By Reiji Murai and Sophie Knight TOKYO (Reuters) – Sony Corp is counting on the boom in smartphones and the markets voracious appetite for megapixels – vital to better quality video calls and selfies – to sustain the double-digit revenue growth in its image sensor business. Sony expects its sales of imaging sensor chips to jump 16 percent to 360 billion yen ($3.52 billion) in the year ending this month. Sony dominates the imaging sensor segment. Its high-end imaging chips are the film in the main cameras of both Apple Incs iPhone 5S and Samsung Electronics Co Ltds Galaxy 4, according to a break-down analysis of those products.