This paper presents a Windows based system for image analysis and computer vision of mineral froth. To make the system work efficiently both in laboratory and in the plant, the main content of the system consists of image acquisition, image processing, froth (bubble) delineation, froth analysis and modeling, and interface between different computers in use. Hundreds of functions for froth analysis and statistics are included in the system, especially in the froth delineation part. A number of newly-developed algorithms can delineate bubbles with high accuracy and high speed.