<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[十年磨一剑]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/seamanj</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; seamanj]]></copyright><item><title><![CDATA[w11p 向前冲]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/149585672</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/149585672</guid><author>seamanj</author><pubDate>Wed, 23 Jul 2025 23:24:30 +0800</pubDate><description><![CDATA[W11P 向前冲]]></description><category></category></item><item><title><![CDATA[clone jetson system to an image file]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/148306964</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/148306964</guid><author>seamanj</author><pubDate>Thu, 29 May 2025 11:41:02 +0800</pubDate><description><![CDATA[connect the up-to-date jetson to your laptop via usb cableOn your laptop, go to ~/nvdia/nvidia_sdk/<Your JetPack Version>/Linux_for_Tegrasudo ./tools/jetson-disk-image-creator.sh -o <your output file.img> -b jetson-orin-nano-devkit -d SD]]></description><category></category></item><item><title><![CDATA[Tkinter layout]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/142772418</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/142772418</guid><author>seamanj</author><pubDate>Wed, 09 Oct 2024 00:26:47 +0800</pubDate><description><![CDATA[https://i-blog.csdnimg.cn/direct/baae122bedc94ad8b85fd7f408ae651c.png]]></description><category></category></item><item><title><![CDATA[windows cmd 计算文件数量]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/140530756</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/140530756</guid><author>seamanj</author><pubDate>Thu, 18 Jul 2024 19:06:35 +0800</pubDate><description><![CDATA[【代码】windows cmd 计算文件数量。]]></description><category></category></item><item><title><![CDATA[contrastive loss and triplet loss]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/140159158</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/140159158</guid><author>seamanj</author><pubDate>Wed, 03 Jul 2024 18:05:31 +0800</pubDate><description><![CDATA[而triplet loss只需要postive pair的距离 和 negtaive pair 的距离相差m以上, postive pair的距离不一定为0, 所以条件更松驰, 为网络训练更友好一点。contrastive loss 想要positive pair 的距离接近0。]]></description><category></category></item><item><title><![CDATA[将父目录设置为根目录]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/136550345</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/136550345</guid><author>seamanj</author><pubDate>Fri, 08 Mar 2024 03:10:42 +0800</pubDate><description><![CDATA[在用这个这个项目的时候https://github.com/KaiyangZhou/deep-person-reid， 出现了问题。而torchreid在父目录deep-person-reid中， 所以应该将父目录加入sys.path中。原因是根目录在当前目录。]]></description><category></category></item><item><title><![CDATA[cmake filter a folder]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134725527</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134725527</guid><author>seamanj</author><pubDate>Fri, 01 Dec 2023 06:30:43 +0800</pubDate><description><![CDATA[【代码】cmake filter a folder。]]></description><category></category></item><item><title><![CDATA[interview review]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134473675</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134473675</guid><author>seamanj</author><pubDate>Sat, 18 Nov 2023 06:37:59 +0800</pubDate><description><![CDATA[是focal length in world unites (millimeters),像素宽度, 通过胶片宽度除以像素X方向的个数得到.代替, 因为y轴变斜了, 相应也变长了。先算在y方向有多少像素, 再乘以。第二行注意如果有skew, 那么。有两种理解方式, 第一种是通过。, 然后将这个偏移通过乘以。转成x方向的像素偏移。]]></description><category></category></item><item><title><![CDATA[fundamental notes in 3D math]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134390058</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134390058</guid><author>seamanj</author><pubDate>Tue, 14 Nov 2023 04:25:16 +0800</pubDate><description><![CDATA[距离可为正, 为负, 为正表示跟法向量方向一致, 为负表示相反。, 距离为正表示点在平面法线方向指向的一侧, 反之亦然。, 点到平面的距离为。]]></description><category></category></item><item><title><![CDATA[two ways to customize unordered_set]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134341807</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134341807</guid><author>seamanj</author><pubDate>Fri, 10 Nov 2023 21:58:02 +0800</pubDate><description><![CDATA[【代码】two ways to customize unordered_set。]]></description><category></category></item><item><title><![CDATA[[cpptools] The build configurations generated do not contain the active build configuration. vscode]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134281708</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134281708</guid><author>seamanj</author><pubDate>Wed, 08 Nov 2023 09:42:24 +0800</pubDate><description><![CDATA[造成这个的原因主要是: CMAKE_BUILD_TYPE的定义与vscode里面active build preset不一致造成的。在CMakePresets.json文件中增加对CMAKE_BUILD_TYPE的定义即可。]]></description><category></category></item><item><title><![CDATA[SAD notes]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/134045343</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/134045343</guid><author>seamanj</author><pubDate>Thu, 26 Oct 2023 03:26:47 +0800</pubDate><description><![CDATA[更新误差先验F通过3.42来算得到F其中, F中的名义状态的推进通过公式3.41得到,(名义状态不考虑误差, 这一点从3.41d, 3.41e可以看出, 误差状态只考虑误差, 真实状态为名义+误差)代码的实现333333333333Q的算法注意, 在离散情况下​ηv​ηa​Δtηθ​ηg​Δtηg​ηbg​Δtηa​ηba​Δt​可以根据3.40将3.42进行一阶泰勒展开代码中的实现。]]></description><category></category></item><item><title><![CDATA[SLAM 14 notes]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/133931569</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/133931569</guid><author>seamanj</author><pubDate>Thu, 19 Oct 2023 18:16:25 +0800</pubDate><description><![CDATA[4.23 推导fx在点a处的泰勒展开fx∑n0∞​n!fna​x−anlnx的n阶导数lnnxxn−1n−1n−1​lnR在I处展开lnR​n0∑∞​n!lnnIR−In​n1∑∞​n!lnnIR−In​n1∑∞​n−1n−1R−In​n0∑∞​n1−1nR−In1​​。]]></description><category></category></item><item><title><![CDATA[build g2o viewer on macos]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/133875348</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/133875348</guid><author>seamanj</author><pubDate>Tue, 17 Oct 2023 07:18:35 +0800</pubDate><description><![CDATA[【代码】build g2o viewer on macos。]]></description><category></category></item><item><title><![CDATA[use vscode mingw cmake on windows]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132795966</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132795966</guid><author>seamanj</author><pubDate>Sun, 10 Sep 2023 21:29:27 +0800</pubDate><description><![CDATA[对于opencv, 要么自己用Mingw编译, 要么下载现存的, 我这里下的现成的https://github.com/huihut/OpenCV-MinGW-Build。安好mingw, cmake。]]></description><category></category></item><item><title><![CDATA[set c++ 17 in vscode]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132784052</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132784052</guid><author>seamanj</author><pubDate>Sat, 09 Sep 2023 23:58:42 +0800</pubDate><description><![CDATA[【代码】set c++ 17 in vscode。]]></description><category></category></item><item><title><![CDATA[公式trick备忘录]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132767603</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132767603</guid><author>seamanj</author><pubDate>Fri, 08 Sep 2023 21:14:01 +0800</pubDate><description><![CDATA[相关， similarity learning, svm。]]></description><category></category></item><item><title><![CDATA[双系统备忘]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132697148</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132697148</guid><author>seamanj</author><pubDate>Tue, 05 Sep 2023 17:35:34 +0800</pubDate><description><![CDATA[装了双系统， 找不到ubuntu,只有windows。从windows启动cmd。]]></description><category></category></item><item><title><![CDATA[kalman filter]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132657245</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132657245</guid><author>seamanj</author><pubDate>Mon, 04 Sep 2023 01:23:00 +0800</pubDate><description><![CDATA[k时刻的位置和速度xk​pk​vk​​运动方程xk​Fk−1​xk−1​Gk−1​uk−1​wk−1​10​Δt1​xk−1​21​Δt2Δt​ak−1​wk−1​Fk​叫状态转移矩阵，Gk​叫控制输入矩阵, 噪声wk​∼N0Qk​测量方程zk​Hk​xk​vk​Hk​为状态观测矩阵。注意这里的vk​。]]></description><category></category></item><item><title><![CDATA[vscode debug with cmake on macos]]></title><link>https://blog.youkuaiyun.com/seamanj/article/details/132644497</link><guid>https://blog.youkuaiyun.com/seamanj/article/details/132644497</guid><author>seamanj</author><pubDate>Sun, 03 Sep 2023 00:22:20 +0800</pubDate><description><![CDATA[这句会通过cmake 来启动要调试的程序， 因为程序是通过CMAKE来build。]]></description><category></category></item></channel></rss>