搜索结果: 1-15 共查到“知识库 图形图象复制技术”相关记录133条 . 查询时间(5.018 秒)
基于ＤＷＴＳＶＤ压缩量化的数字图像盲水印算法
奇异值分解（ＳＶＤ） 离散小波变换 μ律压缩 量化索引调制 盲水印 数字水印
2018/6/11
为了解决奇异值分解（ｓｉｎｇｕｌａｒｖａｌｕｅｄｅｃｏｍｐｏｓｉｔｉｏｎ，ＳＶＤ）算法提取水印时需要原始载体图像的缺陷，以及
量化索引调制（ｑｕａｎｔｉｚａｔｉｏｎｉｎｄｅｘｍｏｄｕｌａｔｉｏｎ，ＱＩＭ）均匀量化不适用于非均匀信号的问题，通过引入 μ律压缩技术，
提出一种新的基于 ＤＷＴＳＶＤ压缩量化的数字图像盲水印算法。该算法对载体图像进行分块，对每一分块实施离
散小波变换（ｄｉｓｃｒｅ...
THE PARALLEL IMPLEMENTATION OF ALGORITHMS FOR FINDING THE REFLECTION SYMMETRY OF THE BINARY IMAGES
Reflection Symmetry of Images Binary Images High-Performance Computing Parallel Performance Evaluation
2017/6/19
In this paper, we investigate the exact method of searching an axis of binary image symmetry, based on brute-force search among all potential symmetry axes. As a measure of symmetry, we use the set-th...
FOLK DANCE PATTERN RECOGNITION OVER DEPTH IMAGES ACQUIRED VIA KINECT SENSOR
Intangible Cultural Heritage Folk Dances Depth Camera Unsupervised Clustering Skeleton data
2017/4/6
The possibility of accurate recognition of folk dance patterns is investigated in this paper. System inputs are raw skeleton data, provided by a low cost sensor. In particular, data were obtained by m...
EFFECT OF PANSHARPENED IMAGE ON SOME OF PIXEL BASED AND OBJECT BASED CLASSIFICATION ACCURACY
Pan Sharpening Decision Tree Maximum Likelihood Support Vector Machine Object Based Classification Sun Flower Corn
2016/11/23
Classification is the most important method to determine type of crop contained in a region for agricultural planning. There are two types of the classification. First is pixel based and the other is ...
A REGION-BASED MULTI-SCALE APPROACH FOR OBJECT-BASED IMAGE ANALYSIS
Object Based Image Analysis Region-based scale Classification Multiresolution Segmentation Estimation of Scale Parameter (ESP)
2016/11/23
Within the last two decades, object-based image analysis (OBIA) considering objects (i.e. groups of pixels) instead of pixels has gained popularity and attracted increasing interest. The most importan...
REGION OF INTEREST DETECTION BASED ON HISTOGRAM SEGMENTATION FOR SATELLITE IMAGE
Region of interest Image segmentation Histogram segmentation Morphological Satellite image
2016/11/23
High resolution satellite imaging is considered as the outstanding applicant to extract the Earth’s surface information. Extraction of a feature of an image is very difficult due to having to find the...
Extended conceptual neighborhoods
conceptual neighborhoods topological relations visual query language GIS
2016/5/23
Based on the smooth transition model for conceptual neighborhood graphs among binary topological relations, an extended model, the movement model, is proposed. A neighborhood relation between two topo...
Object-oriented modelling for the extraction of geometry, texture and reflectance from digital images
Semi-Automatic Extraction System CORBA JavaBeans GIS CSG
2016/5/20
A semi-automatic system for extracting topographic features is being migrated to an object-oriented design for better maintainability. For that purpose an object-oriented model of the extracted object...
Automatic detection of changes in road data bases using satellite imagery
Automatic detection changes satellite imagery
2016/5/20
An automatic procedure is developed for detection of changes between an existing road database and a newly registered satellite image, rectified to an orthophoto.
Cooperative algorithms and techniques of image analysis and GIS
Integration Fusion Revision Update Image Analysis Interpretation
2016/5/20
During the past data fusion has become an important issue in remote sensing image analysis. Image analysts benefit very much from fusion products, e.g. merged optical and radar imagery, which provide ...
Image Registration of High Resolution Satellite Based on Straight Line Feature
Image Registration Feature Space Similarity Measure Search Strategy Transformation Function
2015/12/18
Aim at registration of high resolution remote sensing images，a image registration algorithm based on line feature is described in this paper. First，the lines in both images are extracted, Next a modif...
Adjustment with Sparse GCPs and the High-Resolution Satellite Imagery - for the Project of West China Topographic Mapping At 1:50, 000 Scale
Rational Function Model (RFM) High-Resolution Satellite Imagery
2015/12/18
High-resolution satellite images (HRSI) at sub-5m footprint such as IKONOS, IRS-P5 (CartoSat-1) and SPOT-5 HRG/HRS images are becoming increasingly available to the earth observation community and the...
Standardization in Photogrammetry and Remote Sensing
Calibration Global Imagery Interoperability ISO Metadata Standards
2015/12/18
The range of photogrammetric and remote sensing technology has considerably widened during the past years. In particular, many new sensors have been put into operation, which ended the dominance of a ...
OHE Object Oriented Analysis and Evaluation Method for the Natural Disaster Based on Spatial Techniques: a Pilot Study
Decision Support Systems Risk Model Image Understanding Spatial Analysis
2015/12/18
Some different techniques were adopted in disaster management and research. Difficulties appeared in operational disaster emergency response works. There is no effective scheme to integrate various me...
Development of the United States National Land Cover Database: Experience from 1992 and 2001 Implementation
Land Cover Database CART Image Analyses
2015/12/18
The Multi-Resolution Land Characteristics (MRLC) Consortium is a group formed by the U.S. federal agencies in 1990 to purchase Landsat 5 Thematic Mapper imagery for the conterminous U.S. and to develo...