Latest Contributions by larryzhang

Nikhil, Pls try one of the following two options and see if to fix: [INDENT]1.    Install the Service Pack 5 (if you are using image server 10.0); and then try to �??Export�?? on �??selected�?? raster again; [/INDENT] [INDENT]2.    Directly �??Download Selected Raster�??, if �??selected�?? raster is in TIFF[/INDENT] Regards, ----------------------- Note,[INDENT]For Option 2, if �??selected�?? raster sources are NOT in TIFF, the operation will fail. Personally, it may indicate that the algorithm of �??Export - Download Selected Raster�?? has bugs, at least, in other formats like MrSID, IMG, etc. [/INDENT] ... View more

Timothy,This is a very common question Image Service verses Image Cache. The answer very much depends on your final product. If it is a static image back drop then cache is faster but if image processing is required then image services are better. For a good discussion on this topic see the following blog http://blogs.esri.com/esri/arcgis/2010/05/04/imagery-in-web-applications-should-i-use-a-cached-map-service-or-an-image-service/In either case I can say you should use a mosaic dataset it will display the image faster in ArcMap than you currently see it displaying. You only need image extension to serve the mosaic dataset. However there is a tool at 10.1 which converts an image service to cache which you will also find useful.RegardsGordon Hi, Gordon, At UC 2012 (San Diego), we saw the demo of that tool at 10.1 which converts an image service to caches and feel it is exactly what our customer�??s need (a breakthrough implementation of 10.1). Yes, users should have more flexibility to choose either image service (for analysis) or caches (for performance), even both at same time, from image server. However, after several trials, which are using massive images (3 TB 0.5-m GeoEye covering about 200,000 sqr KM) located at �??dedicated�?? NAS storage over 2-Gigabit corporate network, it takes forever (after weeks, the process still running) to create caches (up to the scale at 1:1000). Obviously, it still can�??t create cache tiles in operation, �??dynamically and effectively�??. Personally, that tool algorithm is highly required to further improve for efficiency. Regards, __________________ Note, On NAS storage against Mosaic Datasets & caching operation, we would like to share our hands-on thoughts: With 10.0, it looks that the mosaic dataset model couldn�??t deal with massive sources located at above NAS over the 1-2 Gigabit corporate network for creation of mosaic datasets (currently, we are using 10 Gigabit SAN network for image server, which is not manageable for IT storage group, when data is growing daily); With 10.1, however, it can create Mosaic Dataset; Besides, on the cache operation with ArcGIS Server 10.1 (if focusing on efficiency when dealing with NAS storages), it looks still not very functional and effective, no matter how to conduct caches (either via �??dynamically�?? cache from image service, or �??directly�?? cache onto images, raster catalogs & mosaic datasets with ArcGIS Server). The above comparison gives us some indications that the algorithms of the mosaic dataset model 10.1 have been significantly improved, but the cache algorithms in 10.1 have not. ... View more

Thanks, Matthias, CE2011.2 is just downloaded and installed. After initial trial, it looks that majority of those issues are well handled in the release of CE 2011.2, including straightforward setup of any ESRI �??spatial reference�?? and �??geo-referenced data�?? (SHP, GDB, terrain, image) and �??textures�?? in the CE project and also convenient interoperation of 3D scene with ArcGIS 10 SP4 and Google Earth /Google Earth Enterprise. Personally, the release 2011.2 is improving and making more sense to us! Thanks, CE team ... View more

On our practice with multipatch import, my comments are put below for your trial: There is No problem at all to import multipatch SHP within CE 2011.1. Please follow the chain: File/Import/CityEngine Layers/ Shapefile Import. It works. There may be some issues (or bugs) within the tool "Layer 3D to Feature Class". So, personally, if you want to do it within ArcGIS 10.0 (SP3 & COLLADA patch as well), especially, your multipatch has textures associated, the tool called �??Multipatch To Collada�?� (Conversion) should be used. It works very well for interoperation between CE and ArcGIS Thank you so much for your help! I really appreciate it!The coding for the normals did the trick exactly! I'm getting the same error from the thread titled "KMZ stuff" when I try to import the KMZ file, so I'm looking forward to the new release! Thanks again! ... View more

Thanks, Matthias, Your prompt assistance and inputs are valuable. hi ! I've posted the info on the forum, so other users can also profit from the work. try an approach like this : classification 1 : VOLUMES http://forums.arcgis.com/threads/51733-classification-approach-towards-(volumetric)-multiPatch-data classification 2 : SURFACE ORIENTATION (use a comp(f) to go from the classified volumes to each polygon) http://forums.arcgis.com/threads/51546-Calculating-shape-slopes classification 3 : SURFACE DIMENSION for each single polygon, test the dimension and accordingly trigger e.g. the texturing of - flat roof surface - facade - metal box surface - .. it all looks a little complex, but once you have a good rule set, you can run this rule over any number of buildings and get good texturing completely automatted. I guess in your case this approach is VERY promising. cheers !:cool: ... View more

On your purpose & description, it may be easy to work with photogrammetry package like Leica LPS, SOCET, or PCI OrthoEngine, which provides camera models, triangulation /resection and bundle adjustment. Please link to http://en.wikipedia.org/wiki/Photogrammetry and http://www.socetgxp.com/content/products/socet-set for more details Hello, I was wondering if someone could point me in the right direction to achieve this? I've got several unreferenced aerial photographs I want to georectify and stitch together. They're taken at slighty different heights and orientation and some are slightly oblique. What would be the best way to go about orientating and stitching them together so they are all mosaiced together in the same image? Any help greatly appreciated! 🙂 ... View more

For ArcGlobe, you should have a license of desktop ESRI ArcGIS with the extension �??3D Analyst�?? in your PC workstation. For ArcGIS Explorer, I am using the official release 1750 from ESRI. Background: When the 3D SHP display is tilted, all 3D features should be touched onto the 'surface' without displacement. Correct? Anyhow, for comparison, those 3D features display correctly in ArcGlobe. Analysis: There may have two issues within ArcGIS Explorer for 3D display: No proper �??tilted�?? display (at least, no good oblique capability) in 3D model; All 3D features display in 3D model does not 'properly' recognize heights of 3D feature class and (or) surface; Or, ESRI 3D feature class (multipatch) has intergation issue within ESRI ArcGIS Explorer 1750. Please open the attached PDF for the details. +++++++++++++ Honestly, I am not sure if those behavior are bugs in ArcGIS Explorer �??3D itself�?? or bugs associated with '3D feature class'. Anyhow, let others discuss on the forum ArcGIS Explorer I have gotten an other input concerning �??ArcGIS Explorer does not support 3D display�?�. --> It does�?� Are you using ArcGIS Explorer Online (which is 2D-only), or did you miss the button on the toolbar which switches from 2D to 3D? ... View more

Thanks a lot for the steps you provided. First of all, your advice makes sense to me. In fact, I got a little more understanding on what CE â??procedural modelingâ?? does mean ... Secondly, the snapshot looks better than â??non-textured' 3D, at least, as initial result. I will follow steps carefully and see if I can reproduce your results. By the way, can you attach the â??remodeledâ?? SHP/KML file that you have done for a comparison? Or directly send the zip file to larry.zhang@ymail.com hi Larry.  sadly, I'm not yet very familiar with ArcGIS products .. where do I find those 'referencedâ?? images im ArcGlobe ?  * * *  [ATTACH=CONFIG]12114[/ATTACH]  * * *  Okay, let me explain how this workflow would work in the CityEngine, what works and what does not, and what the role of metadata would play.  ... View more

Yes, with this try, no metadata provided. So, it is good idea to add any attributes, when needed during re-modeling. In other word, it may be a step in your recommended workflow. (Please refer to the �??referenced�?? images at ArcGlobe (or ArcGIS Explorer) for some info on your needs.) ... View more

Thanks, Matthias It sounds great to me. Certainly, CE will add good values to our current 3D workflow, if it works for this circumstance. Anyhow, considering few of 3D features not enough to present an operational & reliable workflow, I attach tens of 3D buildings for you to explore. So, as first step, please help try the easiest steps with CE for any 'textured' 3D. Secondly, it would be nice to use the textures from 'referenced' images. The enhanced workflow should include that, if possible. +++++++++++ Note, It is better to open it in ArcGlobe for 'referenced' images. Also, available in ArcGIS Explorer. However, ArcGIS Explorer still does not support 3D display, even though the documentation says so. Besides, either SHP or GDB is OK, as long as it works, even in 2011.2 or any latest releases. ... View more

Just put personal thoughts here for better communication: On hands-on experience with LPS/Erdas Imagine plus our limited testing on ArcGIS 10.1 (Beta 2), it is too difficult for current MD data model & infrastructure to handle the traditional up-to-10-cm airphotos 'properly and efficiently' for ortho-rectification, in particular, using classic photogrammetry theory such as bundle adjustment. However, very optimistic on the future releases to bring us somewhere in that direction with modern airborne camera devices and spaceborne sensors (saying, a mimic or copycat of the traditional bundle adjustment workflow). Of course, as an alternative option for photogrammetry, it may be also good idea easily for camera vendors to customize MD model to support any camera devices, if the objects are open. As heard, in fact, Lidar processing and data analysis may be already supported within the pre-release of ArcGIS 10.1. Hopefully, airborne Lidar inclusive and processing /analysis good enough, when used in operation. +++++++++++ Personally, on new MD infrastructure, it should be an IT-enhanced MD. The new MD model should be manageable in operation, saying, only remotely access the raw data folders with 'READ' permission during creation of MD, that is, no any direct 'write' onto the raw data folders. So, it will be different from current MD model (mixed) and also different than LPS (pure 'local'). On more efficient computations, besides, new algorithms with lower computation complexity should be applied somehow, like spline-like least square. ... View more