Abstract: Various methods and systems are provided for annotating medical images such as ultrasound images. For example, a method for annotating a medical image includes segmenting a region of interest in the medical image, annotating the medical image by separately adjusting a value of each pixel in the region of interest, and outputting the annotated medical image to a display. As a further example adjusting the value of each pixel may include overlaying the pixel with color, colorizing the pixel based on the value of the pixel, and/or intensifying the value of the pixel.

Abstract: An audio mixer system is described for producing coded output in which at least a left audio signal, a right audio signal and a surround audio signal are encoded in two output channels so that the surround signal can be decoded from the difference of the two output channels. The system comprises means for generating position data designating a desired position for a sound source in a 360 degree sound field. Logic is provided for determining the relative volume of the sound source in the left, right and surround audio signals from the position data. A signed continuity factor is maintained so that the sign of the continuity factor is changed in response the desired position crossing a nominal position of the surround signal in the sound field and logic is provided for encoding the sound source data into the two output channels in accordance with the determined relative volume of the sound source in at least two of the left, right and surround signals each multiplied by the continuity factor.