Apollo Aerial Systems's Activities

[Contextcapture] Accurate/inaccurate metadata georeferencing

Oto — Tue, 04 Jun 2019 07:01:27 GMT

What is difference between accurate and inaccurate position setting in aerotriangulation? Even if choosing accurate metadata it still uses compute method for position/rotation and produces wrong results even initial positions are correct. How accurate should be positions to count as accurate metadata?

Why even in accurate georeferencing the positions seems to be ignored? Seems the aerotriangulation is too relax and accurate metadata can be used even with consumer grade GNSS.

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Sun, 02 Feb 2020 18:09:58 GMT

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Webinar Photo acquisition

Apollo Aerial Systems — Fri, 31 Jan 2020 16:55:52 GMT

Hello all:

I recently viewed a webinar on photo acquisition using both aerial images (drones) and terrestrial photos. It was done by Casey Bentley and he went through 3 complex projects showing how to best acquire images using drones and hand held cameras. One of the projects was a detailed model of a building and had both exterior and interior views of the facility. I think it was a recent SIG workshop that had been recorded. I am trying to find this video again however an not having any success. Can someone point me to where it is located.

Thanks in advance Farouk Rohoman

Camera Model for Arial Photography for Contextcapture

Thulasivarman Kadampeswaran — Mon, 05 Dec 2016 08:29:29 GMT

I want to model a 100 km road. So I planned to take photographs using Helicopters. What is the best camera and lens companion for this work?

Aerial Triangulation report

Apollo Aerial Systems — Mon, 30 Sep 2019 14:49:31 GMT

Is there any good documentation or videos on how to interpret the various components of the aerial triangulation report ?

Farouk Rohoman

Context Capture editor

Apollo Aerial Systems — Tue, 08 Aug 2017 12:58:45 GMT

I have a license of Context Capture. Does this include Context Capture Editor or is Editor a separate module that has to be purchased.

Bentley licensing is very confusing

Farouk Rohoman

Photo acqusition

Apollo Aerial Systems — Tue, 12 Mar 2019 14:45:19 GMT

I create models from aerial photos taken from a fixed wing or helicopter. Most of my projects are buildings or small rectangular areas and I normally fly in a circle and shoot overlapping oblique images focusing on a point in the centre of the area. I have some projects along roads (see image) that are long and narrow and wanted to get a better idea of the optimal route to fly and collect the images. I am also looking at the best way (flight diagram) to collect images to cover a large area, 15-20 city blocks. I use a hand held camera and can’t take nadir images only oblique Any suggestions appreciated

Control Points

Apollo Aerial Systems — Sat, 02 Mar 2019 15:26:34 GMT

When running AT using control points there are 2 options. The manual says:

Use control points for adjustment (need a valid control point set): The block is accurately adjusted to control points (advised when control points accuracy is consistent with the resolution of input photos).
Use control points for rigid registration (need a valid control point set): The block is rigidly registered to control points without handling long range geometric distortion (advised for inaccurate control points).

What is the difference between accurately adjusted and rigidly registered and when would you use one or the other?

Do you require a license for CC Viewer

Apollo Aerial Systems — Wed, 06 Feb 2019 18:48:49 GMT

In the past I could download the CC Viewer and install it locally on a number of my clients computers to view 3D models. Now under Connect services it seems that I have to connect to the hosted server and validate a license to run the viewer. Is this correct and if so why the change? How can I provide 3mx models to third party clients for viewing. I realize that I can publish web models but many of my clients do not have reliable internet access

Farouk Rohoman

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Tue, 19 Feb 2019 14:21:09 GMT

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Acute3D viewer stereo

Apollo Aerial Systems — Fri, 27 Apr 2018 14:13:23 GMT

I am trying to use the stereo (quad buffer) option in the Acute3D viewer. Set the parameters and turned stereo on but it does not display the left/right images. This function used to work in the original Smart3D Capture viewer with s3c files. This was before Bentley took it over and revised/removed this functionality. Has anyone used this successfully

I logged a service request on this over 1 1/2 years ago but nothing happened

Farouk Rohoman

AT failed during keypoint extraction

Peter Dietz Larsen — Mon, 01 Oct 2018 11:05:03 GMT

I have 10 aerial photos and want to create an AT, but it fails during keypoint extraction. The 10 photos are divided into 10 photogroups with one photo in each group. Could that be the problem and how does I fix it then?

Kind regards Peter

Camera orientation portrait images

Apollo Aerial Systems — Fri, 24 Aug 2018 18:59:07 GMT

I am trying to create a production of a small object (close range photogrammetry) using cc. The object is ~ 12 cm x 4 cm , tall and narrow. I have taken images around the object (indoors no geo-referencing) with my camera rotated 90 degrees (portrait format) and pointing horizontally (parallel to the xy plane) to the object The resulting AT is extremely poor as shown

I took oblique images around the object, again in portrait format and the AT was better but still not acceptable as shown:

My camera was set to auto-rotate images and there was a warning that “photos have portrait rotation” I turned the auto-rotate function off and re took the images (as suggested by Bentley support), Images were landscape format with no warning but the AT was worse than before .

I would like to create models of statues/monuments that are tall but not wide so portrait images would be the best format. Has anyone come across this problem; any suggestion/help is much appreciated.

CC surface constraints

Apollo Aerial Systems — Mon, 28 May 2018 14:36:06 GMT

Hello all: I am trying to use a surface constraint in a reconstruction to "flatten" a water surface. I digitized the surface in Google Earth and saved the polygon as a kml file. When I try to add it as a surface constraint in a new reconstruction I get and error "Cannot add surface constraint, does not intersection the reconstruction" I have tried various SR systems without any success. I have tried various parameters "clamped to ground" etc. when creating the polygon but can seem to get it to work Any suggestions as to what I an doing wrong.

Farouk

Convert 3mx to Esri Arcmap multipatch

Apollo Aerial Systems — Wed, 27 Jun 2018 15:58:00 GMT

I created a 3mx file and would like to convert it into an ESRI multipatch feature, I know that you can output a scene layer package but as far as I know this is for loading into ArcGis Online

I wanted to create a multi-patch in a file geodatabase. Arcmap will convert an obj or Collada dae file but both of these have no spatial reference when exported from Context Capture. Any suggestions would be appreciated

Farouk Rohoman