Topics

1

Python and Java API / Build and export orthophotos with different resolutions using script

« on: October 18, 2023, 07:32:34 AM »

Hi,guys
I want to build and export orthophotos with different resolutions using script.
And the main flow is as follows:
for photo in chunk
   read the the [X Y Z] values (after aligning) of  the current photo
   calculate the spatial resolution of current photo with Z value and pixle size and focal length of the camera
   disable all photos and enable current photo
   specify a coordinate system according to the X (latitude) value, for example North Pole Stereographic for photos with latitude >60N, and Equidistant Cylindrical for 60S<latitude<60N
   build orthomosaic with the calculated resolution and specified coordinate system, and the surface is mesh
   export orthophoto
Thanks.

2

General / Orthoimages are only part of the corresponding source images

« on: April 18, 2023, 04:59:46 AM »

Hi guys,

The size of source images is 4096*3072, and resolution is A, I build a  orthomosaic with a resolution of B, B<A, then I export the orthoimages.
I found that, the max size of orthoimages is 8193*8193, and some of the orthoimages are only part of  the corresponding source images.

What should I do to generate orthoimages the same as corresponding source images?

3

General / About the dense cloud confidence value

« on: April 13, 2023, 05:35:05 AM »

Hi,

I want to know how to calculate the confidence value of dense cloud in metashape, and is it normalized to 0-255 finally?
Generally speaking,  what's the range of confidence value of dense cloud can be filtered as noise?

4

General / Can PhotoScan be used for image mosaic?

« on: April 25, 2017, 05:04:54 AM »

Hi

Can PhotoScan be used for image mosaic, just mosaic (not orthomosaic)?

5

Bug Reports / Problems of activation of 1.3

« on: March 31, 2017, 01:31:45 PM »

I try to activate PhotoScan 1.3 with the serial number which is used for old versions (my PC is off-line), and it is notice that "can't connect to activation server". I activated the old version off-line successfully.

6

General / How to export orthoimage of a single input image?

« on: March 21, 2017, 11:11:17 AM »

Hi,

After "building DEM" and "building orthomosaic", how to export orthoimage of a single input image?

7

General / problems of orthomosasic (version 1.2.6)

« on: January 24, 2017, 10:36:17 AM »

why the exported orthomosaic image  is only a small part of texture image in the project as I marked by red circle in 'full_texture_image', and has a stair-step shape? I did not encounter this problem with older versions.

And how to close the holes in the texture and orthomosaic image, although it is  definitely occluded regions.

8

General / Is initial camera position and orientation information significant?

« on: January 23, 2017, 08:58:01 AM »

Is there any evidence that a better alignment result can be generated with initial camera position and orientation information than that without initial values?

9

Python and Java API / Group photos from script

« on: January 17, 2017, 02:12:40 PM »

Hi
I have a group of stereo images. After adding all images to the project, I want to group them into two groups (Left and Right) and import the corresponding camera calibration files with format of Australis. Is this achievable using Python script?