Results 21 to 30 of about 842,482 (293)
Soft bilateral filtering volumetric shadows using cube shadow maps [PDF]
PLOS ONE, 2017 Les ombres volumétriques augmentent souvent le réalisme des scènes rendues en infographie. Les techniques d'ombres volumétriques typiques ne fournissent pas un effet de transition en douceur en temps réel avec une conservation sur la netteté des limites.
Hatam H. Ali +2 more
openaire +4 more sources
, 2022 Shadow is a Matlab toolbox written to detect the GNSS satellite in the shadow of the earth and remove them from the RINEX observation file. The main toolbox performs the following tasks: 1- Reads Rinex observation file 2- Reads precise ephemeris file
Amir Allahvirdi-Zadeh (12012920) +1 more
core +1 more source
Refined UNet V2: End-to-End Patch-Wise Network for Noise-Free Cloud and Shadow Segmentation
Remote Sensing, 2020 Cloud and shadow detection is an essential prerequisite for further remote sensing processing, whereas edge-precise segmentation remains a challenging issue.
Libin Jiao +3 more
doaj +1 more source
Low-Pass Filtered Volumetric Shadows
IEEE Transactions on Visualization and Computer Graphics, 2014 We present a novel and efficient method to compute volumetric soft shadows for interactive direct volume visualization to improve the perception of spatial depth. By direct control of the softness of volumetric shadows, disturbing visual patterns due to hard shadows can be avoided and users can adapt the illumination to their personal and application ...
Marco Ament +3 more
openaire +4 more sources
Distinguishing shadows from surface boundaries using local achromatic cues.
PLoS Computational Biology, 2022 In order to accurately parse the visual scene into distinct surfaces, it is essential to determine whether a local luminance edge is caused by a boundary between two surfaces or a shadow cast across a single surface.
Christopher DiMattina +3 more
doaj +1 more source
Vectorisation of Sketches with Shadows and Shading using COSFIRE filters [PDF]
Proceedings of the ACM Symposium on Document Engineering 2018, 2018 Engineering design makes use of freehand sketches to communicate ideas, allowing designers to externalise form concepts quickly and naturally. Such sketches serve as working documents which demonstrate the evolution of the design process. For the product design to progress, however, these sketches are often redrawn using computer-aided design tools to ...
Alexandra Bonnici +2 more
openaire +1 more source
Multitarget Tracking Algorithm Using Multiple GMPHD Filter Data Fusion for Sonar Networks
Sensors, 2018 Multitarget tracking algorithms based on sonar usually run into detection uncertainty, complex channel and more clutters, which cause lower detection probability, single sonar sensors failing to measure when the target is in an acoustic shadow zone, and ...
Xueli Sheng +4 more
doaj +1 more source
Applied Sciences, 2020 Current automatic shadow compensation methods often suffer because their contrast improvement processes are not self-adaptive and, consequently, the results they produce do not adequately represent the real objects.
Yuanwei Yang +4 more
doaj +1 more source
Feature improvement for classification of face images under varying light conditions using a hybird algorithm [PDF]
Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2020 Image improvement is an important process for enhancing the quality of facial images under varying light condition in which shadow and light affects the performance of feature extraction and face recognition.
Witas Jaturongkorn
doaj
Vehicles Speed Estimation Model from Video Streams for Automatic Traffic Flow Analysis Systems
JOIV: International Journal on Informatics Visualization, 2023 Image and video processing have been widely used to provide traffic parameters, which will be used to improve certain areas of traffic operations. This research aims to develop a model for estimating vehicle speed from video streams to support traffic ...
Maizatul Najihah Arriffin +6 more
doaj +1 more source