| | 1 | = Leica digital camera processing = |
| | 2 | |
| | 3 | The RCD produces raw files that need to be processed in order to create TIFF files. The processing basically uses a gain and offset scaling and (probably) corrects for lens distortion. See the [wiki:Sensors/RCD_CH39 RCD page] for more details, including filename convention. |
| | 4 | |
| | 5 | == Processing the raws == |
| | 6 | |
| | 7 | 1. Load the Leica photo processing software |
| | 8 | * Under Windows, select start->programs->leica->calibration->Calibration Post Processing |
| | 9 | * If using wine, run "leica_photo_processing" |
| | 10 | 1. Select the appropriate camera config (Parameters) |
| | 11 | * As of late 2009, this is CH39_021_060 |
| | 12 | * There may be updates to this as the camera is recalibrated |
| | 13 | 1. Select the input files |
| | 14 | * Typically this will be something like ~airborne/workspace/IPY09_11-2009_219_Helheim/leica/RCD/images |
| | 15 | * You can click and shift-click to select a list from the open file dialog, but be aware that it appears to take about 5 seconds per file under wine, so expect a long wait while it's thinking (it hasn't crashed!) |
| | 16 | 1. Unset all the processing options (Auto Contrast, Adaptive left-right balance) |
| | 17 | 1. Select the output directory |
| | 18 | * Typically this will be something like ~airborne/workspace/IPY09_11-2009_219_Helheim/leica/RCD/images-processed |
| | 19 | 1. Select 16 bit TIFF output ('''this is important!''') |
| | 20 | 1. Hit the start button and go for coffee (allow about 20-30secs per file) |
| | 21 | |
| | 22 | A typical processing setup looks like: |
| | 23 | [Image(photo_processing_screenie.png)] |
| | 24 | |
| | 25 | == Tagging the TIFFs == |
| | 26 | |
| | 27 | == Subsequent processing == |
| | 28 | |
| | 29 | There are several other steps that could be undertaken: |
| | 30 | * orthorectification (map the photos with respect to the ground/aircraft position) |
| | 31 | * ? geocorrection (map the photos with respect to the ground + a DEM) - possibly only Bill's azgcorr mods could do this |
| | 32 | * compositing orthorectified photos and seam-line adjustment |
| | 33 | * compositing is easy, but will have ugly problems when you get different views on an object with vertical structure |
| | 34 | * to improve the look of this, you have to manually edit the positioning of the joins - this is currently a very manual process and we do not currently have software for it |