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Book Excerpt - Implementing a Digital Asset Management System: Workflow Integration
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Book Excerpt - Implementing a Digital Asset Management System: Workflow Integration

January 24, 2006 Article Start Page 1 of 2 Next

The following is a selected excerpt from Implementing a Digital Asset Management System (ISBN 0-240-80665-4) published by Focal Press.


Depending on the type of project you are working on, there may be a high potential for process automation and optimization. While this is not necessarily something to worry about from the start, it is one of the ideal ways to profit from a DAM system. Any kind of automation also has the advantage that it results in improvements for the users, giving them a reason to appreciate the extra work that they have to put into using the DAM.

How processes can be automated and improved depends largely on the DAM system you are using. Even if you are only using a well-managed directory structure on your server, you can still write scripts that maintain and control data.

Use metadata

Many DAM systems offer metadata storage. Metadata can be used to provide the users and the system with information about the assets stored in the database. The most common example is EXIF information stored in images made by digital cameras. This typically includes detailed information about when and with what settings the pictures were taken, but it can also tell the system how the camera was held when the picture was taken. This allows an image viewer to automatically rotate the image to display it on screen.

Metadata is either automatically generated, as in a digital camera, or it can be added by the user. If you create an asset library with thousands of images, it's sensible to use metadata to describe the images so they can be found easily later on.

If you want to automate data management, you can also use metadata to tag files in your asset management system. For example, if you mark all files that should later be used for distribution, it is then very easy to set up tools to search for this information in the database and automatically extract all the assets that are tagged accordingly.

Adding metadata can be a tedious task, and getting every user to faithfully add the relevant information can be difficult. Therefore, try to make this as easy as possible but also make sure that users can't work around the process. It helps to give users pre-defined values that they can choose from. One good way to encourage metadata entry is to use popup dialogs that ask for specific information upon import.

As an example, think about an image library. You want to make sure that images have enough metadata to be located quickly later. Using a text field that can be filled with any kind of description may lead to unsearchable information—words could be misspelled and descriptions may be subjective. Decide beforehand which criteria can be used to describe the images and then use selection boxes to allow the user to pick from these options. A free text field should only be used for additional information.

Some DAM systems provide annotations: metadata that is used to mark change request in assets

Having incomplete information in your DAM will make it unusable, and if the users ever get the impression that the metadata is incomplete they will stop relying on it. When rolling out your DAM, make sure that any kind of metadata you want to use in there is already defined, and that it is clear to users what they are supposed to provide the system and what they can search for.

Automate repetitive tasks

Repetitive tasks are the first thing that can be automated once you have a well-defined data structure. Imagine that you are creating textures for 3D visualization. This is typically done in a 2D application such as Photoshop and the result is then exported to the format of the 3D engine being used. Most 3D engines prefer textures in a specific resolution and bit depth, and in some cases you even need different resolutions of the texture. For users, this means that after they complete a change they have to save the original file, then make sure it is converted to the correct format, and finally move it to the correct target locations.

Most of this can easily be automated; you can even have scripts to check the result. All users have to do is to save their changed files and then tell the DAM to do the rest. With proper logic, the script can even check the texture for the correct format and send the user an error notification if anything is wrong.

Automating with scripts is very easy even for the inexperienced programmer. Start with the single steps that you want to automate and then slowly build a set of tools to take the burden away from the user. Most operating systems have built-in automation tools that can interface with applications on different levels. Examples are Shell scripts on Unix derivatives, the Windows Scripting Host, and Apple Script.

An automated conversion or compilation pipeline can automate data exchange between departments

Integrate your tools

Having external scripts helps the user significantly, but it is even better if the applications being used can directly interface with the DAM system. Many companies that work with in-house formats create their own tools. This is especially true for game companies and large CG productions. Since these specialized applications are created by the users, they can change any aspect of it that they want to. If the DAM system you are using is open enough, these in-house tools can directly interface with the DAM, ridding the user of the need to work outside of them.

As soon as the content creation tools are tightly integrated with the DAM, production can also benefit from the additional information that they can store in a DAM. If the DAM supports some kind of meta-information storage, the integrated applications can add information that it needs to “understand” the assets.

To use 3D data as an example again, once a 2D application has finished exporting an image to the DAM in all required resolutions, it could then add information about the file it came from to each resulting image. If after two years of working you suddenly realize you have to change something in the exported texture, you can simply click on the texture in your DAM-integrated tool, and it will tell you which original file has to be modified to perform the changes you need.

Alienbrain offers plug-ins for most major 2D and 3D tools

Although integrating tools with a DAM creates an extremely powerful solution, it is only feasible for companies with experienced programmers. Most applications and tools require C programming experience to customize, and writing good and usable tool integrations requires much experience in the tool's use.

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