Japan's top advertising firm Dentsu Inc. said Monday that it was entering Internet advertising in India, predicting potential for major growth.

Dentsu said it was starting a joint venture, tentatively to be called Clickstreamers India Pvt. Ltd., in a joint venture with Mumbai-based Connecturf India Pvt. Ltd.

The venture, which will open offices in New Delhi and Bangalore, aims at tapping into the "fast-growing Indian Internet advertising market," a Dentsu statement said.

Some 46 million Indians were using the Internet as of September last year, a jump of nearly 43 percent from one year earlier, Dentsu said.

Revenue from Internet advertising in India is expected to rise by more than three and a half times from current levels to be worth more than 200 million dollars in 2012, it said.

Dentsu has set a strategy of expanding digital and overseas operations to make up for a lacklustre market for traditional advertising in Japan.