Seeing partial panos in Stitch where you know that you did not shoot them as partials intentionally, is a sign that the USB flash drive is malfunctioning. You should replace it ASAP. We have been getting user reports that metal Kingston DTSE9 G2 USB flash drives are especially prone to this, so if you are using one, it is probably a good idea to replace it just in case. We currently use Sandisk Ultra Flair 16GB USB 3.0 flash drives. Another possible cause would be if the USB flash drive was pulled out of the powered on camera without safely ejecting it in Survey first.
For partial panos image data, inspect h.jpg images found in the corresponding pano folder on disk - at least one of them most likely will be corrupt or missing. Corrupt images will have corrupt JPEG encoding and missing or corrupt image data.
In case it is h3.jpg file that is missing and s3.jpg and pts3.dat files are also missing, then most likely you simply forgot to shoot the last fisheye position. In such a case, laser data will appear complete, as the laser scanner has 270 degree field of view and already the first two fisheye positions will provide complete room coverage with laser point cloud. In all cases of corrupt panos/USB drives we have seen, pts.dat and s.jpg were present and only h.jpg was corrupt or missing.
Here are few tips for dealing with corrupt panos.
- Inspect the corresponding pano folder on the USB flash drive, in case not all h.jpg files were copied successfully to your computer hard drive or if they became corrupt during copying and try copying them to your hard drive again.
- Corrupt JPEG encoding may be fixed by simply opening the h.jpg image in Photoshop and re-saving it.
- For missing data, you can try using a corresponding s.jpg image which is a downsampled copy of h.jpg. You will need to scale it up in Photoshop to be the same size as h.jpg in pixels and then copy over the missing parts. Those parts will be softer and will lack sharpness compared to the rest of the original h.jpg, so you may want to disable that pano in the iGUIDE.
- Sometimes h.jpg will have nearly complete image data, but parts of the image will be shifted around. You can re-arrange them into the correct order in Photoshop and re-save the file.
- After fixing h.jpg files, right-click on the pano in the tree-view in Stitch (left side of Stitch window) and choose Re-lmport.
- Partial panos may still be used by the drafting team for drafting walls, as they will have laser data, but they may not have enough information for drafting doors and windows.
- Please remember that processing projects in Stitch directly from a USB flash drive is not supported by Planitar and may lead to early failure of the USB flash drive.