Messages

1

General / Re: Automatic GCP identification

« on: November 26, 2012, 03:33:41 AM »

I tried to use small automated markers in a laboratory experiment (resolution about 1mm), but it failed as the number printed next to marker was identified as the center of the marker rather than the actual marker center. I tested it now in a large experimental setup (larger targets and the resolution is about 5 mm), and these were correctly identified.

Please make the size of the number proportional with the marker size or at least variable.

2

Python and Java API / Re: [pro] timeline through api

« on: August 20, 2012, 05:47:44 PM »

Hi Nico,

Is this a suggestion or a question? You are not really clear on that. Nevertheless, it is already part of the api. I use the following code (based on the documentation), I hope it is usefull for others.

# first load a document, 'photoScanFile' is set to a .psz file in my case
document = PhotoScan.Document()
document.open(photoScanFile)

# set frame for the first (0) chunk, i is desired frame (in my case this is part of a loop):
i = 2
document.chunks[0].frame = i

# The first frame is always frame 0
first_frame = 0
# the last name is the number of frames
last_frame = document.chunks[0].frame_count

The loop I use if for exporting all frames, it looks like this:

    for i in range(0,document.chunks[0].frame_count):
        # export file names
        outputDEM = '%s/DEM_%04i.tif' % (outputDir, i+1)
        outputOrtho = '%s/Ortho_%04i.tif' % (outputDir, i+1)
       
        # set current frame
        document.chunks[0].frame = i   
       
        # export dem and orthophoto
        document.chunks[0].exportDem(outputDEM, format='tif', region=exportRegion, dx=gridSize, dy=gridSize)
        document.chunks[0].exportOrthophoto(outputOrtho, format='tif', region=exportRegion, dx=gridSize, dy=gridSize)