HoudahGeo 6: A New Way of Lining Up Photos with a GPS Track

Automatic geocoding in HoudahGeo matches photos to a GPS track log. A track log is a record of where you have been. A GPS app or track logger records your current position and the current time. It does so every few seconds and thus creates a breadcrumb trail of your travels.

HoudahGeo figures out where you took a photo by matching the timestamp on the photo with the times in the GPS track log. While the GPS device gets accurate time information from satellites, your camera clock is probably not accurate. Most cameras also do not record time zone information: the photo coming out of the camera may say it was taken at 12 PM, but there is no telling if that is to be understood as 12 PM east coast or west coast – a 3-hour difference.

Timestamps in HoudahGeo

HoudahGeo needs to know the exact time a photo was taken. That is why HoudahGeo asks about camera clock settings when you import images.

There are 4 ways you can tell HoudahGeo about your camera clock settings. The first 3 are found in the Load > Camera Setup… panel. This panel pops up automatically when you import photos that lack time zone information.

You can skip Camera Setup… – accept the current settings – and proceed to import more images and GPS track logs. We will correct the camera clock settings later by matching a key photo to a spot on the track log. Continue reading HoudahGeo 6: A New Way of Lining Up Photos with a GPS Track

Using HoudahGeo 6 With Cameras That Provide Altitude or Heading Measurements

Geocoding using GPS data is arguably the quickest method of adding location information to photos. The GPS data comes in the form of a tracklog file recorded by a GPS device or smartphone app. Every few seconds a record of the current time and location is added to the tracklog.

Besides location coordinates, the GPS device can record additional information like altitude, heading, or speed. When HoudahGeo matches photos to the tracklog it can copy both location coordinates and such additional information to photo metadata.

At the same time, some cameras have sensors that can provide such additional information even when not using a GPS receiver to add location coordinates to a photo.

A compass built into the camera body can, for example, provide viewing direction information. This would be more accurate than a view direction computed from the direction of travel between to locations recorded in the tracklog.

When the same information is available from two sources – the GPS tracklog and photo metadata – you are left with the choice of which to trust.

Continue reading Using HoudahGeo 6 With Cameras That Provide Altitude or Heading Measurements

Summer: Time to Travel Reminisce

Summer is here. Summer holidays are just around the corner. This is the time of year when many of us usually plan to travel and explore the world. Not so this year.

Explore. Reminisce. Show

This year we can reminisce about past travels and adventures. This summer we can dig into our well-organized photo collections. Photos organized by location now allow us to virtually jump around the globe and through time. We can explore photos in Google Earth to feel teleported to places we had the luck to visit. With photos pinned to precise map locations, we can retrace our steps in Google Maps. Nothing refreshes the memory like photos combined with the aerial views that reveal how the individual pictures connect.

Photos on Google Maps
Photos on Google Maps: Visit to Taj Mahal

Continue reading Summer: Time to Travel Reminisce

HoudahGeo 6.0 Video Tutorial

Todd Olthoff of ScreenCastsOnline takes you on a tour of HoudahGeo 6.

HoudahGeo 6 is an application packed with features to help geocode and add metadata to your photos. With its simple steps of Load, Process, and Output; with all of the features packed in each of these steps HoudahGeo is the application that could start your entire photo workflow and it is the first application that launches when I load my photos to make sure I have all of the metadata embedded in the images themselves so that that data will follow the photo into any photo management application I choose to use.

Todd walks you through the various ways to get photos into HoudahGeo and then covers all of the steps from geocoding, over exporting metadata, to sharing and publishing. Todd does an excellent job describing the many features and finer details. We recommend all HoudahGeo users watch this tutorial.

Continue reading HoudahGeo 6.0 Video Tutorial

How-to: Correct an Incorrect Camera Time on Photos

When you import photos into HoudahGeo, it asks about your camera clock settings. HoudahGeo needs accurate time information so it can match photos to GPS tracklogs. Thus HoudahGeo needs to know what time zone your camera clock was set to and if the clock was going slow or fast.

Let’s look at an example. You traveled to Croatia but left your camera clock set to UK time. The camera had been left unused for a while and the clock is going 5 minutes fast.

Camera clock settings. Camera was set to UK time going 5 minutes fas
Camera clock set to UK time. Going 5 minutes fast

Continue reading How-to: Correct an Incorrect Camera Time on Photos