<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[realitycss的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/realitycss</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; realitycss]]></copyright><item><title><![CDATA[关于子类中初始化父类成员属性那些事]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/120254953</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/120254953</guid><author>realitycss</author><pubDate>Sun, 12 Sep 2021 19:59:39 +0800</pubDate><description><![CDATA[初始化列表调用子类构造函数_grace_fang的博客-优快云博客_子类构造函数初始化列表

1.在子类初始化列表中调用父类的构造函数去初始化。

2.还可以有第三种那种初始化方式，相当于不再使用父类构造函数，而是用一个父类对象作为参数，直接去初始化父类成员属性

 POI2D::POI2D(int x, int y) :Point2D(x, y) {
  clean();
 }

 POI2D::POI2D(float x, float y) : Point2D(x, y)...]]></description><category></category></item><item><title><![CDATA[printf使用%x占位符打印signed char结果占4个字节？打印unsigned char结果占1个字节？]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/120186451</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/120186451</guid><author>realitycss</author><pubDate>Wed, 08 Sep 2021 18:48:45 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/sinat_29174099/article/details/114583946
]]></description><category></category></item><item><title><![CDATA[双线性插值]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/117473758</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/117473758</guid><author>realitycss</author><pubDate>Wed, 02 Jun 2021 16:41:32 +0800</pubDate><description><![CDATA[理论知识参考：https://blog.youkuaiyun.com/huang1024rui/article/details/46545329

程序：这个程序于我参考的文章的程序差不多，不一样的地方在于边界处理，



上边链接里采用方法1，扩成256*256，我的是方法2，扩成257*257




%%%%%双线性插值
clc
clear
%function [image1] = Bilinear_(image,x,y)
I=imread('E:\科研专用\散斑图平移\Image00.bmp');
[I...]]></description><category></category></item><item><title><![CDATA[2021-05-16]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116900026</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116900026</guid><author>realitycss</author><pubDate>Sun, 16 May 2021 19:07:35 +0800</pubDate><description><![CDATA[pytorchAPI使用

1.nn.Module

1._init_

2.forward完成一次向前计算的过程

1.nn.Linear为torch预定义好的线性模型，也被称为全连接层，是不算（batch_size的列数）实例化：self.linear=nn.Linear(输入的特征数量，输出的特征数量)

2.nn.Module定义了_call_方法，实现的就是调用forward方法，即Lr的实例，能够直接被传入参数调用，实际上调用的是forward方法并传入参数

linear类中也有_init_方]]></description><category></category></item><item><title><![CDATA[torch使用]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116865008</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116865008</guid><author>realitycss</author><pubDate>Sat, 15 May 2021 22:10:35 +0800</pubDate><description><![CDATA[1.张量的创建方法

torch.tensor(list)

torch.empty()/zeros()/ones()

torch.rand()/randint()/randn()

2.张量的属性和方法

数据中只有一个元素的时候 tensor.item()

转化为numpy数组tensor.numpy()

获取形状tensor.size()  获取第一个维度的形状 tensor.size(1)

形状的变化 tensor.view([shape])

获取维度tensor.dim()...]]></description><category></category></item><item><title><![CDATA[GPU中的tensor的使用]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116864573</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116864573</guid><author>realitycss</author><pubDate>Sat, 15 May 2021 21:57:13 +0800</pubDate><description><![CDATA[GPU中的tensor的使用

1.实例化device:torch.device("cuda:0" if torch.cuda.is_avaiable() else "cpu")

2.tensor.to(device) #把tensor转化为CUDA支持的tensor，或者cpu支持的tensor
]]></description><category></category></item><item><title><![CDATA[torch.Tensor与torch.tensor区别]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116857786</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116857786</guid><author>realitycss</author><pubDate>Sat, 15 May 2021 17:59:47 +0800</pubDate><description><![CDATA[1.torch.Tensor

默认的数据类型是torch.float32

torch.Tensor传入是数据时，表示的是形状， 就相当于是torch.FloatTensor的别名

torch.Tensor传入可迭代对象表示数据

2.torch.tensor

torch.tensor为创建tensor的方法


...]]></description><category></category></item><item><title><![CDATA[pytorch计算反向传播的函数介绍]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116855385</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116855385</guid><author>realitycss</author><pubDate>Sat, 15 May 2021 17:56:44 +0800</pubDate><description><![CDATA[1.tensor(data,requires_grad=True)

该tensor后续会被计算梯度，tensor所有的操作都会被记录在grad_fn

2.with torch.no_grad():

其中的操作并不会被追踪

3.反向传播

output.backward()

4.获取梯度:x.grad,累加梯度

所以，每次反向传播之前需要先把梯度置为0

5.tensor.data:

在tensor的required_grad=False,tensor.data和tensor等价

requir]]></description><category></category></item><item><title><![CDATA[利用命令提示符查看自己电脑的物理CPU数，CPU核心数，CPU线程数]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116805889</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116805889</guid><author>realitycss</author><pubDate>Fri, 14 May 2021 21:04:16 +0800</pubDate><description><![CDATA[Name：表示物理CPU数
NumberOfCores：表示CPU核心数
NumberOfLogicalProcessors：表示CPU线程数
注释：VM虚拟机中的CPU选择的核心数实际是代表线程数。


]]></description><category></category></item><item><title><![CDATA[matlab中uint与double不同]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116208608</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116208608</guid><author>realitycss</author><pubDate>Tue, 27 Apr 2021 19:49:31 +0800</pubDate><description><![CDATA[https://www.pianshen.com/article/1006326703/
]]></description><category></category></item><item><title><![CDATA[Ubuntu中E: 无法获得锁 /var/lib/dpkg/lock - open (11: 资源暂时不可用) E: 无法锁定管理目录(/var/lib/dpkg/)，是否有其他进程正占用它？]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116104186</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116104186</guid><author>realitycss</author><pubDate>Sat, 24 Apr 2021 20:36:17 +0800</pubDate><description><![CDATA[sudo rm /var/cache/apt/archives/lock
	
	
	
	sudo rm /var/lib/dpkg/lock
	
]]></description><category></category></item><item><title><![CDATA[ubuntu18.04 中ROS安装]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116095452</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116095452</guid><author>realitycss</author><pubDate>Sat, 24 Apr 2021 20:01:28 +0800</pubDate><description><![CDATA[遇到问题重要参考：https://www.jianshu.com/p/a2a9103501c8

新学了安装sudo apt-get install vim-gtk   以及在vim中显示行号 set nu

超时问题解决办法：https://blog.youkuaiyun.com/leida_wt/article/details/115120940?utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromMach...]]></description><category></category></item><item><title><![CDATA[ubuntu中sudo: apt-get:找不到命令]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/116090615</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/116090615</guid><author>realitycss</author><pubDate>Sat, 24 Apr 2021 14:33:53 +0800</pubDate><description><![CDATA[我的问题是由于安装了aptitude，好像会自动把apt删掉

所以第一步，下载mirrors.163.com/ubuntu/pool/main/a/apt/，最新的不一定号，可能ubuntu本身的动态链接库不满足

第二步见下图


]]></description><category></category></item><item><title><![CDATA[VMware虚拟机ubuntu显示屏幕太小解决办法]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115916880</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115916880</guid><author>realitycss</author><pubDate>Tue, 20 Apr 2021 19:36:27 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/dcrmg/article/details/74090307
]]></description><category></category></item><item><title><![CDATA[ubuntu18.04中更换源]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115872669</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115872669</guid><author>realitycss</author><pubDate>Mon, 19 Apr 2021 19:47:09 +0800</pubDate><description><![CDATA[安装很多软件时提示 unable to locate package

手动更换了阿里的软件源就顺畅了，速度也很快。

方法：

备份原文件

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

使用gedit打开，vi操作不太习惯

sudo geditsudo cp /etc/apt/sources.list

全删掉，将下列内容复制进去，保存退出

deb http://mirrors.aliyun.com/ubuntu/ trusty .]]></description><category></category></item><item><title><![CDATA[ubuntu18.04中安装pcl点云库]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115872505</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115872505</guid><author>realitycss</author><pubDate>Mon, 19 Apr 2021 19:43:49 +0800</pubDate><description><![CDATA[1.安装依赖


sudo apt-get update  
sudo apt-get install git build-essential linux-libc-dev
sudo apt-get install cmake cmake-gui
sudo apt-get install libusb-1.0-0-dev libusb-dev libudev-dev
sudo apt-get install mpi-default-dev openmpi-bin openmpi-common 
sud...]]></description><category></category></item><item><title><![CDATA[在linux中遇到The following packages have unmet dependencies:]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115768544</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115768544</guid><author>realitycss</author><pubDate>Fri, 16 Apr 2021 17:39:33 +0800</pubDate><description><![CDATA[怎么办？

sudo apt-get install aptitude

sudo aptitude install libglew-dev

遇到第一个n

第二个y
]]></description><category></category></item><item><title><![CDATA[三维图形绘制]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115554524</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115554524</guid><author>realitycss</author><pubDate>Fri, 09 Apr 2021 16:55:42 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[其他二维曲线图]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115554054</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115554054</guid><author>realitycss</author><pubDate>Fri, 09 Apr 2021 16:52:19 +0800</pubDate><description><![CDATA[1.对数坐标图





2.极坐标图





3.统计图

条形类图形






































]]></description><category></category></item><item><title><![CDATA[matlab绘制图形中图像标注]]></title><link>https://blog.youkuaiyun.com/realitycss/article/details/115550323</link><guid>https://blog.youkuaiyun.com/realitycss/article/details/115550323</guid><author>realitycss</author><pubDate>Fri, 09 Apr 2021 15:50:21 +0800</pubDate><description><![CDATA[1.title函数













2.xlabel函数和ylabel函数



3.gtext函数跟随光标移动放置



4.legend函数



5.坐标控制函数axis







给坐标轴加网格线grid函数







图形保持hold on





subplot函数，每一次都重新刷新分区






...]]></description><category></category></item></channel></rss>