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Prägnanz in visual perception. [PDF]

open access: yesPsychon Bull Rev, 2023
How do we perceptually and cognitively organize incoming stimulation? A century ago, Gestalt psychologists posited the law of Prägnanz: psychological organization will always be as ‘good’ as possible given the prevailing conditions. To make the Prägnanz law a useful statement, it needs to be specified further (a) what a ‘good’ psychological ...
Van Geert E, Wagemans J.
europepmc   +3 more sources

From CAD Models to Soft Point Cloud Labels: An Automatic Annotation Pipeline for Cheaply Supervised 3D Semantic Segmentation

open access: yesRemote Sensing, 2023
We propose a fully automatic annotation scheme that takes a raw 3D point cloud with a set of fitted CAD models as input and outputs convincing point-wise labels that can be used as cheap training data for point cloud segmentation.
Galadrielle Humblot-Renaux   +2 more
doaj   +1 more source

3D Sensors for Sewer Inspection: A Quantitative Review and Analysis

open access: yesSensors, 2021
Automating inspection of critical infrastructure such as sewer systems will help utilities optimize maintenance and replacement schedules. The current inspection process consists of manual reviews of video as an operator controls a sewer inspection ...
Chris H. Bahnsen   +5 more
doaj   +1 more source

Imitating Emergencies: Generating Thermal Surveillance Fall Data Using Low-Cost Human-like Dolls

open access: yesSensors, 2022
Outdoor fall detection, in the context of accidents, such as falling from heights or in water, is a research area that has not received as much attention as other automated surveillance areas. Gathering sufficient data for developing deep-learning models
Ivan Nikolov   +2 more
doaj   +1 more source

Real‐world super‐resolution of face‐images from surveillance cameras

open access: yesIET Image Processing, 2022
Most existing face image Super‐Resolution (SR) methods assume that the Low‐Resolution (LR) images were artificially downsampled from High‐Resolution (HR) images with bicubic interpolation.
Andreas Aakerberg   +2 more
doaj   +1 more source

Who Cares about the Weather? Inferring Weather Conditions for Weather-Aware Object Detection in Thermal Images

open access: yesApplied Sciences, 2023
Deployments of real-world object detection systems often experience a degradation in performance over time due to concept drift. Systems that leverage thermal cameras are especially susceptible because the respective thermal signatures of objects and ...
Anders Skaarup Johansen   +3 more
doaj   +1 more source

Visual perception of collinearity [PDF]

open access: yesPerception & Psychophysics, 2002
In a metrical space, there exists an intimate relation between collinearity and parallelity. In particular, in a Riemannian space collinearity is just a special case of parallelity. Is this true for visual space as well? We investigated the visual perception of collinearity by having subjects align two bars in the horizontal plane at eye height.
Cuijpers, R.H.   +2 more
openaire   +6 more sources

Point Cloud Repair Method via Convex Set Theory

open access: yesApplied Sciences, 2023
The point cloud is the basis for 3D object surface reconstruction. An incomplete point cloud significantly reduces the accuracy of downstream work such as 3D object reconstruction and recognition.
Tianzhen Dong   +3 more
doaj   +1 more source

The hippocampus and visual perception [PDF]

open access: yesFrontiers in Human Neuroscience, 2012
In this review, we will discuss the idea that the hippocampus may be involved in both memory and perception, contrary to theories that posit functional and neuroanatomical segregation of these processes. This suggestion is based on a number of recent neuropsychological and functional neuroimaging studies that have demonstrated that the hippocampus is ...
Andy C. H. Lee   +4 more
openaire   +5 more sources

Analysis and comparison of monofocal, extended depth of focus and trifocal intraocular lens profiles

open access: yesScientific Reports, 2022
To test the feasibility of using profilometers to extract information about IOL surfaces design. A standard monofocal IOL (Tecnis 1), a monofocal IOL that provided some depth of focus (Eyhance), an extended depth of focus IOL based on refractive optics ...
Juan J. Miret   +4 more
doaj   +1 more source

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