"visual summary" is correct and usable in written English.
For example, you could say: "Providing a visual summary of the data allowed us to easily identify trends and patterns."
"What's most useful about wearables is they can show me the data visualization--i.e. the visual summary of whatever metric a patient is tracking over time--because it gives me a snapshot of what their life looks like when they are not in my office.
For overview specific tasks, Wongsuphasawat et al. proposed LifeFlow, a novel visualization that simplifies and aggregates temporal event sequences into a tree-based visual summary [ 27].
"The sensuality and impact of the experience is richer and more important than description or a visual summary".
His house in Spitalfields, to which he moved from a Hampstead flat too small to accommodate all his records, was a kind of visual summary of Greenfield's life.
It's not really important plot- or set-wise, but it's a wonderful visual summary of the theme of the show.
It's hard to think of a more apt visual summary of the social schisms that inspired Shaw to write "Pygmalion" than the choreography that Matthew Bourne, the artistic director of Adventures in Motion Pictures, has provided for its musical spinoff.
AL Kennedy has argued that authors are not the right people to make decisions on design: "I can't even write the blurb on the back of my covers, so I'm the last person you'll find suggesting a visual summary of a novel's salient points," she told The Daily Telegraph in 2004.
As he points this out on a photograph, we see the perfect visual summary of the situation: sitting outside the fence, on the last piece of American soil, a well-manicured golf course looks across the river at a densely populated Mexican town.
You can also see a more visual "summary" of the data.
Figure 5 offers a visual summary of the reported efficiencies for the different dye classes.
Figure 6 provides a visual summary of publications by conferences and year.
