Topics

1

General / Bad stitching with good Sequoia dataset

« on: August 15, 2017, 12:01:07 AM »

Hi!

I have the dataset of 1576 RGB images of field by Sequoia camera. It has a very good overlap - more 9 images for most points. And I use CameraAlignment with  RollingShutter options.
But result is bad. What is the problem? 

Please see Agisoft Photoscan report for details
https://share.skyglyph.com/index.php/s/vBPCTQxP0eU8BxA

2

General / Bad bands interpretation in Multispectral Sequoia orthomosaic map

« on: July 05, 2017, 02:16:57 AM »

Hello,


I use this manual https://training.fws.gov/courses/references/tutorials/geospatial/CSP7304/2016documents/HandsOn_Afternoon/UAS/UAS%20II%20Post%20Processing/PhotoScan%20Processing%20Procedures%20MicaSense%20Feb%202016.pdf
 to stitch Multispectral Sequoia images into a map. The result looks without proper color information.

The resulting map has the problem with bands interpretation: the first band is Gray, 2-4 are Undefined, 5-th is Alfa.


As input, I have set of one channel images for like
IMG_xxx_GRE.TIF, 
IMG_xxx_REG.TIF
IMG_xxx_RED.TIF,
IMG_xxx_NIR.TIF.

3

Python and Java API / Howto set Mapir camera calibration setting by Python?

« on: June 14, 2017, 01:16:56 AM »

Hello

The Mapir camera needs manual setting for custom pixel size and focal length.
(There is link to instruction
https://www.mapir.camera/blogs/guide/processing-survey2-camera-images-in-agisoft-photoscan)

How can I set it by Python script?
Can I just use this code

Code: [Select]

...
chunk = PhotoScan.app.document.addChunk()
camera = chunk.addCamera();
camera.sensor = chunk.addSensor();
camera.sensor.label  = 'Mapir Survey2'
camera.sensor.type = PhotoScan.Sensor.Type.Frame
camera.sensor.width = int("0.00134")
camera.sensor.height = int("0.00134")
camera.sensor.focal_length = int("3.97")
camera.sensor.fixed = True
... ?

4

Python and Java API / exportReport error

« on: March 07, 2017, 01:02:30 AM »

Hello,

I have the problem with report exporting:

Code: [Select]

chunk.exportReport("report.pdf") It works well before. And it works well in a GUI mode now.

Current ver. 1.3 build 3772 linux 64bit
Error:

ExportReport
Segmentation fault (core dumped)

Thanks

5

Python and Java API / Bed result after changing Coordinate System for export

« on: March 03, 2017, 05:39:28 AM »

Hello,

Could you help me to understand how I have to set Coordinate System?
I have csv with image coordinates file with in EPSG::4326.
I need export map in  EPSG::3857
A did it but stitching quality was terrible.
I use this code to load images and reference (csv) file

Link th the report https://drive.google.com/open?id=0B5NgaXpGOtOUNzhBempTd2lMUXVUaUhLZEpxZElSZ096dkhJ
The csv file in attachment

My code:

Code: [Select]

chunk.addPhotos(images_list)
camera = chunk.cameras[0]
chunk.loadReference(out_csv, format=PhotoScan.ReferenceFormatCSV, columns="nxyzabc", delimiter=",", group_delimiters=False, skip_rows=1)
chunk.crs = PhotoScan.CoordinateSystem("EPSG::4326")....
And before export orthomap I change CoordinateSystem to EPSG::3857

Code: [Select]

crs = PhotoScan.CoordinateSystem("EPSG::3857")
doc = PhotoScan.app.document

doc.open(project_path)
chunk = doc.chunk
chunk.crs = crs

chunk.buildOrthomosaic(surface=PhotoScan.ModelData, blending=PhotoScan.MosaicBlending, color_correction=False)
chunk.exportOrthomosaic(args.ortho_path, image_format=PhotoScan.ImageFormatTIFF, raster_transform=PhotoScan.RasterTransformNone, write_kml=False, write_world=False, write_alpha=True, tiff_compression=PhotoScan.TiffCompressionDeflate)


6

Python and Java API / Is it posible use APM data flash log with loadReference()

« on: December 13, 2016, 04:10:12 AM »

Hi,

Is it posible use APM data flash log with loadReference()?

Code: [Select]

chunk.loadReference(APM_flight_log_file, format=PhotoScan.ReferenceFormatCSV, delimiter=",")
As I see it not work.


Thanks.

Andrew