By Mike Collett LONDON (Reuters) - Former World Cup final referee Pierluigi Collina has welcomed the introduction of video technology trials to assist officials and said on Sunday it will end years of frustration for the men in the middle. Collina, the most distinctive and famous referee of modern times, remembered for his piercing blue eyes and bald head, also said the revised laws of the game were a major development in bringing all interested parties in the game together. The decisions to allow a two-year experiment with video technology and change a number of the game's laws were announced on Saturday by soccer's law-making body, the International Football Association Board (IFAB), after a meeting in Cardiff. More...