that you have enough targets in view to adequately orient your photos.
You may want to include another photo from the side or above at a greater angle to assist in camera orientation.The camera in red above suggests this.Adding this photo will help increase the angle of your referenced points and will help strengthen the solution.

英语翻译A human face can be modeled using PhotoModeler Scanner (PM Scanner) using one or more pairs of stereo photos.Sometimes it is possible with a single camera,but due to the subtle movement of a human face (despite all efforts of your model t
一个人可以被使用PhotoModeler扫描(点)使用一个或多个扫描成双成对的立体照片.有时这是可能的,有一个单一的相机,但由于人类面孔的微妙的运动(尽管努力保持安静!你的模型),你通常会得到一个更好的结果与两种或两种以上的同步摄像机.
下面的步骤是基于假定你知道基本标志,参照点对点(目标),和你所熟悉的基本步骤,以创造需求侧管理的下午,你已经扫描了校正好相机.
为更多的基本指令的项目和视频教程的扫描是一个很好的开始.
这篇文章是密切相关的.有链接到特定的文章在这一个.
现场安装和摄影
1.一系列的目标的位置在墙上或钻机使目标围绕的脸.确保尽可能多的目标是在尽可能多的照片.编码的目标定位和启动阶段做出很能干的人.
2.有你的脸型坐在舒适,还.如果只是用一台照相机,该模型需要非常仍然在摄影.
下面显示了一个典型的安装(某张照片4-synchronized相机设置).
3.如果使用同步摄像机,建立你的相机在三脚和测试你的同步化(用一个遥控器或者其他远程触发系统).
你的照相机在配置安排类似(如果不使用同步摄像机,移动你的照相机到这些位置之前你尽快移动!),模型的照片.
这些位置之间的夹角将小和接近平行.不该有任何超过几度toe-in角度.
通常就足够了,4照片的脸和部分模型的头部.如果你想模型,侧面和后面,你需要保证你的图片配对