The stakes for a network like Discovery are high. The show produces real ratings for the network, as does its spinoff, “Naked and Afraid XL,” which debuted to the best numbers of any first-year unscripted cable show last year with an average of 3.7 million viewers, according to Nielsen. (The shows have broken through in other ways: “Saturday Night Live” had its own “Naked and Afraid” spoof this month featuring Peter Dinklage and Leslie Jones.)

Image Johnny Hestich, a designer at the production company Renegade 83. Credit... Coley Brown for The New York Times

The risks are high, too. After the first wave of success for “Naked and Afraid” in 2013, other naked-themed reality shows like TLC’s “Buying Naked” and VH1’s “Dating Naked” followed. Two years ago, a woman sued VH1 and the production team of the show “Dating Naked” after she contended that a blur did not fully cover her crotch. (The suit was thrown out.)

“It’s something we live in constant fear of,” said Steve Rankin, an executive producer, referring to prospective lawsuits. He added: “The Discovery Channel is not an R-rated network. It’s seen by families. We don’t want to upset people.”

Enter the Blur Man Group.

Just a few years ago, these designers were having a difficult time finding regular work. They were all graphic artists, and most of them were moving through different jobs in television.

Then the production company Renegade 83 conceived of “Naked and Afraid” and Discovery gave it the green light and a Sunday night time slot. But the only way to do a kind of nude “Survivor” was to find people who could make it suitable for broadcast.

And what a job it is.

“People talk about the whole aspect of nudity,” Mr. O’Steen said. “That goes away really quick.” He added, “There’s a job you have to do.”