This paper presents two novel methods for segmenting the solid bed in infrared image sequences of metalrecycling rotary kilns. Exploiting the different dynamics and temperatures of gas phase, solid bed and kiln wall, we developed filter chains for an image segmentation of the solid bed. For the image acquisition we employed infrared cameras with a spectral filter. Two image processing algorithm...

High-quality still-to-still (image-to-image) face authentication has shown success under controlled conditions inmany safety applications. However, video-to-video face authentication is still challenging due to appearance variations caused by pose changes. In this paper, we propose a video-to-video face authentication system that is robust to pose variations by making use of synthesized frontal...

The approaches that analyze local characteristics of an image to impose constraints are prevailing in image restoration, but they are less effective in the cases of severe degradation and heavy noise corruption. In this paper, we incorporate the common characteristics that the images of a class of objects present into image restoration, termed as object-based image restoration. The characterist...

The fast-flying day-active hawkmoth Macroglossum stellatarum (Lepidoptera: Sphingidae) has a remarkable refracting superposition eye that departs radically from the classical principles of Exnerian superposition optics. Unlike its classical counterparts, this superposition eye is highly aspherical and contains extensive gradients of resolution and sensitivity. While such features are well known...

Bistable stimuli are one of the most popular approaches to studying the neural mechanism of conscious visual perception. Such stimuli contain conflicting information, which the visual system cannot integrate into a unified percept. This causes the perceptual state of the observer to change every few seconds between the two interpretations while the physical stimulus remains the same. Binocular ...

Most face recognition systems assume that the geometry of the image formation process is frontal. If additional poses, beyond the frontal one, are possible, then it becomes necessary to estimate the actual imaging pose. Once a face is detected and its pose is estimated one proceeds by normalizing the face images to account for geometrical and illumination changes, possibly using information abo...

Impaired visual processing may play a role in the pathophysiology of visual hallucinations in Parkinson's disease. In order to study involved neuronal circuitry, we assessed cerebral activation patterns both before and during recognition of gradually revealed images in Parkinson's disease patients with visual hallucinations (PDwithVHs), Parkinson's disease patients without visual hallucinations...

BACKGROUND During face identification in humans, facial information is sampled (seeing) and handled (processing) in ways that are influenced by the kind of facial image type, such as a self-image or an image of another face. However, the relationship between seeing and information processing is seldom considered. In this study, we aimed to reveal this relationship using simultaneous eye-trackin...

How do representations of the face in portraits relate to the natural face, and how does the aesthetics of portraits relate to the aesthetics of faces in photographs? Here we investigate these questions with regard to the frontal face. Frontal faces are of particular interest because they are by far the most commonly studied type of face image in psychology, yet frontal portraits have been litt...

Background: Numerous studies have investigated emotion in virtual reality (VR) experiences using self-reported data order to understand valence and arousal dimensions of emotion. Objective physiological concerning has been less explored. Electroencephalography (EEG) can be used examine correlates emotional responses such as environments. Used across varying fields research, images are able elic...