Topics

1

Feature Requests / Laser scan + pictures integration

« on: May 27, 2024, 06:16:59 PM »

Hello,

i find the integration of Laser Scans into MS a very nice step head, but actually it misses a couple of very important features in our opinion.
- Now Laser scans can be registered with nearly millimetric accuracy in 3rd party software if using Leica RTC360 or FARO or RIEGL devices, and it is also possible to export an orthomosaic from Laser Scan processing software, but it will always result "dotted"

 -Now MS allows to import pictures and spread these onto laser scans, to obtain a nice FULL orthomosaics, especially if working on facades or vertical surfaces.

1) The big problem is that importing already registered scans into MS now results in loosing registration, so GCPs are required to georeference the cloud again: this is just a waste of time and decrease the overall accuracy of the project, since laser scans were already registered to millimeter accuracy. We would greatly appreciate a workflow that allow us to import laser scan by preserving their registration.

2) Once suggestion at point 1 will be implemented, we would like to implement also a second features: now to setup the projection plane for facade orthomosaic is everything but intuitive (it is required to tick 3 points on the surface and define the plane like this): it would be much better to import the projection plan from SHP or DXF, allowing the user to exact define the projection plane and angle.

We hope these features (primarily at point 1) will be implemented as soon as possible.

Kind regards

2

General / Satellite Image WV3 - Working with PS?

« on: April 17, 2015, 01:29:36 PM »

Hello,

anyone knows if PS Pro is able to process the new 30 cm resolution
DigitalGlobe WorldView-3 Stereo Satellite Photos? We have a 240 sqKm area to investigate and get a DTM.

There are some articles showing very good results in DTM generation with those photos.

Placing GCPs is not a problem, but if PS pro does not align the images, then our University will waste a lot of money!

Is there anyone that already worked in such a scenario, please let me know or PM me.

Thanks and kind regards,

MC

3

General / Custom datum and Projection file

« on: April 08, 2015, 10:09:20 AM »

Hello,

I want to import a local datum transformation base on Molodenskii 7 parameters as follows.
Then i want to use standard Transverse Mercator as projection.

Is there any quick tool to create a PRJ file that is fully compatible with PS Pro format? Is there any template that i can use for this scope?

Thanks and regards

4

Feature Requests / Orthomosaics and Export perimeters

« on: March 31, 2015, 12:07:18 PM »

Hello,

while we love the countless export options in PS Pro, the import side could be improved, in our opinion.

1) Import a working perimeter in SHP/DXF format. As University, we use PS mainly for aerial mapping, so cartography is available mainly in DXF/SHP format. It would be so much appreciated to have chance to import some DXF/SHP layers in PS Pro.

2) As mentioned above, we would greatly appreciate also to setup working perimeter in DXF/SHP format, instead of actual rectangular bounding box

3) Finally we would greatly appreciate also to have DEM/Orthmosaics Export Perimeter perimeter in DXF/SHP format. This would greatly improve our work, save a lot of time in trimming/cutting images border in post-processing.

Thanks and kind regards

5

Feature Requests / Edit Circle

« on: March 31, 2015, 11:56:50 AM »

Hello,

similarly to many other users, we think to have quite good hardware and GPU, but resources are never enough when managing dense point clouds or classes in aerial mapping.

From other software, we find extremely useful to implement an "Edit Circle" (with radius user selected), that can be moved by double clicking on the cloud. For moving, i would suggest to use Arrows or WASD, like suggested by another user previously.

When "Edit Circle funtion" is ENABLED, only points inside the circle are shown and can be edited, that makes editing fast, easy, reliable and, what is more important, quick even with a laptop.

I am sure this implementation would be extremely appreciated, because sometimes (even with our Dual Xeon and Dual ATI GPU configuration), the dense point clould cannot be managed because computer hangs and even deleting a few points becomes a 15 minutes operation.

Regards

I

6

General / Workflow question: 2 cameras

« on: October 25, 2014, 01:07:32 PM »

hello,

- I have an aerial project where i used 2 different UAVs with 2 different cameras. So i have dataset of pcitures for camera1 and dataset for camera2. since cameras are different, also calibration file are to be applied separately.

- I also have collected a good number of precise GCPs well-spread inside the survey area.

Question is: what is best workflow to use to process these dataset and obtain 1 complete dense-cloud + orthomosaics?

I notice the following problems:

1) For each chunk of pictures, i can only apply 1 calibration file, so i need to create 1 chunk for each camera. In my case, i need to create 2 chunks and apply calibration.

2) If i align the 2 chunks separately, how do i merge chunks? It looks like merge-chunk command is available only after dense-cloud has been created. This means that GCPs are to be applied for each chunk, that is bad because GCPs distribution has been studied to be well-spread for the entire area, and not for 2 single chunks.In the outer areas of each chunk, this would cause BIG errors because GCPs are not as dense as required to have good accuracy

Does anyone know a good workflow to obtain a good result?

Kind regards,

moh

7

General / export Point classes

« on: July 12, 2014, 09:33:47 AM »

Hello,

is it possible to export an image with point classes (after Dense Cloud Classification has been executed) as a GeoTIFF?

It would be extremely useful to use as overlay layer in a GIS to check if classification was ok, compare with other orthomosaics etc.

Regards,

Moh

8

General / Problem with Dense Cloud Classification

« on: June 23, 2014, 10:14:58 AM »

Hello,

i would like to receive some feedback by expert users about a dense cloud classification tool on crop fields (as far as i know the worst possible scenario to apply the algorythm).

The crop field area i want to classify is 250m by 150m. The crop is 1.5m tall from ground level since it is june and it is almost ready to be cut! See "Crop field.jpg"

 I used standard parameters like 8.5°, cell=100m and height = 1m in the classify ground point.

As you can see, there also some "trenches" which are supposed to help the algorythm.

After using the algorythm, i find a very strange result: trenches are classified as "vegetation", while crop is classified as ground, as you can see in the other jpg.

Question 1:How can this happen? Since ground is the lowest level, shouldnt this problem never happen?

Question 2: I have manually classified the crop field as "Low vegetation" and i have re-run the Dense Clould Classify tool. I was very careful not to select the trenches.
I thought that this "boost" would have helped the algorythm in refining the classication and maybe sort the problem. I have reapplied the classification tool and i got same results: looks like that manual intervention is ignored by algorythm. Is this confirmed? Can it be changed by any chance? It would improve a lot the results.

Thanks

9

Feature Requests / Mandatory modification

« on: October 09, 2013, 04:44:39 PM »

Question: i am opening a PSZ containing a model with 200M vertex. PS PRO always get stuck for 5-10 minutes when opening because it is in the shaded or wireframe window, instead of point cloud as example.


Can we make as default value that every PSZ always open with Point Cloud as default??

It would save everybody lot of time i guess!

regards!

10

General / Performance question

« on: October 08, 2013, 12:13:30 PM »

Hello,

i have this funny.

I am using 2 computers to align the same chunk (590 photos at 16MP).

Computer 1: Intel Core I7 3.0Ghz, 16Gb RAM and Geforce GT550TI.
- Matching Time 5009s
- Alignment time 1553s

Computer 2: 2 x Xeon E2620 2.0Ghz, 64Gb RAM, 2 x ATI 7970 3Gb
- Matching Time 6518s
- Alignment time 1240s


Question is: how come this lack of performance with expensive computer? =)

11

General / Thermal camera

« on: March 09, 2013, 12:55:23 PM »

Hello,

i have to purchase a thermal camera to install on UAV for mapping. I am thinking to purchase a FLIR A35 camera ( see link http://www.imc-store.com.au/FLIR_A35_p/63209-0101.htm ), which is said to work quite ok on UAV.

2 Questions:

1) Does anyone have some feedback or reccomendations with this camera?

2) Is it possible to process these cameras pictures with photoscan PRO? Was this processing tested by any user in the forum and what is the feedback? I am concerned because automatic point matching in PS Pro could be really difficutl with thermal pictures, so any idea is welcome.

Regards,

- M -

12

Feature Requests / Export orthomosaic background color

« on: March 09, 2013, 12:41:47 PM »

Hello,

when exporting orthomosaic, the not-mapped areas or masked areas are BLACK color. Would it be possible to change that color to User-selected color or trasparent?

When printing maps, that black is weird, crap and ink-consuming also!

Regards.

13

General / Modeling a bomb/mines field

« on: November 22, 2012, 02:24:32 PM »

Hello,

we are working in Vietnam and we need to survey a beach that is unaccesible becuase there is risk of bombs/mines from the 70's war.
Before of deciding a UXO clearance, a topografic survey / mapping is to be done.

The beach is as wide as 1 km and long 2 km and there is a road that is parallel to the beach.

In few words, i can place GCP on the road, on the safe side of the road, but i canno place any marker on the beach.

I have been noticing, using PS Pro, that if you have GCPs well spread, modeling is accurated and Z accuracy is good (5-10 cm or better), but only in the area inscribed INSIDE the GCPs polygon, said GCPs polygon = polygon obtained by connecting all GCPs vertexes.

The model outside the GCPs polygon quickly becomes unreliable and at 100m or less, Z error is already 3-4 m if not more.

Now question is: is there any chance i can obtain a decent DEM in the beach area by placing GCPs outside that beach and only on 1 side? My target is to obtain Z accuracy = 20cm more or less.

Check attachment please ancd see my workaround:
1) i could place many GCPs in the safe area (left of the road) for about 1 km wide area
2) i can perform an acquisition with UAV for the entire area with overlap 90% between photos
3) I can accurately survey many GCPs, but only in the safe area
4) If i use PS Pro, at what distance from the road in the "Bomb area" i could obtain a decent Z accuracy = 10-20 cm?

Following my experience, it looks like that just at 100m on the right of the road there is big error.

Is it possible to improve somehow and have a decent mode upto the shoreline?

Thanks and regards.

14

Feature Requests / vegetation / Tree Removal from DEM

« on: November 22, 2012, 01:44:19 PM »

As i posted in another topic in GENERAL section, i would like to put this subject also in this section.

With my university we both work with LIDAR datas and Photogrammetric methodologies for MAPPING.

LIDAR is expensive, but it can easily remove vegetation/grass/trees as it uses an emitting source and interferometry criterias to find the "last echo return" that is assumed as the ground, even in very dense scenarios (forests, corn fields, ecc).

As it is said in this topic, the Build Geometry with Height field in PS PRO only gives the top of the envelope, so to manually remove trees / vegation from point cloud or DEM really takes lot of time.
This job is really hard and sometimes it is better to spend more money in LIDAR to save time in processing.

If there were a tool / procedure to find the ("BASE HEIGHT FIELD") = (ground cleaned by trees/vegetation) , we would save lot of money by using photogrammetric UAV instead of LIDAR aircraft.


This is an implementation that could really improved PS Pro market and i am sure many users would pay extra money for having it, my university department included!

Kind regards.

15

Feature Requests / Extremely large projects 1000+ photos

« on: October 23, 2012, 05:58:59 PM »

Hello,

it has come to my attention that processing of 1000 Photos at 16Mpix and ULTRA resolution is actually impossible on any commercial hardware.

Agisoft support center suggests that reducing the BOUNDING BOX to a portion of the entire area is an effective work-around.

As it is always difficult for users to determine if Bounding Box redution is enugh or not, i suggest the following implementation:

1) a new tool that, once chunk is aligned, automatically creates a number of Bounding Boxes dependant on the desired resolution (MEDIUM, HIGH, ULTRA) and on the hardware which is running PS PRO.
2) Then Bulding Geometry tool can be executed separately on each bounding box at the desired resolution and being sure that hardware resources are enough to complete the processing, no matter how long it takes.
3) Repeat the point 2 for each of the bounding boxes created at point1 and you have fantastic mosaic of meshes at the desired resolution without purchasing the NASA computer! =)

I see many benefits in this approach, as aligning 1000 photos is performed in a single step which gives better accuracy than using many chunks, while the mesh modeling is performed separately.

thanks for your attention and kindest regards