Latest Contributions by RobertBerger

Greetings. Do you know what kind of camera was used on the airplane? If you do, I would suggest looking into loading the 1200 raw scenes into the mosaic dataset using the appropriate raster type if available (e.g. Applanix , ISAT , or MatchAT ). This will automatically pull your camera metadata and you can provide an elevation model for automatic orthorectification. Also look for some notes at the bottom of the supported raster types list. If none of these work, then there is another way to load your ultracam data which might help you. The problem with merging all your scenes first is that it is very hard after the merge to create an accurate camera model for the single dataset for orthorectification etc. Usually people orthorectify each scene first, and then in the last step merge their data together into a single dataset. I hope this helps. Robert ... View more

Greetings, The IRasterBandCollections interface uses a long to get the item which is a really big number . I've seen data with some 600 bands work without issues. Do you have data with that many bands or are you just trying to see limitations? Robert ... View more

Greetings, So the first question is: do the air photos already have a spatial reference or are they raw? If your photos are raw then the next question is what kind of camera was used and what kind of metadata is available. If you have a professional air photo camera then you can look into using the camera frame raster types as part of mosaic dataset loading. If all you have are some pictures someone took with their camera out of a plane, then you'd have to georeference each image manually first. Once you have the imagery in the right space, then you should look into orthorectifying them - mosaicking comes later. In order to be able to orthorectify you will need to have specific camera model information (usually in the form of RPC or other camera model). You can do orthorectification as part of the mosaic dataset loading. Lastly the single seamless image (mosaicking): If you chose to go with the mosaic dataset (need ArcGIS 10.0) then you can export the single image out of the mosaic dataset. If you don't have 10.0 or are not using the mosaic dataset, then you'll have to output each image for each processing step (georeferencing, orthorectification, ...) and then in the end use one of the mosaic geoprocessing tools to get your final output. Finally a note: the jpg format has a 4GB limitation (size cannot exceed 65k x 65k), so if your final mosaic will be larger than that, you should consider a different format (such as tiff or img). I hope this will get you started in the right direction. Robert ... View more

Greetings, The mosaic dataset by default only draws up to 20 items. This is a setting you can change on the mosaic dataset defaults page > maximum number of requests. As far as performance: if you rebuild the raster catalog as a mosaic dataset (instead of a reference) then you can build overviews which will give you better display performance. Especially in your case where you have tiled data without overlap, you won't lose anything. Hope this helps. Robert ... View more

Greetings, I think what you're looking for is called "mosaicking". There are a few tools you can try to use. Play with the mosaic operator to see if you can get what you want. There is some help documentation online. Hope this helps. Robert ... View more

Greetings, To exclude duplicates on load you need to set the property in IAddRasterParameters: IAddRastersParameters AddRastersArgs = new AddRastersParametersClass(); ... setup crawler etc... // Exclude duplicates AddRastersArgs.DuplicateItemsAction = esriDuplicateItemsAction.esriDuplicateItemsExclude; Hope this helps. Robert ... View more

Greetings, When you say you want the pixel values, what exactly do you mean? You can use the identify tool to see the pixel value at a given location. If you need points then you can use the raster to point geoprocessing tool. Robert ... View more

Greetings, If you did an "update georeferencing" then the spatial reference should be retained in the image. The copy raster tool also has the nodata parameter that you can set to 0 to avoid black borders. Generally that should work if your input already has the spatial reference. Robert ... View more

Hi Sam, Have you tried using the raster catalog in ArcScene? I would also suggest building an unmanaged raster catalog . You can additionally play with the display properties if you do not want to see the wireframe. If you have 10.0 I would suggest using the mosaic dataset as it has many more options for you to manage your data. Robert ... View more

Greetings, In order to rectify your images as a new output you should be able to do a simple copy raster (SaveAs) to a new dataset. That should write a new dataset with the georeferencing information. Orthorectification is the process to remove elevation displacement from the image by using an elevation dataset with your imagery. It doesn't seem that this is what you're looking for. Hope this helps. Robert ... View more