STAMFORD — A Greenwich socialite who pleaded guilty to voyeurism charges after she filmed three individuals, including a minor, without their consent, was released Wednesday after serving 90 days in prison, court officials said.

Hadley Palmer, 53, had been incarcerated in the York Correctional Institution, the state prison for women in Niantic, since Feb. 4 as part of a plea agreement with state prosecutors.

Assistant State’s Attorney Daniel Cummings said Wednesday the state had stipulated in the agreement that Palmer would serve prison time before her sentencing to ensure that she served at least the minimum sentence possible.