Mayor Bill de Blasio on Wednesday touted a series of safety improvements in public housing developments that followed a worrisome surge in violence.

He said that more police officers have been dispatched to the housing projects, more cameras have been installed and even more scaffolding has been removed.

De Blasio pledged to increase the rate of repairs in the New York City Housing Authority buildings, which in turn would lead to the removal of the scaffolding, also known as “sidewalk sheds.” Some residents have complained that the scaffolding cuts off the light and creates an environment for crime to flourish.

“We learned that these sheds, these scaffolding that you see around you were part of the landscape and a really bad part of the landscape for years,” said de Blasio, during a press conference at East Harlem’s Lincoln Houses, the same housing authority development where, at the behest of the Rev. Al Sharpton, he and other mayoral candidates spent a night last summer.

De Blasio said the city had begun the process of removing 43,000 feet — almost eight miles — of scaffolding by next summer and said that all unused sidewalk sheds would be removed from housing authority buildings by the end of 2015.

In a bit of political stagecraft, a team of workers was removing the scaffolding from one building in the Lincoln Houses as the mayor spoke, at times threatening to drown out de Blasio.

But that wasn’t the only time de Blasio lost center stage: a pair of hecklers interrupted the press conference shouting for more security and disputing the notion that the buildings had gotten safer.

De Blasio said he understood their concerns.

“I don’t blame anyone who’s feeling that there isn’t enough yet in the way of improvement,” he said. We have a lot to do.”

Violent crime rose sharply in public housing developments earlier this year, punctuated by the fatal stabbing of a 6-year-old boy in Brooklyn in June.

Since then, the NYPD identified that 15 of the 334 housing projects were responsible for more than 20 percent of the housing authority’s overall crime. The city has poured additional police officers into those projects and de Blasio allocated more money for the installation of security cameras across the system, which houses more than 400,000 people.

Crime has fallen across the public housing system by 4 percent from a year ago, according to the NYPD. Shootings remain up in the city’s public housing developments over the course of the entire year though they have fallen since July 1.

(AP)