中国科学院机构知识库网格系统: 检索

Identity of the holotype and type locality of Rhabdophis leonardi (Wall, 1923) (Colubridae: Natricinae), with notes on the morphology and natural history of the species in southwestern China 期刊论文 OAI收割
ECOLOGY AND EVOLUTION, 2023, 卷号: 13, 期号: 5, 页码: 18
作者: Yang, Shi-Jun; Savitzky, Alan H.; Gower, David J.; Deepak, V.; Mori, Akira

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收藏 | 浏览/下载：14/0 | 提交时间：2023/10/25

distribution morphology Natricidae Sinlum Kaba snakes systematics

Early Pliocene fossil snakes (Squamata, Colubroidea) with various teeth from the fissure deposit from Queshan, Henan, China 期刊论文 OAI收割
HISTORICAL BIOLOGY, 2023, 页码: 22
作者: Shi, Jingsong; Wang, Yuan; Messenger, Kevin Robert; Jiangzuo, Qigao; Chen, Yu

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收藏 | 浏览/下载：32/0 | 提交时间：2023/02/14

bladed-toothed snakes dentary maxilla osteology snake fossil running title the snake fauna from Queshan Henan

Early Pliocene fossil snakes (Squamata, Colubroidea) with various teeth from the fissure deposit from Queshan, Henan, China 期刊论文 OAI收割
HISTORICAL BIOLOGY, 2023, 页码: 22
作者: Shi, Jingsong; Wang, Yuan; Messenger, Kevin Robert; Jiangzuo, Qigao; Chen, Yu

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收藏 | 浏览/下载：27/0 | 提交时间：2023/03/15

bladed-toothed snakes dentary maxilla osteology snake fossil running title the snake fauna from Queshan Henan

Comparative genomic investigation of high-elevation adaptation in ectothermic snakes 期刊论文 OAI收割
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 卷号: 115, 期号: 33, 页码: 8406-8411
作者: Li, Jia-Tang; Gao, Yue-Dong; Xie, Liang; Deng, Cao; Shi, Peng

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收藏 | 浏览/下载：156/0 | 提交时间：2020/12/24

snakes de novo genome comparative genomics positive selection high-elevation adaptation

Multiple independent structural dynamic events in the evolution of snake mitochondrial genomes 期刊论文 OAI收割
BMC Genomics, 2018, 期号: 19, 页码: 354
作者: Tao Pan; Shanqun Jiang; Dingqi Rao; Lifu Qian; Baowei Zhang

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收藏 | 浏览/下载：21/0 | 提交时间：2018/09/26

Mitochondrial Genome Gene Rearrangement Hotspots Duplicate Control Regions Snakes

Comparative genomic investigation of high-elevation adaptation in ectothermic snakes 期刊论文 OAI收割
PNAS, 2018, 卷号: 115, 期号: 33, 页码: 8406–8411
作者: Meng-Long Guan; Jia-Tang Li; Yue-Dong Gao; Liang Xie; Cao Deng

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收藏 | 浏览/下载：51/0 | 提交时间：2018/09/25

Snakes De Novo Genome Comparative Genomics Positive Selection High-elevation Adaptation

Nest Defense by a White-rumped Shama (Copsychus malabaricus) Against Snakes 期刊论文 OAI收割
WILSON JOURNAL OF ORNITHOLOGY, 2015, 卷号: 127, 期号: 3, 页码: 538-542
作者: Quan, Rui-Chang

收藏 | 浏览/下载：21/0 | 提交时间：2015/11/19

birds nest defense nest predator snakes

基于视觉测量的异形孔轮廓测量系统研究 学位论文 OAI收割
硕士, 北京: 中国科学院研究生院, 2012
朱辉

收藏 | 浏览/下载：32/0 | 提交时间：2012/07/09

视觉测量轮廓精度 Matlab仿真 Snakes模型近似曲率

改进GVF的自动Snakes模型 期刊论文 OAI收割
中国图象图形学报, 2012, 期号: 2, 页码: 256-262
周亚男; 程熙; 骆剑承; 沈占锋; 胡晓东

收藏 | 浏览/下载：31/0 | 提交时间：2015/01/05

梯度向量场 Snakes模型 SUSAN算法边缘检测迭代变形算法

High-accuracy real-time automatic thresholding for centroid tracker (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Zhang Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Many of the video image trackers today use the centroid as the tracking point. In engineering we can get several key pairs of peaks which can include the target and the background around it and use the method of Otsu to get intensity thresholds from them. According to the thresholds it give a great help for us to get a glancing size a target's centroid is computed from a binary image to reduce the processing time. Hence thresholding of gray level image to binary image is a decisive step in centroid tracking. How to choose the feat thresholds in clutter is still an intractability problem unsolved today. This paper introduces a high-accuracy real-time automatic thresholding method for centroid tracker. It works well for variety types of target tracking in clutter. The core of this method is to get the entire information contained in the histogram we can gain the binary image and get the centroid from it. To track the target so that we can compare the size of the object in the current frame with the former. If the change is little such as the number of the peaks the paper also suggests subjoining an eyeshot-window we consider the object has been tracked well. Otherwise their height just like our eyes focus on a target if the change is bigger than usual position and other properties in the histogram. Combine with this histogram analysis we will not miss it unless it is out of our eyeshot we should analyze the inflection in the histogram to find out what happened to the object. In general the impression will help us to extract the target in clutter and track it and we will wait its emergence since it has been covered. To obtain the impression what we have to do is turning the analysis into codes for the tracker to determine a feat threshold. The paper will show the steps in detail. The paper also discusses the hardware architecture which can meet the speed requirement. the paper offers a idea comes from the method of Snakes