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雉鸡亚种种群的图像识别研究

open access: yes野生动物学报, 2021
雉鸡的亚种众多,在其表型与遗传上具有地理变异。雉鸡的一些亚种适应于不同的地理条件(例如:寒带、热带、干旱区、高原)形成了独特的群体形态特征,尤其体现在雄性个体的羽色图案上。羽色图案的复杂性给雉鸡亚种的人工鉴定带来了挑战,为此,本研究探索应用图像识别技术对雉鸡亚种进行识别。对3种识别算法:K近邻分类算法,概率神经网路和符号分类器进行了比较。通过序列前向选择法、序列后向选择法、序列浮动前向选择法和序列浮动后向选择法等算法对差异纹理特征进行提取和比较。本研究对25个雉鸡亚种的高质量博物馆标本的图片进行分析验证。
王彪 王筠 屈军乐
doaj   +1 more source

Automatic identification of mineral in petrographic thin sections based on images using a deep learning method(基于深度学习的岩石薄片矿物自动识别方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2022
岩石薄片矿物识别是岩石学研究工作的基础,亦是进一步认识岩石种类、成因机理、物质运移和演化历史的基础。传统的矿物识别主要依靠光学显微镜进行人工鉴定,经济成本和时间成本较高、效率较低,且受制于专家个人经验与主观判断。随着深度学习技术的发展,计算机能从图像中自动提取更准确的语义信息,从而为岩石薄片图像的智能分析提供有效途径。提出了一种基于深度学习的岩石薄片矿物自动识别方法,利用深度卷积神经网络自动提取岩石薄片图像中不同矿物的有效特征,并对其进行语义分割与识别 ...
XUShengjia(徐圣嘉)   +3 more
doaj   +1 more source

Fossil image identification using deep learning ensembles of data augmented multiviews

open access: yesMethods in Ecology and Evolution, Volume 14, Issue 12, Page 3020-3034, December 2023., 2023
Abstract Identification of fossil species is crucial to evolutionary studies. Recent advances from deep learning have shown promising prospects in fossil image identification. However, the quantity and quality of labelled fossil images are often limited due to fossil preservation, conditioned sampling and expensive and inconsistent label annotation by ...
Chengbin Hou   +6 more
wiley   +1 more source

Fragmentation effects on an endangered species across a gradient from the interior to edge of its range

open access: yesConservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract Understanding how habitat fragmentation affects individual species is complicated by challenges associated with quantifying species‐specific habitat and spatial variability in fragmentation effects within a species’ range. We aggregated a 29‐year breeding survey data set for the endangered marbled murrelet (Brachyramphus marmoratus) from >42 ...
Jonathon J. Valente   +7 more
wiley   +1 more source

Conserving urban tropical biodiversity by connecting networks of green patches 连通绿地斑块, 保护热带城市生物多样性 Memulihara biodiversiti tropika bandar dengan menghubungkan rangkaian tompok kawasan hijau

open access: yesIntegrative Conservation, Volume 2, Issue 2, Page 80-94, June 2023., 2023
The objective of this study is to characterise ecological connectivity for mammals and identify important patches and linkages for connecting urban green spaces for Greater Kuala Lumpur, Malaysia. Our results demonstrate the potential for Southeast Asian megacities to support biodiversity in the urban context, and the potential for a different kind of ...
Jennifer Danneck   +6 more
wiley   +1 more source

Nailfold capillaroscopy and deep learning in diabetes 甲襞毛细血管镜检测与深度学习在糖尿病中的应用

open access: yesJournal of Diabetes, Volume 15, Issue 2, Page 145-151, February 2023., 2023
Highlights Nailfold capillary images were obtained by performing nailfold video capillaroscopy in 120 adult patients with and without diabetes. Over 5000 photographs were analyzed using machine‐learning approaches, and these models were clearly able to distinguish people based on diabetes status.
Reema Shah   +6 more
wiley   +1 more source

How to address data privacy concerns when using social media data in conservation science

open access: yesConservation Biology, Volume 35, Issue 2, Page 437-446, April 2021., 2021
Abstract Social media data are being increasingly used in conservation science to study human–nature interactions. User‐generated content, such as images, video, text, and audio, and the associated metadata can be used to assess such interactions. A number of social media platforms provide free access to user‐generated social media content.
Enrico Di Minin   +4 more
wiley   +1 more source

基于轮廓匹配度的隔离开关三相分合闸状态同步识别算法研究

open access: yesGaoya dianqi, 2022
采用图像识别的方法进行隔离开关分合闸状态识别已有了部分工程应用,图像识别算法多是按照一幅图像识别一相触头配置的,工程中摄像头配置数量较多,且识别算法容易受周围环境影响。文中提出了一种基于轮廓匹配度的隔离开关三相分合闸状态同步识别算法,通过差分算法与OTSU二值化算法相结合的方法从一幅图像同步提取一组隔离开关的三相触头轮廓,计算轮廓匹配度,实现三相触头分合闸状态的同步定量识别。通过一组敞开式隔离开关三相标准的合闸过程视频对轮廓匹配度算法进行了验证,确定可以通过该算法能够实现三相触头分合闸状态的定量同步识别。
宋亚凯   +5 more
doaj  

基于NSST图像融合的变电站开关状态识别

open access: yesGaoya dianqi, 2021
针对变电站中开关状态图像识别易发生误判的问题,提出了一种基于非下采样剪切波变换(NSST)图像融合的变电站开关图像识别方法。该方法采用可见光和红外光双摄像模式,得到开关可见光图像和红外图像,根据两者的特点与互补特性,采用基于NSST的图像融合算法对可见光图像和红外图像进行融合,生成含有两种开关图像丰富细节信息和特征量的融合图像,采用改进加速稳健特征(SURF)算法对融合图像进行目标特征量提取和匹配,再采用基于混沌布谷鸟(CCS)算法的多阈值图像分割技术进行处理 ...
周凯   +6 more
doaj  

Registered Nurses' experiences of using a clinical decision support system for triage of emergency calls: A qualitative interview study 注册护士使用临床决策支持系统进行紧急呼叫分类的经验:定性的访谈研究

open access: yesJournal of Advanced Nursing, Volume 76, Issue 11, Page 3104-3112, November 2020., 2020
Abstract Objectives To describe how Registered Nurses make use of a Clinical Decision Support System to triage calls to emergency medical dispatch centres, from the perspective of professional autonomy. Design The study had a descriptive design with a qualitative inductive approach.
Inger K. Holmström   +4 more
wiley   +1 more source

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