LADAR scene description using fuzzy morphology and rules

2003 ◽  
Author(s):  
J.M. Keller ◽  
P. Gader ◽  
Xiaomei Wang
Keyword(s):  
Fuzzy Morphology ◽  
Scene Description

scholarly journals Impact of Scene Content on High Resolution Video Quality

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2872
Author(s):  
Miroslav Uhrina ◽  
Anna Holesova ◽  
Juraj Bienik ◽  
Lukas Sevcik
Keyword(s):  
Video Compression ◽  
Spatial Information ◽  
Video Quality ◽  
Video Sequences ◽  
Compression Efficiency ◽  
Opinion Score ◽  
Scene Description ◽  
Two Parameters ◽  
The University ◽  
The Impact

This paper deals with the impact of content on the perceived video quality evaluated using the subjective Absolute Category Rating (ACR) method. The assessment was conducted on eight types of video sequences with diverse content obtained from the SJTU dataset. The sequences were encoded at 5 different constant bitrates in two widely video compression standards H.264/AVC and H.265/HEVC at Full HD and Ultra HD resolutions, which means 160 annotated video sequences were created. The length of Group of Pictures (GOP) was set to half the framerate value, as is typical for video intended for transmission over a noisy communication channel. The evaluation was performed in two laboratories: one situated at the University of Zilina, and the second at the VSB—Technical University in Ostrava. The results acquired in both laboratories reached/showed a high correlation. Notwithstanding the fact that the sequences with low Spatial Information (SI) and Temporal Information (TI) values reached better Mean Opinion Score (MOS) score than the sequences with higher SI and TI values, these two parameters are not sufficient for scene description, and this domain should be the subject of further research. The evaluation results led us to the conclusion that it is unnecessary to use the H.265/HEVC codec for compression of Full HD sequences and the compression efficiency of the H.265 codec by the Ultra HD resolution reaches the compression efficiency of both codecs by the Full HD resolution. This paper also includes the recommendations for minimum bitrate thresholds at which the video sequences at both resolutions retain good and fair subjectively perceived quality.

Inconsistencies in Overdose Suicide Death Investigation Practice and Potential Remedies Using Technology: A Centers for Disease Control and Prevention Consultation Meeting Summary

2021 ◽  
pp. 192536212110224
Author(s):  
Melissa C. Mercado ◽  
Deborah M. Stone ◽  
Caroline W. Kokubun ◽  
Aimée-Rika T. Trudeau ◽  
Elizabeth Gaylor ◽  
...  
Keyword(s):  
System Integration ◽  
Data Privacy ◽  
Burden Of Proof ◽  
The United States ◽  
Privacy And Security ◽  
Death Scene ◽  
Undetermined Intent ◽  
Control And Prevention ◽  
Scene Description ◽  
Death Investigation

Introduction: It is widely accepted that suicides—which account for more than 47 500 deaths per year in the United States—are undercounted by 10% to 30%, partially due to incomplete death scene investigations (DSI) and varying burden-of-proof standards across jurisdictions. This may result in the misclassification of overdose-related suicides as accidents or undetermined intent. Methods: Virtual and in-person meetings were held with suicidologists and DSI experts from five states (Spring-Summer 2017) to explore how features of a hypothetical electronic DSI tool may help address these challenges. Results: Participants envisioned a mobile DSI application for cell phones, tablets, or laptop computers. Features for systematic information collection, scene description, and guiding key informant interviews were perceived as useful for less-experienced investigators. Discussion: Wide adoption may be challenging due to differences in DSI standards, practices, costs, data privacy and security, and system integration needs. However, technological tools that support consistent and complete DSIs could strengthen the information needed to accurately identify overdose suicides.

Cinematic Sound Scene Description and Rendering Control

2015 ◽  
Vol 124 (8) ◽  
pp. 47-53
Author(s):  
Charles Q. Robinson ◽  
Nicolas Tsingos
Keyword(s):  
Scene Description

Embodied scene description

2021 ◽  
Author(s):  
Sinan Tan ◽  
Di Guo ◽  
Huaping Liu ◽  
Xinyu Zhang ◽  
Fuchun Sun
Keyword(s):  
Scene Description

scholarly journals Meaning Guides Attention during Real-World Scene Description

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
John M. Henderson ◽  
Taylor R. Hayes ◽  
Gwendolyn Rehrig ◽  
Fernanda Ferreira
Keyword(s):  
Real World ◽  
Scene Description

scholarly journals High performance radar images modelling and recognition of real objects

2019 ◽  
pp. 549-552
Author(s):  
D A Zherdev ◽  
V V Prokudin
Keyword(s):  
Parallel Algorithm ◽  
High Performance ◽  
3D Models ◽  
Parallel Program ◽  
Antenna Aperture ◽  
Radar Images ◽  
Scene Description ◽  
Real Objects

In the work there is a modernization of the parallel algorithm for the radar images formation of 3D models with the synthesis of the antenna aperture. In the formation of the scene description, the various structures are used in which it is possible to use more efficient and derived calculations. In addition, it is the topical task to recognize objects on radar images. Thus, on the basis of the implemented parallel program for modelling, the high performance required for simulating multiple radar images can be achieved.

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