Nemo Mai's Activities

How to use the SDK to create an orthophoto

JinYu Xu — Tue, 10 Dec 2019 17:24:05 GMT

In the SDK sample, only creating a 3D mesh, how to generate an orthophoto

I used the following code, but it was not successful

# --------------------------------------------------------------------
    # Production
    # --------------------------------------------------------------------
    production = ccmasterkernel.Production(reconstruction)
    
    production.addProductionJob( ccmasterkernel.TileProductionJob(production, reconstruction.getInternalTile(0)) )
    reconstruction.addProduction(production)

    production.setDriverName('Orthophoto/DSM')
    production.setDestination( os.path.join(project.getProductionsDirPath(), production.getName()) )

    driverOptions = production.getDriverOptions()
    driverOptions.writeXML( os.path.join(project.getProductionsDirPath(), "options.xml") )

    production.setDriverOptions(driverOptions)

    print('Production item created.')

    productionSubmitError = production.submitProcessing()

Switch ContextCapture Engine to a different queue in batch mode

Nemo Mai — Fri, 31 Jan 2020 23:12:49 GMT

Normally, to switch the Engine to a new distributed queue, we run the ContextCapture Center Settings, Configuration Tab, and select the new shared folder.

Is there a way to do this programmatically (batch) mode?

For example, we have a configuration as follow:

Computer A, Computer B, Computer C running on share \\myserver\shareLetters

Computer 1, Computer 2, Computer 3 running on share \\myserver\shareNumbers

But due to some jobs with high priority, we want to change the configuration to:

Computer A, Computer B, Computer C, Computer 2, Computer 3 running on share \\myserver\shareLetters

Computer 1 running on share \\myserver\shareNumbers

We can write scripts to stop and restart the engines, but do not know how to instruct the engines to pick up a new job queue. There are a large number of machines, and due to the randomness of priorities, having to manually run CC Center Settings on each computer every time will not be very convenient

Exif tags read by ContextCapture

Nemo Mai — Thu, 23 Aug 2018 21:48:45 GMT

Is there a list of Exif/XMP tags and data format that will be read by ContextCapture? Our images were prepared for another AT package which have the following tags:

---- XMP ----
Yaw                             : -138.939148
Pitch                           : 28.712879
Roll                            : 114.609886
Principal Point                 : 7.187369, 5.258276
Perspective Focal Length        : 16.252817
Perspective Distortion          : -0.057392, 0.258084, -0.071290, 0.000000, 0.000000
Model Type                      : perspective
---- Composite ----
GPS Altitude                    : 13.6 m Above Sea Level
GPS Latitude                    : 28 deg 47' 36.17" N
GPS Longitude                   : 96 deg 3' 4.94" W
GPS Position                    : 28 deg 47' 36.17" N, 96 deg 3' 4.94" W
Image Size                      : 4104x3000
Scale Factor To 35 mm Equivalent: 2.5
Focal Length                    : 16.3 mm (35 mm equivalent: 40.1 mm)

...

Following is the Exif Section in the block export:

-<ExifData>
-<ImageDimensions>
<Width>4104</Width>
<Height>3000</Height>
</ImageDimensions>
-<GPS>
<Latitude>28.7933813096719</Latitude>
<Longitude>-96.0513716180625</Longitude>
<Altitude>13.6049994848116</Altitude>
</GPS>
<FocalLength>16.2528168257041</FocalLength>
<YawPitchRoll>-138.939 28.7129 114.61 </YawPitchRoll>
</ExifData>

So apparently, CC reads some of the tags but not all. Just wonder what should be the name and data format for "Principal Point", "Perspective Distortion" (K1, K2, K3), ...

Ask A Question I

Thu, 23 Aug 2018 10:54:04 GMT

Ask a question in a forum.

Where can I find a list of string constants for SRS?

Nemo Mai — Thu, 23 Aug 2018 21:00:35 GMT

We process our data using the SDK and need to export the block result in different format.

outSrs = ccmasterkernel.SRS(outputSRS)

Where can we find a list of supported formats such as 'WGS84', 'EPSG:4978', …

Thanks.