CAM’s Beech SNB-5 is a fabulous aircraft, with plenty to look at inside and out.
Typically, this aircraft is kept locked, so visitors can only appreciate an exterior tour. This made it an ideal subject for an interior and exterior scan.
I undertook 8 scans overall; 6 external and 2 internal.
I used the SpheronVR SceneCam plus ScanLight attachment for all the scans, the ScanLight ensuring a consistency of illumination for all the scans. This was useful, as the 604 hangar has inconsistent lighting coverage, plus the interior would be dark (as there is no lighting inside the Beech).
As with any cramped interior, camera placement was considered to avoid significant blurring due to minimal focus distance of lens and aperture choices. Smaller apertures would improve depth of field, but increase image noise.
All scans were shot at maximum resolution which would generate a usable image of in excess of 50 mega pixels
Scanning time is consistent with the ScanLight attachment; typically about 6 minutes per scan. This is slower than the iSTAR Fusion I tried, but the iSTAR usually generated inferior images, compounded by stitching errors across some elements of the shots. The Spheron just gets it right – time after time.
Image Processing – HDR
The initial conversion of the raw image being handled by Spheron’s native Image Processor. This converted the native .SPH file format into a cropped, bi-linear radiance file format, saved as a 32-bit HDR file.
The resultant HDR image was then tone-mapped to allow a single image with fixed (and balanced) exposure to be produced. I used PhotoMatix Pro 5.1.3 for this purpose, which provides a healthy range of processing options. I tended to find the Default tone-mapping option worked best, as I found the Photographic option yielded images with too great a contrast range (my preference was for less contrast).
To experience the full tour for the Beech, please visit the Combat Air Museum website, or click the link below
Beech SNB-5 Twin Beech Model 18 virtual tour produced using the Spheron SceneCam