Changes between Initial Version and Version 1 of Procedures/RCDPhotoProcessing


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Timestamp:
Nov 5, 2009 12:48:08 PM (11 years ago)
Author:
mggr
Comment:

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  • Procedures/RCDPhotoProcessing

    v1 v1  
     1= Leica digital camera processing =
     2
     3The 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
     22A typical processing setup looks like:
     23[Image(photo_processing_screenie.png)]
     24   
     25== Tagging the TIFFs ==
     26
     27== Subsequent processing ==
     28
     29There 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