Tracking multiple objects using intensity-GVF snakes

Active contours or snakes are widely used for segmentation and tracking. Multiple object tracking remains a difficult task, characterised by a trade off between increasing the capturing range of edges of the object of interest, and decreasing the capturing range of other edges. We propose a new external force field which is calculated for every object independently. This new force field uses prior knowledge about the intensity of the object of interest. Using this extra information, this new force field helps in discriminating between edges of interest and other objects. For this new force field, the expected intensity of an object must be estimated. We propose a technique which calculates this estimation out of the image

Automatic analysis of biological images

In order to assist scientists with tests that demand quantitative image analysis, we have developed several computer vision techniques (CVT’s) to automate the outlining of objects in images or videos. Our work has been done for samples at macroscopic and microscopic scales. Image data sets employed in our experiments include in-vivo and in-vitro samples of animals and plants

Imaging techniques and the early detection of plant stress

A

Seeing is believing: imaging techniques to monitor plant health

A

Imaging techniques in plant physiology and agronomy: from simple to multispectral approaches

B