DTS Inc. sold its digital images business for $7.5 million to Reliance Big Entertainment Ltd. The sale marks the exit from the image enhancement and restoration services business as Agoura Hills-based DTS focuses on its consumer audio business. Reliance is a member of the Reliance ADA Group of India. “The company fits well with the digital services strategy of the Reliance ADA Groip in the global media and entertainment space,” said Anil Arjun, senior vice president of Reliance. DTS shares closed up at $27.04.