Results 41 to 50 of about 1,732,484 (345)

Description of shape patterns using circular arcs for object detection

open access: yesIET Computer Vision, 2013
The authors propose a novel object detection algorithm based on shape matching using a single sketch of an object. The proposed algorithm uses circular arc segments to describe image edges; this approach is advantageous for shape description, shape ...
Wonil Chang, Soo‐Young Lee
doaj   +1 more source

Histogram Shape-Based Scene-Change Detection Algorithm

open access: yesIEEE Access, 2019
This paper proposes histogram shape-based scene-change detection to automatically recognize the changing content in a moving image for frame rate up-conversion; in the frame rate up-conversion, it is important to detect both local and global scene ...
Sung In Cho, Suk-Ju Kang
doaj   +1 more source

Building Change Detection Using a Shape Context Similarity Model for LiDAR Data

open access: yesISPRS International Journal of Geo-Information, 2020
In this paper, a novel building change detection approach is proposed using statistical region merging (SRM) and a shape context similarity model for Light Detection and Ranging (LiDAR) data.
Xuzhe Lyu, Ming Hao, Wenzhong Shi
doaj   +1 more source

Increasing Shape Bias to Improve the Precision of Center Pivot Irrigation System Detection

open access: yesRemote Sensing, 2021
Irrigation is indispensable in agriculture. Center pivot irrigation systems are popular means of irrigation since they are water-efficient and labor-saving.
Jiwen Tang   +3 more
doaj   +1 more source

Facial Landmark Detection: a Literature Survey

open access: yes, 2018
The locations of the fiducial facial landmark points around facial components and facial contour capture the rigid and non-rigid facial deformations due to head movements and facial expressions. They are hence important for various facial analysis tasks.
Ji, Qiang, Wu, Yue
core   +1 more source

Clinical Insights Into Hypercalcemia of Malignancy in Childhood

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley   +1 more source

Assessing Geometry Perception of Direct Time-of-Flight Sensors for Robotic Safety

open access: yesSensors
Time-of-flight sensors have emerged as a viable solution for real-time distance sensing in robotic safety applications due to their compact size, fast response, and contactless operation. This study addresses one of the key challenges with time-of-flight
Jakob Gimpelj, Marko Munih
doaj   +1 more source

Surface Shape Detection with a Single Far-Field Intensity by Combined Amplitude and Phase Retrieval

open access: yesInternational Journal of Antennas and Propagation, 2019
The efficiency of a reflector antenna highly depends on its surface shape. In order to ensure a good convergence, the conventional phase retrieval based shape detection schemes require that several far-field intensities be scanned, focused, or defocused.
Huiliang Jin   +5 more
doaj   +1 more source

KeyShip: Towards High-Precision Oriented SAR Ship Detection Using Key Points

open access: yesRemote Sensing, 2023
Synthetic Aperture Radar (SAR) is an all-weather sensing technology that has proven its effectiveness for ship detection. However, detecting ships accurately with oriented bounding boxes (OBB) on SAR images is challenging due to arbitrary ship ...
Junyao Ge   +5 more
doaj   +1 more source

Shape-Based Plagiarism Detection for Flowchart Figures in Texts

open access: yes, 2014
Plagiarism detection is well known phenomenon in the academic arena. Copying other people is considered as serious offence that needs to be checked. There are many plagiarism detection systems such as turn-it-in that has been developed to provide this ...
Afif, Fadhil Noer   +3 more
core   +1 more source

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