When taking pictures, professional photographers employ a variety of composition rules. In automating these rules, it is often rst necessary to detect and segment the main subject. We propose an detection and segmentation algorithm that leverages the optics in a digital still camera. Based on where the user points the camera, an auto-focus lter rst puts the main subject in focus and takes a pic...

The extent of picture degradation of speckle, in particular in synthetic aperture radar pictures, has been investigated in the cases where an observer has to detect (a) a small feature immersed in a darker background, and (b) a square wave grating. In each case, a theoretical model is developed for the observer's detection mechanism, and the probability of correct decision is related to relevan...

Three experiments showed that the pattern of interference of single-modality Stroop tests also exists cross-modally. Distractors and targets were either pictures or auditory words. In a naming task (Experiment 1), word distractors from the same semantic category as picture targets interfered with picture naming more than did semantically unrelated distractors; the semantic category of picture d...

This study focuses on priming as a function of exposure to bimodal stimuli of European Portuguese screen centred single words and isolated pictures inserted at the screen’s right upper corner, with four kinds of word-picture relation. The eye movements of 18 Portuguese native university students were registered while reading four sets of ten word-picture pairs, and their respective oral recall ...

A method is proposed for partitioning input scenes into regions in which selected picture properties are regarded as uniform. In this procedure, usual statistical methods of in­ specting average gray levels are not used, but the uniformity of complex picture proper­ ties such as shapes, sizes or arrangements of subpatterns in the pictures is examined by a structural analysis. The analyzing proc...

We propose a new model for defining picture languages inspired by the idea of formalizing an assembly mechanism of tiles based on rules. More precisely, a picture language will be generated from a finite set of initial pictures by iteratively applying rewriting rules from a given finite set of rules, called a tiling rule system ( t-RS system). We prove this model has greater generative capacity...

Showing an arousing central stimulus in a scene often leads to enhanced memory for the arousing central information and impaired memory for peripheral details. However, it is not clear from previous work whether arousing stimuli impair memory for all nonarousing nearby information or just background information. In several experiments, we tested how emotionally arousing pictures affect memory f...

How word production unfolds remains controversial. Serial models posit that phonological encoding begins only after lexical node selection, whereas cascade models hold that it can occur before selection. Both models were evaluated by testing whether unselected lexical nodes influence phonological encoding in the picture-picture interference paradigm. English speakers were shown pairs of superim...

Emotions have a strong influence on the perception of visual and auditory stimuli. Only little is known about the relation between emotional stimulation and olfactory functions. The present study investigated the relationship between the presentation of affective pictures, olfactory functions, and sex. Olfactory performance was assessed in 32 subjects (16 male). Olfactory sensitivity was signif...

Using a picture-word paradigm, we investigated age differences in distraction from to-be-ignored pictures. On each trial, participants viewed a prime word that was superimposed on an irrelevant picture, followed by a test word. The task was to determine whether the prime and test words were semantically related. The pictures were either congruent or incongruent with the response. On control tri...