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LEVIR-CD

LEVIR-CD is a new large-scale remote sensing binary change detection dataset, which would help develop novel deep learning-based algorithms for remote sensing image change detection.

Overview of LEVIR-CD

LEVIR-CD is a new large-scale remote sensing building Change Detection dataset. The introduced dataset would be a new benchmark for evaluating change detection (CD) algorithms, especially those based on deep learning.

LEVIR-CD consists of 637 very high-resolution (VHR, 0.5m/pixel) Google Earth (GE) image patch pairs with a size of 1024 × 1024 pixels. These bitemporal images with time span of 5 to 14 years have significant land-use changes, especially the construction growth. LEVIR-CD covers various types of buildings, such as villa residences, tall apartments, small garages and large warehouses. Here, we focus on building-related changes, including the building growth (the change from soil/grass/hardened ground 提供外汇交易商Binary简介 or building under construction to new build-up regions) and the building decline. These bitemporal images are annotated by remote sensing image interpretation experts using binary labels (1 for change and 0 for unchanged). Each sample in our dataset is annotated by one annotator and then double-checked by another to produce high-quality annotations. The fully annotated LEVIR-CD contains a total of 31,333 individual change building instances.

Geospatial Distribution of LEVIR-CD

The bitemporal images in LEVIR-CD are from 20 different regions that sit in several cities in Texas of the US, including Austin, Lakeway, Bee Cave, Buda, Kyle, Manor, Pflugervilletx, Dripping Springs, etc. The Figure below illustrates the geospatial distribution of our new dataset and an enlarged image patch. The captured time of our image data varies from 2002 to 2018. Images in different regions may be taken at different times. We want to introduce variations due to seasonal 提供外汇交易商Binary简介 changes and illumination changes into our new dataset, which could help develop effective methods that can mitigate the impact of irrelevant changes on real changes.

samples

Examples of annotated samples

Samples size of 1024 × 1024

samples

Cropped samples size of 256 × 256

cropped_examples

Usage

The use of the images from Google Earth must respect 提供外汇交易商Binary简介 the Google Earth terms of use. All images and annotations in LEVIR-CD can only be used 提供外汇交易商Binary简介 for academic purposes, but are prohibited for any commercial use.

About

We are from LEVIR, which is the abbreviation of ours’ laboratory: LEarning, VIsion and Remote sensing laboratory. Visit the lab homepage for more details.

If you have any the problem or feedback in using LEVIR-CD, please contact

district10/cmake-templates

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README.md

Some CMake Templates.

Conventions

Use CMake-GUI to generate Visual Studio 2010 project, then use Visual Studio to compile & run.

Most commonly, we build Makefile project:

Simple C project.

cmake_minimum_required( . ) is needed in root CMakeLists.txt, always.

The $ is variable with value C , which is set by the project( C ) .

Simple C++ project.

I recommend Visual Studio 2015 Community Edition.

3.4. Example to Show How to 提供外汇交易商Binary简介 Modualize Your Project

3.5. Example with Support of Boost

Ubuntu install: sudo apt-get install libboost-all-dev .

3.6. Example with Support of OpenCV

Want to how to configure both opencv 2 & 3 on your system? Checkout my tutorial: HOWTO: OpenCV 2 & OpenCV 3 · Issue #4 · district10/cmake-templates.

opencv 2 提供外汇交易商Binary简介 or less

    : for opencv2 or less (VS2010 😄 , Linux ❓ ) : for opencv3 (VS2010 ❓ , Linux 😄 )

3.7. Example with Support of Qt4

Be sure to make qmake caught by CMake, put it in your $PATH .

Works like qmake -project , one ring to rule them all:

    (VS2010 😄 , Linux 提供外汇交易商Binary简介 😄 ) (check out the configs.h.in file) (VS2010 😄 , Linux 😄 ) , works like qmake -project && qmake && make on Linux (VS2010 😄 , Linux 😄 )

3.8. Example with Support of Qt5

3.9. Get'em Together (advanced examples)

This part is called CMake in Action.

    • a great cmake wrapper for lua, a great c++ wrapper for lua
    • I forked it, and annotated (in chinese), it's really great! My fork: 4ker/luapp: Using lua in C++ style. Build system is CMake..
    • Libs
      • google test (gmock), for testing and benchmarking, etc
      • cppformat, the missing string formating lib
      • More documentation
      • More elegant & illustrative examples
      • Planned Examples
        • for Windows, link *.lib files
        • for Linux, link *.a , *.so files, set rpath
        • etc.

        5. Snippets & Helper Functions

        There are some utility functions in utilities.cmake , use include(utilities.cmake) to include, then use

        • print_include_directories() to print all included directories,
        • print_all_linked_libraries(your_exe_or_lib) to print all linked libs,
        • print_all_variables() to print all variables

        Tip, use cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=YES .. to generate compile commands (a json file).

        IDA Python 7.5 python函数入门

        IDAPython是很强大的功能. 但是在7.5支持python3之后很多函数都改变了. 所以从头开始学一下.

        要学习IDA Python 首先你要会python的基本操作. 以及IDAPython文档会查询. IDC 文档会查询. 以及差异化查询.

        python3 入门知识: 菜鸟教程Python3入门知识

        IDAPython官方函数文档: IDAPython官方文档函数查询

        IDC函数官方文档查询: IDC函数

        IDA版本与版本之间的差异化函数查询: IDA版本函数差异化

        一丶IDApython分布讲解

        1.1 IDA Python 常见模块介绍与脚本使用

        第一种 .可以直接按 shift + F2 快捷键调出界面.也可以直接在菜单中选择命令脚本.

        请更改为python来使用IDA python.当然如果拟更改为IDC 那么你只能使用IDC函数了.

        PS: 如果没有python选项 参考一下网上怎么修复python支持.

        1.2 IDAPython 汇编界面介绍

        .text 这是程序的段名称
        0x004010B7 这是当前的Addr地址
        movups 这个汇编是当前的汇编语句操作符
        movups xmmword ptr[xxx] ,xmm0 这个是汇编指令的操作数
        movups xmmword . xmm0 这一整行是反汇编语句

        1.3 IDA中获取界面中地址函数

        在IDA 7.5中. 我们获取地址的函数如下

        当前地址获取使用 idc.here() 函数 或者 idc.get_screen_ea() 函数

        最小地址可以使用: ida_ida.inf_get_min_ea()

        最大地址可以使用: ida_ida.inf_get_max_ea()

        当前选择地址的开始: idc.read_selection_start()

        当前选择地址的结束:idc.read_selection_end()

        如果判断地址是否存在可以使用: idaapi.BADADDR

        下面则使用表格来说一下上述函数的老版函数. 便于查询. 如果你使用的是7.0 那么可以使用老版函数. 没有特殊说明的说明没有新函数.可以直接使用.

        1.4 IDAPython中的数值获取

        函数 说明
        Byte(addr) 以字节为单位获取地址处的值
        Word(addr) 同上. 以2字节(字)的单位获取
        Dword(addr) 4字节
        Qword(addr) 8字节

        但是在IDA 7.5 支持python3之后这些函数都变了.

        旧的函数 新的函数
        Byte(addr) idc.get_wide_byte(addr)
        Word(addr) idc.get_wide_word(addr)
        Dword(addr) idc.get_wide_dword(addr)
        Qword(addr) idc.get_qword(addr)

        当然与之对应的还有其判断函数
        idc.isByte() Word Dwrd Qwrd
        但在高版本中都变成了
        ida_bytes.is_byte word dword qword
        上面的word dword qword 都省略了前边的字段.使用的时候自己加上即可.
        指令实战如下:

        1.5 IDAPython中的数值操作.

        指令 说明
        idc.PatchByte(addr,value) 修改addr地址的值为value.每次修改一个字节
        idc.PatchWord(addr,value) 同上一次修改变为2个字节
        idc.PatchDword(addr,value) 4
        idc.PatchQword(addr,value) 8

        这些指令在IDA7.5中统统不使用了. 统统移植到 ida_bytes里面了

        提供外汇交易商Binary简介
        旧函数 新函数
        idc.PatchByte(addr,value) ida_bytes.patch_byte(addr,value)
        idc.PatchWord(addr,提供外汇交易商Binary简介 value) ida_bytes.patch_word(addr,value)
        idc.PatchDword(addr,value) ida_bytes.patch_Dword(addr,提供外汇交易商Binary简介 value)
        idc.PatchQword(addr,value) ida_bytes.patch_Qword(addr,value)

        二丶IDAPython实战

        ​ 通过上面我们介绍的一些IDA Python的操作. 你现在能进行简单的脚本制作了.

        如遇到 简单的花指令 我们可以手动写脚本去除. 现在我们写一个脚本. 脚本的作用是

        获取我们选择区域的所有二进制值. 如果二进制数值是0x66 那么我们就替换成 0x90 (nop)

        首先选择这一块内容 (0x004015D1 - 0X0040166B)

        坚持两字,简单,轻便,但是真正的执行起来确实需要很长很长时间.当你把坚持两字当做你要走的路,那么你总会成功. 想学习,有问题请加群.群号:725864912(收费)群名称: 逆向学习小分队 群里有大量学习资源. 以及定期直播答疑.有一个良好的学习氛围. 涉及到外挂反外挂病毒 司法取证加解密 驱动过保护 VT 等技术,期待你的进入。

        QQ群

        欢迎大家关注我的微信公众号.不定期的更新文章.更新技术. 关注公众号后请大家养成 不白嫖的习惯.欢迎大家赞赏. 也希望在看完公众号文章之后 不忘 点击 收藏 转发 以及点击在看功能. QQ群:

        district10/cmake-templates

        This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.

        Use Git or checkout with SVN using the web URL.

        Work fast with our official CLI. Learn more.

        Launching GitHub Desktop

        If nothing happens, download GitHub Desktop and try again.

        Launching GitHub Desktop

        If nothing happens, download GitHub Desktop and try again.

        Launching Xcode

        If nothing 提供外汇交易商Binary简介 happens, download Xcode and try again.

        Launching Visual Studio Code

        Your codespace will open once ready.

        There was a problem preparing your codespace, please try again.

        Latest commit

        Git stats

        Files

        Failed to load latest commit information.

        README.md

        Some CMake Templates.

        Conventions

        Use CMake-GUI to generate Visual Studio 2010 project, then use Visual Studio to compile & run.

        Most commonly, we build Makefile project:

        Simple C project.

        cmake_minimum_required( . ) is needed 提供外汇交易商Binary简介 in root CMakeLists.txt, always.

        The $ is variable with value C , which is set by the project( C ) .

        Simple C++ project.

        I recommend Visual Studio 2015 Community Edition.

        3.4. Example to Show How to Modualize Your Project

        3.5. Example with Support of Boost

        Ubuntu install: sudo apt-get install libboost-all-dev .

        3.6. Example with Support of OpenCV

        Want to how to configure both opencv 2 & 3 on your system? Checkout my tutorial: HOWTO: OpenCV 2 & OpenCV 3 · Issue #4 · district10/cmake-templates.

        opencv 2 or less

          : for opencv2 or less (VS2010 😄 , Linux ❓ ) : for opencv3 (VS2010 ❓ , Linux 😄 )

        3.7. Example with Support of Qt4

        Be sure to make qmake caught by CMake, put it in your $PATH .

        Works like qmake -project , one ring to rule them all:

          (VS2010 😄 , Linux 😄 ) (check out the configs.h.in file) (VS2010 😄 , Linux 😄 ) , works like qmake -project && qmake && make on Linux (VS2010 😄 , Linux 😄 )

        3.8. Example with Support of Qt5

        3.9. Get'em Together (advanced examples)

        This part is called CMake in 提供外汇交易商Binary简介 Action.

          • a great cmake wrapper for lua, a great c++ wrapper for lua
          • I forked it, and annotated (in chinese), it's really great! My fork: 4ker/luapp: Using lua in C++ style. Build 提供外汇交易商Binary简介 system is CMake..
          • Libs
            • google test (gmock), for testing and benchmarking, etc
            • cppformat, the missing string formating lib
            • More documentation
            • More elegant & illustrative examples
            • Planned Examples
              • for Windows, link *.lib files
              • for Linux, link *.a , *.so files, set rpath
              • etc.

              5. Snippets & Helper Functions

              There are some utility functions in utilities.cmake , use include(utilities.cmake) to 提供外汇交易商Binary简介 提供外汇交易商Binary简介 include, then use

              • print_include_directories() to print all included directories,
              • print_all_linked_libraries(your_exe_or_lib) to print all linked libs,
              • print_all_variables() to print all variables

              Tip, use cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=YES .. to generate compile commands (a json file).