英语翻译Start the Project and get your photos oriented 1.Start a

英语翻译Start the Project and get your photos oriented 1.Start a PhotoModeler Scanner Points-based project and import your photos.Alternately use an Automatic project if using RAD targets (note the steps below correspond to a Points-based project).2.Mark the coded targets using the Automatic Target Marking tool in PM Scanner (Marking menu).If you are not using targets,mark and reference your points manually.Ensure your points are accurately marked and properly referenced,and process the project.3.Check your point mark residuals (see Point Table) and make sure all points have residuals of less than 1.0,which indicates a well-solved model and strong camera orientations.4.Save the project.5.Idealize the photos (Project menu / Idealize Project).Reprocess the project.6.Set your project scale.Setting a scale is not mandatory but it makes it easier to relate to the DSM settings such as sample rate and depth range when they are in real world coordinates.7.It is usually a good idea to mark a DSM trim to outline and limit the area to be scanned.This will help speed up the DSM process as only the area of interest will be modeled.It will also help reduce noise around the area of interest.Mark a DSM trim on each photo.You’ll see below that the coded targets are marked and the DSM trim outlines the face,neck and head:Set your DSM options 1.First,set a low-density sample-rate (ie a large value).You’ll want to make sure your settings are appropriate before doing a full detail DSM.Experimenting with a low-density DSM will help speed up the process of finding the optimal settings as you will spend less time waiting for DSM processing.2.Keep the default depth range.3.When modeling a face or a material like skin typically your advanced DSM settings will be:Sub-pixel:OnSuper-sampling factor:2Matching Region Radius:20Texture Type:14.Run the DSM (without Meshing steps) and check that your model is solving reasonably well and the shape of the face can be discerned from the point cloud (ie not a lot of noise,or large gaps between points).5.Evaluate your initial DSM.If the DSM has a lot of noise,go to the ‘Adjusting Depth Range and/or Base Surface’ section below.If it looks reasonable,move to the ‘Densify your Point Cloud’ section below.This looks reasonably close (depth range of +/-25cm):This looks like a lot of noise (depth range of +/-5cm):Adjusting Depth Range and/or Base Surface If your first attempt has a lot of noise,you’ll need to adjust your settings.If you’re confident with your orientations (look for small maxiumum residual as one indicator),the most likely culprit is the depth range setting.A depth range that is too small will not allow PMScanner to find appropriate matches,while one that is too big will also cause problems (esp.true with weak texture we find with human skin).Adjusting the depth range from +/-5cm to +/-25cm resulted in this improved initial DSM: