3.02.01 – Case Study 01 – Aircraft interior scan : NCTech iSTAR : Post Processing images

NCTech iSTAR Post Processing images

iSTAR images need to be transferred from the cameras SD card to a computer for further post-processing. This requires the NCTech Immersive Studio software to be installed.

NCTech Immersive Studio interface

How you post process the raw data files effects the resultant ‘output’ location:

  • Single Image Processing – An ‘Output’ folder is created inside the respective capture folder. Each image taken generates a single ‘capture’ folder (as discussed in image management section.)
  • Batch process – A collective ‘Output’ folder is created outside of the image capture folder. This I find both convenient and prone to confusion i.e. one could mistakenly think you have copied all processed data by copying each ‘capture folder’, but you could easily forget to copy the collective ‘output’ folder (that houses all post-processed data)
  • Screenshot of source and output file in next image.

Post Processing operation

  • To process a High resolution (50MP with 9 exposures) image takes approximately 1 minute 30 seconds on an i7 2.8GHz computer. Processed file and the original .NCTRI shown below.
  • The creates an 8-bit JPEG file format for direct viewing within the NCTech Immersive Studio Viewer
  • Note we started off with 353Mb of data, yet get a resultant (default) file return of only 3.4Mb – presumably due to the fact that:
    • we are balancing all our exposure data (and essentially locking it) using a process called Exposure Fusion. Which is similar, but not quite the same as a tone-mapping process.
    • we are only getting an 8-bit JPEG image by return

NCTech_iSTAR_Process_FolderAbove NCTech Immersive Studio Output

Above : Captured images as ‘post-processed’ using NCTech’s Immersive Studio software. (Original 10,000 x 5,000 pixels, resized to 1000 pixels wide)

Next Page : Processed Image Analysis

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