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Blogs containing the tag Fotofly
10 Posts
Fotofly PhotoViewer is now available on CodePlex
This week I published onto Codeplex my Silverlight PhotoViewer , my third Open Source Project. Using my Fotofly metadata library , this reusable control displays the photo, people regions and a map of the location. You can use it on your own site to light up all that metadata locked in the file. Here’s what the control looks like.  
Fotofly v0.5 now available on Codeplex
I’ve just published v0.5 of Fotofly on Codeplex . This new version includes the first batch of bug fixes as a result of community feedback. Additionally I’ve started the work to expand the code to deal with multiple GPS sources (exif and xmp). This will be the main focus for v0.6 which I hope to finish sometime this week. I also spent a little time creating a logo. It’s simple but I spent ages rattling through fonts to find something I liked!    
Getting Started with Fotofly
It’s been about two months since I posted Fotofly on Codeplex and I’ve had plenty of feedback and it’s been download over 100 times! What I haven’t written is a simple introduction on how to use the library. So that’s the aim of this blog. Step 1 – Download the Library First you need to download the DLL (or download the source code and build it yourself): Follow this link to download the DLL and save it somewhere you can reference it from your Visual Studio project.  
When and how to use the right BitmapCacheOption setting
I keep stumbling across the consequences of changing which BitmapCacheOption I use. Despite the fact that metadata in a file isn’t really that big in the grand scheme of things, changing which caching option you use can have annoying consequences. The two typical issues I run into are: running of our memory when process lots of files or not having any data to work with. Let’s look at the code:  
Reading Geotagging in Photos Using Windows Imaging Component
In this blog I’m going to explain how Geotagging metadata can be read and written using Windows Imaging Component. First lets look at all the queries. These are the common ones, there are plenty more but I have not found any immediate need to use them.  
Fotofly v0.1 available for Download on Codeplex
After several years of evolving my photo metadata code I’m finally ready to put it online. Being the nice corporate citizen that I am, I’m using CodePlex and you can find Fotofly here for download. My somewhat lofty description of the project is: “A comprehensive C# library for reading, manipulating and writing metadata stored in jpg photos using WPF and the Windows Imaging Component. Includes support for Windows Live Photo Gallery People Tags, GPS Coordinates and most EXIF, XMP & IPTC properties.” Hopefully I’ll get lots of downloads and feedback to help improve it further.    
Reading and Creating Exif Rationals
Quite why Jeida who created Exif decided to use Rationals is beyond me but they did so you have to work with them if you’re playing with jpg metadata. In this blog post I’ll share my Rational class so you don’t have to go through all the pain I went through in creating it. It’s amusingly short now I look at it here but it took way too long to work it out. The class has two constructors, one for the value you’ve retrieved from BitmapMetadata, the second when you’re creating your own rationals.  
Basic Editing of Photo Metadata Using Windows Imaging Component
In my previous posts I’ve provided examples on using Windows Imaging Component to Read & Write jpg metadata. In this post I’ll explain how to use ContainsQuery , GetQuery , SetQuery and RemoveQuery . As an added bonus I’m going to use the IPTC address fields as my example. Whilst BitmapMetadata does provide some standard properties like Subject and Title, it is far from comprehensive. In order to get at the other data you have to provide the right query.  
Writing Photo Metadata Using Windows Imaging Component
In this blog I’m going to build on my previous posting on Reading Metadata and explain how to write metadata stored in a jpg file using Windows Imaging Component . You can find all my blogs on Windows Imaging Component here . If you want to change any of the metadata, the first thing you have to do is make sure there’s room for your changes. This is done by adding padding to the metadata. If you don’t do this, I guess it’s possible to remove data or change it to the exact same size but you can’t add new data. The general recommendation appears to be around 5k, so I normally use 5120.  
Reading Photo Metadata Using Windows Imaging Component
I still see a lot of questions on the Internet and at work on how to read (& write) metadata in Photos. There are plenty of examples out there but they all appear to have some pitfalls. To be quite honest, the code I’ve been using for a number of years now is mature enough that it solves almost all the problems I’ve seen. This blog is the first in a series that document how to read (this blog), write and manipulate photo metadata.  

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