Abstract: An air quality measurement apparatus, including a first air inlet providing a first air sample within a space; a device which is configured to draw an air sample through the first air inlet and over a sensor, wherein the sensor measures the first air sample for a first environmental condition; an air outlet for expelling the first air sample from said apparatus; a second air inlet providing a second air sample externally from the space to measure the first environmental condition whereby the second environmental condition is compared to the first environmental condition to provided data to a user regarding the difference.

Abstract: A computer-implemented image analysis process including accessing image data and range data representing an image of an animal, measuring an object volume from the range data and estimating the animal's weight using the dimensions representing the animal's size. A database containing relative volume and weight information can then be used to accurately predict the animal's weight from calculating its volume.

Abstract: A computer-implemented image analysis process, including: accessing image data representing an image including an animal object representing an animal; selecting one more start points on a boundary of the animal object using an intensity gradient of the image; and generating boundary data, representing at least a portion of the boundary, starting at each of the selected one or more start points, using the intensity gradient.