InfoComm releases standard for display image size

InfoComm International has released a new standard for sizing displayed images for AV systems: ANSI/INFOCOMM V202.01:2016, Display Image Size for 2D Content in Audiovisual Systems.

Currently, the methods AV professionals use to calculate appropriate image size arent attributed to a particular source. Therefore, a task group of subject matter experts developed the standard in order to establish universal methods and metrics for determining image size.

Display Image Size for 2D Content in Audiovisual Systems determines required display image size and relative viewing positions according to two defined viewing needs: basic decision making and analytical decision making. These two viewing categories are derived from ANSI/INFOCOMM 3M-2011 Projected Image System Contrast Ratio (PISCR). Image height, image resolution, and the size of image content are all prescriptive elements when determining required image size.

The standard also addresses closest and farthest viewing distances, as well as relative horizontal and vertical viewer locations. It provides formulas to design and display content when encountering limitations in an environment. In addition to the standard, InfoComm will be providing a calculation/assessment tool on its website for determining proper display image size based on viewer needs.

Until now, the AV industry has used guidelines that served their purpose in a different era, but whose provenance and basis could not be verified. The task group went back to basics and also referenced leading research and military standards, said Greg Jeffreys, director of Visual Displays, and moderator for the standard task group. As a designer and maker of large-screen displays, this standard will have a significant impact on my professional work. It will enable me to help clients to define what a good user experience comprises, and it gives me the tools and metrics to deliver just that.

Content has historically been a part of the design consideration for image size. Content description, however, has been vague and its interpretation has been up to the designer, said Dick Tollberg, CTS-D, senior design engineer for AVI-SPL and member of InfoComms Standards Steering Committee. Before the standard, there was no way to quantify content in such a way that the designer could ensure that the image size was correct. The standard gives direction to the creators and presenters of the content, while allowing the designer to use familiar methods to determine the correct image size for a given room. If the designer and the content adhere to the standard, the designer can guarantee that the image size will be satisfactory for all room participants.

To access the standard, visit www.infocomm.org/standards

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