Automate your Meshlab workflow with MLX filter scripts

By , April 3, 2012 6:49 am

Meshlab is a great program for loading and editing XYZ point cloud data and creating polygon meshes. It also does a good job as a 3D file format converter.

After you start using Meshlab for a while you will typically use the same filter settings over and over again for every project. Meshlab allows you to automate your workflow by creating your own Meshlab .MLX filter scripts. These filter scripts are in XML format and can be run from the Meshlab GUI or from the command line version of Meshlab called meshlabserver.

About Meshlab

If you run into trouble using Meshlab there is a SourceForge discussion form that is quite helpful.

I discovered Meshlab when I started processing aerial images with Bundler / PMVS and needed an opensource program to edit Stanford Triangle Format .PLY files. Each time I ran a set of aerial images through Bundler I wanted to create a new polygon mesh from the ASCII PLY file. It can become tedious after a while applying the same Meshlab filters over and over again so I started exploring the world of Meshlab MLX filter scripts.

This blog post is probably one of the most hyperniche topics I have written about. If you are using Meshlab, or Meshlabserver along with SFM programs like Bundler I would really like to hear from you about your projects and experiences.

Continue reading 'Automate your Meshlab workflow with MLX filter scripts'»

Winter in the Barrens Timelapse

By , March 30, 2012 8:45 am

This is a 1080p High Definition timelapse sequence of winter in the West Dover Barrens. The footage was filmed from January to March 2012. Most of the footage was captured using a Peleng 8mm fisheye lens on a Canon D60 with a TC-80N3 intervalometer.

The soundtrack is Merry Synthmas by Roger Subirana Mata.

An Aerial Tour of Privateers Island

By , March 28, 2012 1:04 pm
This is a photo of me holding a ready-to-launch EasyStar model airplane. The plane is fully loaded with camera gear and has a total weight of 1.3kg.

This is a photo of me holding a ready-to-launch EasyStar model airplane. The plane is fully loaded with camera gear and has a total weight of 1.3kg.

On March 21, 2012 my brother and I flew our model EasyStar airplane over Privateers Island in West Dover, Nova Scotia. The plane carried a Canon PowerShot SD780IS digital camera, a Garmin eTrex Legend GPS, and a wireless video camera.

We launched several flights that day starting around 11am in the morning. This is the first year that I can remember wearing a t-shirt and getting a sunburn in March!

During the vertical aerial photo flight we took several hundred photos. The main thing we noticed when we reviewed the aerial photos of Privateers Island was evidence of significant hurricane damage in the forest. There are large areas in the forest canopy that are now open clearings with a lot of fallen trees.

A vertical aerial photo of the launch site.

A vertical aerial photo of the launch site.

The hurricane damage is really visible on the southern part of Privateers Island.

The hurricane damage is really visible on the southern part of Privateers Island.

hurricane damage

Continue reading 'An Aerial Tour of Privateers Island'»

The Last Sunset of Winter

By , March 22, 2012 11:56 am
The Last Sunset of Winter

The Last Sunset of Winter

Here is an HDR image I captured on March 19, 2012 of the last sunset of winter in West Dover, Nova Scotia, Canada. I shot the image handheld using CHDK on my Canon Powershot SD780IS camera and created the HDR in Photoshop.

The weather has been much warmer this March than I have ever experienced. Some years we still have a foot of snow on the ground and ice on the lakes!

Preparing for the First Annual Inter-Gallactic Phantogram Competition and Exhibit

By , March 19, 2012 8:28 am

Recently I got a message from Barry Rothstein on the Phantogram user group announcing an exciting contest for stereoscopic 3D photography enthusiasts.

CALL FOR ENTRIES: in the "First Annual Inter-Gallactic Phantogram Competition and Exhibit". Entry deadline is May 15, 2012. I'll shortly start announcing this on the 3-D sites, and I invite you to spread the news. I've lined up two out of three judges, stereographers Achim Bahr, and Terry Wilson. Categories will be: 1) Nature; 2) Live Subject; 3) Still Life; and 4) CGI. Images will be judged on iPads, and are to be submitted in RGB .JPG files. The iPad's native resolution is 1024x768 pixels, and images can be submitted either in vertical or horizontal orientation. Submitting images denotes a willingness to have them posted online, and to be exhibited in print or digital form. There will be prizes for winners, these will be announced soon, as hopefully I'll be able to line up a few sponsors.

Over the last weekend I got out my photography gear and started taking several new stereoscopic 3D Phantogram images to prepare for the contest. Red / Cyan 3D glasses are required to view the photos.

Carved Whalebone Scrimshaw Phantogram

Carved Whalebone Scrimshaw Phantogram

Checkmate Ends the Game Phantogram

Checkmate Ends the Game Phantogram

Chess Match Phantogram

Chess Match Phantogram

PSION Series 5 PDA Phantogram

This is a stereoscopic phantogram image of a PSION Series 5 PDA

Strawberry Dessert

This is a stereoscopic phantogram image of a strawberry dessert.

Creating an Aerial Mosaic in Microsoft ICE.

By , March 19, 2012 8:00 am
Here is a 1km long aerial mosaic image of Poly Cove in West Dover, Nova Scotia.

Here is a 1km long aerial mosaic image of Poly Cove in West Dover, Nova Scotia.

This morning I created a large aerial mosaic image of Polly Cove, West Dover, Nova Scotia. The mosaic image was stitched in Microsoft ICE from 25 aerial photos taken on Feb 14, 2012. The mosaic image covers a 1 km distance from Highway 333 to the islands off Polly Cove.

The photos were shot with an EasyStar Model airplane using a Canon PowerShot SD780IS camera and CHDK. I used the CHDK countdown intervalometer script to trigger the photos every 2 seconds with a 1/1500 sec shutter speed override.

I started in Microsoft ICE by creating a few smaller mosaic images using the Planar Motion 1 stitch mode and then merged the smaller mosaic's together in a final stitching pass. The full resolution version of the mosaic was 22,114 x 10,549 pixels (233 megapixels).

You can download a scaled down 3.5 megabyte  8Kx4K version of the mosaic image here:  super_polly_cove_mosaic.jpg (Right click on the link and select Save Link As...)

Here is a stitched mosaic in Microsoft ICE from 9 photos.

Here is a stitched mosaic in Microsoft ICE from 9 photos.

The easiest way to stitch the big aerial photo mosaic was by merging together 7 smaller mosaics.

The easiest way to stitch the big aerial photo mosaic was by merging together 7 smaller mosaics.