The city and the Boston Police Patrolmen’s Association have agreed to a six-month extension of the body camera pilot program.

Under the program, which was due to expire this month, up to 100 officers are equipped with cameras, recording on-duty police activity. Police initially resisted the move.

Mayor Martin J. Walsh called the extension “a positive development” and said he looks forward “to continuing to build on the success of this pilot program.”

“I thank (police) Commissioner (William B.) Evans and the BPPA for their continued willingness to work together on this initiative,” Walsh said.

Evans said the extension will “provide additional data to assist with the assessment of the program.”

“I am pleased that the pilot program will be continuing through what tends to be our busiest months of the year,” Evans said.

“I would like to thank Mayor Walsh, the union leadership of the BPPA and the officers who are participating in this pilot program for their continued commitment to exploring this new policing tool,” Evans said.

Boston police now will seek bids for an independent analysis of body camera data, technologies, vendors and best practices.

The current budget set aside $500,000 for the pilot program, which is now scheduled to end Sept. 11.