Peripheral motion displays: Tapping the potential of the visual periphery

We address the challenge to develop a 'peripheral display' with information readable from the corner of the eye. This interest is spurred by the need to convey information outside the central vision, in order to allow the operator the freedom to look elsewhere in the world. We show that low contrast motion patterns are particularly suited. The...

On the relationship between human search strategies, conspicuity and search performance

We determined the relationship between search performance with a limited field of view (FOV) and several scanning- and scene parameters in human observer experiments. The observers (38 trained army scouts) searched through a large search sector for a target (a camouflaged person) on a heath. From trial to trial the target appeared at a different...

Vehicle ego-motion estimation with geometric algebra

A method for estimating ego-motion with vehicle mounted stereo cameras is presented. This approach is based on finding corresponding features in stereo images and tracking them between succeeding stereo frames. Our approach estimates stereo ego-motion with geometric algebra techniques. Starting with a simple linear estimate of the ego-motion,...

Image-based aircraft pose estimation: a comparison of simulations and real-world data

The problem of estimating aircraft pose information from mono-ocular image data is considered using a Fourier descriptor based algorithm. The dependence of pose estimation accuracy on image resolution and aspect angle is investigated through simulations using sets of synthetic aircraft images. Further evaluation shows that good pose estimation...

Computing visual target distinctness through selective filtering, statistical features, and visual patterns

This paper presents three computational visual distinctness measures, computed from image representational models based on selective filtering, statistical features, and visual patterns, respectively. They are applied to quantify the visual distinctness of targets in complex natural scenes. The measure that applies a simple decision rule to the...

Image-based aircraft pose estimation using moment invariants

The problem of estimating aircraft pose information from mono-ocular image data is considered using two different pose estimation algorithms. Both algorithms are based on the rotation invariant moment approach that was introduced by Dudani. The dependence of pose estimation accuracy on image resolution and aspect angle was investigated through...

Image Generation and Image Analysis on Transputers

The TNO Physics and Electronics Laboratory (TNO-FEL) in The Hague is part of the TNO Defence Research (TNO-DO) of the Netherlands Organisation for Applied Scientific Research. The activities of TNO-FEL focus primerily on operational research, information processing, communication and sensor systems. To support the fast data-processing often...